June 2015 - lvm2-commits - Fedora Mailing-Lists

master - Add support for raid0/raid0_meta raid types

by Heinz Mauelshagen

Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=c2c0a029fe5fcb... Commit: c2c0a029fe5fcb8585039073ca49c023d237a300 Parent: fd29c7f3a171174dcd47eb8b23ff42a145cdacc6 Author: Heinz Mauelshagen <heinzm(a)redhat.com> AuthorDate: Tue Jun 9 19:56:02 2015 +0200 Committer: Heinz Mauelshagen <heinzm(a)redhat.com> CommitterDate: Tue Jun 9 19:56:02 2015 +0200 Add support for raid0/raid0_meta raid types Supports creation of raid types raid0 and raid0_meta with 'lvcreate --type (raid0|raid0_meta) ...' based on functionality available in dm-raid target version 1.0.7 The raid0 type provides access via the MD raid0 personality without metadata devices The raid0_meta type provides access via the MD raid0 personality _with_ metadata devices, i.e. it reserves space for rmeta devices which is e.g. useful for future functional enhancements supporting conversions between raid0 and raid4/5/6/10 to ensure metadata space on raid0_meta creation. Conversion between striped/raid0/raid0_meta LVs with striped LVs being restricted to one stripe zone (i.e. no varying stripes) is possible with 'lvconvert --type (striped|raid0|raid0_meta) ...' lvconvert-striped-raid0.sh provides various tests --- WHATS_NEW | 1 + daemons/lvmetad/Makefile.in | 3 +- daemons/lvmpolld/Makefile.in | 3 +- lib/activate/dev_manager.c | 14 +- lib/cache/lvmetad.c | 4 - lib/cache/lvmetad.h | 12 +- lib/config/defaults.h | 2 + lib/format_text/export.c | 6 +- lib/metadata/lv.c | 1 + lib/metadata/lv.h | 4 +- lib/metadata/lv_manip.c | 362 ++++++---- lib/metadata/merge.c | 2 +- lib/metadata/metadata-exported.h | 12 +- lib/metadata/raid_manip.c | 1483 +++++++++++++++++++++++++++++++------- lib/metadata/segtype.h | 133 +++- lib/raid/raid.c | 213 +++--- lib/uuid/uuid.c | 2 +- libdm/libdm-deptree.c | 70 ++- tools/lvchange.c | 2 +- tools/lvconvert.c | 60 +- tools/lvcreate.c | 75 ++- 21 files changed, 1843 insertions(+), 621 deletions(-) diff --git a/WHATS_NEW b/WHATS_NEW index bfcc094..db48233 100644 --- a/WHATS_NEW +++ b/WHATS_NEW @@ -8,6 +8,7 @@ Version 2.02.121 - Do not fail polling when poll LV not found (already finished or removed). Replace poll_get_copy_vg/lv fns with vg_read() and find_lv() in polldaemon. Close all device fds only in before sleep call in polldaemon. + Support for raid types raid0 and raid0_meta Version 2.02.120 - 15th May 2015 ================================ diff --git a/daemons/lvmetad/Makefile.in b/daemons/lvmetad/Makefile.in index 765128c..f9b997e 100644 --- a/daemons/lvmetad/Makefile.in +++ b/daemons/lvmetad/Makefile.in @@ -39,7 +39,8 @@ CFLAGS += $(EXTRA_EXEC_CFLAGS) lvmetad: $(OBJECTS) $(top_builddir)/libdaemon/client/libdaemonclient.a \ $(top_builddir)/libdaemon/server/libdaemonserver.a - $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) $(LVMLIBS) $(LIBS) + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) \ + $(DL_LIBS) $(LVMLIBS) $(LIBS) -rdynamic # TODO: No idea. No idea how to test either. #ifneq ("$(CFLOW_CMD)", "") diff --git a/daemons/lvmpolld/Makefile.in b/daemons/lvmpolld/Makefile.in index 8ebbb90..55f3dad 100644 --- a/daemons/lvmpolld/Makefile.in +++ b/daemons/lvmpolld/Makefile.in @@ -38,7 +38,8 @@ CFLAGS += $(DAEMON_CFLAGS) lvmpolld: $(OBJECTS) $(top_builddir)/libdaemon/client/libdaemonclient.a \ $(top_builddir)/libdaemon/server/libdaemonserver.a - $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) $(LVMLIBS) $(LIBS) + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) \ + $(DL_LIBS) $(LVMLIBS) $(LIBS) install_lvmpolld: lvmpolld $(INSTALL_PROGRAM) -D $< $(sbindir)/$(<F) diff --git a/lib/activate/dev_manager.c b/lib/activate/dev_manager.c index 1171f4c..38d76c4 100644 --- a/lib/activate/dev_manager.c +++ b/lib/activate/dev_manager.c @@ -2134,6 +2134,7 @@ static int _add_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, !_add_lv_to_dtree(dm, dtree, seg_lv(seg, s), 0)) return_0; if (seg_is_raid(seg) && + seg->meta_areas && seg_metalv(seg, s) && !_add_lv_to_dtree(dm, dtree, seg_metalv(seg, s), 0)) return_0; } @@ -2303,9 +2304,15 @@ int add_areas_line(struct dev_manager *dm, struct lv_segment *seg, return_0; continue; } - if (!(dlid = build_dm_uuid(dm->mem, seg_metalv(seg, s), NULL))) - return_0; - if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_metale(seg, s))) + + if (seg->meta_areas && seg_metalv(seg, s)) { + if (!(dlid = build_dm_uuid(dm->mem, seg_metalv(seg, s), NULL))) + return_0; + if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_metale(seg, s))) + return_0; + + /* One for metadata area */ + } else if (!dm_tree_node_add_null_area(node, 0)) return_0; if (!(dlid = build_dm_uuid(dm->mem, seg_lv(seg, s), NULL))) @@ -2632,6 +2639,7 @@ static int _add_segment_to_dtree(struct dev_manager *dm, laopts, NULL)) return_0; if (seg_is_raid(seg) && + seg->meta_areas && seg_metalv(seg, s) && !_add_new_lv_to_dtree(dm, dtree, seg_metalv(seg, s), laopts, NULL)) return_0; diff --git a/lib/cache/lvmetad.c b/lib/cache/lvmetad.c index dd1219b..73a382c 100644 --- a/lib/cache/lvmetad.c +++ b/lib/cache/lvmetad.c @@ -46,10 +46,6 @@ void lvmetad_init(struct cmd_context *cmd) if (!_lvmetad_use && !access(getenv("LVM_LVMETAD_PIDFILE") ? : LVMETAD_PIDFILE, F_OK)) log_warn("WARNING: lvmetad is running but disabled." " Restart lvmetad before enabling it!"); - - if (_lvmetad_connected) - log_debug(INTERNAL_ERROR "Refreshing lvmetad global handle while connection with the daemon is active"); - _lvmetad_cmd = cmd; } diff --git a/lib/cache/lvmetad.h b/lib/cache/lvmetad.h index 395bc41..6769f76 100644 --- a/lib/cache/lvmetad.h +++ b/lib/cache/lvmetad.h @@ -29,7 +29,8 @@ typedef int (*activation_handler) (struct cmd_context *cmd, #ifdef LVMETAD_SUPPORT /* - * Sets up a global handle for our process. + * Initialise the communication with lvmetad. Normally called by + * lvmcache_init. Sets up a global handle for our process. */ void lvmetad_init(struct cmd_context *); @@ -58,9 +59,7 @@ int lvmetad_socket_present(void); /* * Check whether lvmetad is active (where active means both that it is running - * and that we have a working connection with it). It opens new connection - * with lvmetad in the process when lvmetad is supposed to be used and the - * connection is not open yet. + * and that we have a working connection with it). */ int lvmetad_active(void); @@ -71,9 +70,8 @@ int lvmetad_active(void); void lvmetad_connect_or_warn(void); /* - * Drop connection to lvmetad. A subsequent lvmetad_connect_or_warn or - * lvmetad_active will re-establish the connection (possibly at a - * different socket path). + * Drop connection to lvmetad. A subsequent lvmetad_init() will re-establish + * the connection (possibly at a different socket path). */ void lvmetad_disconnect(void); diff --git a/lib/config/defaults.h b/lib/config/defaults.h index 6793d01..3b6a877 100644 --- a/lib/config/defaults.h +++ b/lib/config/defaults.h @@ -60,7 +60,9 @@ #define DEFAULT_MIRROR_LOG_FAULT_POLICY "allocate" #define DEFAULT_MIRROR_IMAGE_FAULT_POLICY "remove" #define DEFAULT_MIRROR_MAX_IMAGES 8 /* limited by kernel DM_KCOPYD_MAX_REGIONS */ +#define DEFAULT_RAID_MAX_IMAGES 64 /* limited by kernel failed devices bitfield in superblock (raid4/5/6 max 253) */ #define DEFAULT_RAID_FAULT_POLICY "warn" +#define DEFAULT_RAID_STRIPE_SIZE (64 * 2) #define DEFAULT_DMEVENTD_RAID_LIB "libdevmapper-event-lvm2raid.so" #define DEFAULT_DMEVENTD_MIRROR_LIB "libdevmapper-event-lvm2mirror.so" diff --git a/lib/format_text/export.c b/lib/format_text/export.c index 018772e..b340fc8 100644 --- a/lib/format_text/export.c +++ b/lib/format_text/export.c @@ -590,14 +590,14 @@ int out_areas(struct formatter *f, const struct lv_segment *seg, /* RAID devices are laid-out in metadata/data pairs */ if (!lv_is_raid_image(seg_lv(seg, s)) || - !lv_is_raid_metadata(seg_metalv(seg, s))) { + (seg->meta_areas && seg_metalv(seg, s) && !lv_is_raid_metadata(seg_metalv(seg, s)))) { log_error("RAID segment has non-RAID areas"); return 0; } outf(f, "\"%s\", \"%s\"%s", - seg_metalv(seg, s)->name, seg_lv(seg, s)->name, - (s == seg->area_count - 1) ? "" : ","); + (seg->meta_areas && seg_metalv(seg, s)) ? seg_metalv(seg, s)->name : "-", + seg_lv(seg, s)->name, (s == seg->area_count - 1) ? "" : ","); break; case AREA_UNASSIGNED: diff --git a/lib/metadata/lv.c b/lib/metadata/lv.c index 10ce906..5329b91 100644 --- a/lib/metadata/lv.c +++ b/lib/metadata/lv.c @@ -533,6 +533,7 @@ int lv_raid_image_in_sync(const struct logical_volume *lv) if ((seg = first_seg(lv))) raid_seg = get_only_segment_using_this_lv(seg->lv); + if (!raid_seg) { log_error("Failed to find RAID segment for %s", lv->name); return 0; diff --git a/lib/metadata/lv.h b/lib/metadata/lv.h index 4475085..3031196 100644 --- a/lib/metadata/lv.h +++ b/lib/metadata/lv.h @@ -35,8 +35,8 @@ struct logical_volume { int32_t major; int32_t minor; - uint64_t size; /* Sectors */ - uint32_t le_count; + uint64_t size; /* Sectors visible */ + uint32_t le_count; /* Logical extents visible */ uint32_t origin_count; uint32_t external_count; diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c index 1251a5d..729ec78 100644 --- a/lib/metadata/lv_manip.c +++ b/lib/metadata/lv_manip.c @@ -38,9 +38,6 @@ typedef enum { NEXT_AREA } area_use_t; -/* FIXME: remove RAID_METADATA_AREA_LEN macro after defining 'raid_log_extents'*/ -#define RAID_METADATA_AREA_LEN 1 - /* FIXME These ended up getting used differently from first intended. Refactor. */ /* Only one of A_CONTIGUOUS_TO_LVSEG, A_CLING_TO_LVSEG, A_CLING_TO_ALLOCED may be set */ #define A_CONTIGUOUS_TO_LVSEG 0x01 /* Must be contiguous to an existing segment */ @@ -115,6 +112,8 @@ enum { LV_TYPE_DATA, LV_TYPE_SPARE, LV_TYPE_VIRTUAL, + LV_TYPE_RAID0, + LV_TYPE_RAID0_META, LV_TYPE_RAID1, LV_TYPE_RAID10, LV_TYPE_RAID4, @@ -159,6 +158,8 @@ static const char *_lv_type_names[] = { [LV_TYPE_DATA] = "data", [LV_TYPE_SPARE] = "spare", [LV_TYPE_VIRTUAL] = "virtual", + [LV_TYPE_RAID0] = SEG_TYPE_NAME_RAID0, + [LV_TYPE_RAID0_META] = SEG_TYPE_NAME_RAID0_META, [LV_TYPE_RAID1] = SEG_TYPE_NAME_RAID1, [LV_TYPE_RAID10] = SEG_TYPE_NAME_RAID10, [LV_TYPE_RAID4] = SEG_TYPE_NAME_RAID4, @@ -776,7 +777,7 @@ int get_default_region_size(struct cmd_context *cmd) if (region_size & (region_size - 1)) { region_size = _round_down_pow2(region_size); - log_verbose("Reducing mirror region size to %u kiB (power of 2).", + log_verbose("Reducing region size to %u kiB (power of 2).", region_size / 2); } @@ -923,10 +924,13 @@ dm_percent_t copy_percent(const struct logical_volume *lv) uint32_t numerator = 0u, denominator = 0u; struct lv_segment *seg; + if (seg_is_any_raid0(first_seg(lv))) + return DM_PERCENT_INVALID; + dm_list_iterate_items(seg, &lv->segments) { denominator += seg->area_len; - /* FIXME Generalise name of 'extents_copied' field */ + /* FIXME Generalise name of 'extents_copied' field */ if ((seg_is_raid(seg) || seg_is_mirrored(seg)) && (seg->area_count > 1)) numerator += seg->extents_copied; @@ -934,7 +938,7 @@ dm_percent_t copy_percent(const struct logical_volume *lv) numerator += seg->area_len; } - return denominator ? dm_make_percent( numerator, denominator ) : 100.0; + return denominator ? dm_make_percent(numerator, denominator ) : 100.0; } /* @@ -971,6 +975,7 @@ struct lv_segment *alloc_lv_segment(const struct segment_type *segtype, } if (segtype_is_raid(segtype) && + !segtype_is_raid0(segtype) && !(seg->meta_areas = dm_pool_zalloc(mem, areas_sz))) { dm_pool_free(mem, seg); /* frees everything alloced since seg */ return_NULL; @@ -1003,6 +1008,24 @@ struct lv_segment *alloc_lv_segment(const struct segment_type *segtype, return seg; } +/* Round up @extents to next stripe boundary for number of @stripes */ +static uint32_t _round_to_stripe_boundary(struct logical_volume *lv, uint32_t extents, uint32_t stripes, int extend) +{ + uint32_t rest; + + if (!stripes) + return extents; + + /* Round up extents to stripe divisable amount */ + if ((rest = extents % stripes)) { + extents += extend ? stripes - rest : -rest; + log_print_unless_silent("Rounding up size to full stripe size %s", + display_size(lv->vg->cmd, extents * lv->vg->extent_size)); + } + + return extents; +} + struct lv_segment *alloc_snapshot_seg(struct logical_volume *lv, uint64_t status, uint32_t old_le_count) { @@ -1033,6 +1056,7 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t uint32_t area_reduction, int with_discard) { struct lv_segment *cache_seg; + struct logical_volume *lv = seg_lv(seg, s); if (seg_type(seg, s) == AREA_UNASSIGNED) return 1; @@ -1050,10 +1074,10 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t return 1; } - if (lv_is_mirror_image(seg_lv(seg, s)) || - lv_is_thin_pool_data(seg_lv(seg, s)) || - lv_is_cache_pool_data(seg_lv(seg, s))) { - if (!lv_reduce(seg_lv(seg, s), area_reduction)) + if (lv_is_mirror_image(lv) || + lv_is_thin_pool_data(lv) || + lv_is_cache_pool_data(lv)) { + if (!lv_reduce(lv, area_reduction)) return_0; /* FIXME: any upper level reporting */ return 1; } @@ -1067,33 +1091,28 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t return_0; } - if (lv_is_raid_image(seg_lv(seg, s))) { - /* - * FIXME: Use lv_reduce not lv_remove - * We use lv_remove for now, because I haven't figured out - * why lv_reduce won't remove the LV. - lv_reduce(seg_lv(seg, s), area_reduction); - */ - if (area_reduction != seg->area_len) { - log_error("Unable to reduce RAID LV - operation not implemented."); - return_0; - } else { - if (!lv_remove(seg_lv(seg, s))) { - log_error("Failed to remove RAID image %s", - seg_lv(seg, s)->name); - return 0; - } - } + if (lv_is_raid_image(lv)) { + if (seg->meta_areas) { + uint32_t meta_area_reduction; + struct logical_volume *mlv; + struct volume_group *vg = lv->vg; - /* Remove metadata area if image has been removed */ - if (area_reduction == seg->area_len) { - if (!lv_reduce(seg_metalv(seg, s), - seg_metalv(seg, s)->le_count)) { - log_error("Failed to remove RAID meta-device %s", - seg_metalv(seg, s)->name); + if (!(mlv = seg_metalv(seg, s))) return 0; - } + + meta_area_reduction = raid_rmeta_extents_delta(vg->cmd, lv->le_count, lv->le_count - area_reduction, + seg->region_size, vg->extent_size); + if (lv->le_count - area_reduction == 0) + meta_area_reduction = mlv->le_count; + + if (meta_area_reduction && + !lv_reduce(mlv, meta_area_reduction)) + return_0; /* FIXME: any upper level reporting */ } + + if (!lv_reduce(lv, area_reduction)) + return_0; /* FIXME: any upper level reporting */ + return 1; } @@ -1101,9 +1120,9 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t log_very_verbose("Remove %s:%" PRIu32 "[%" PRIu32 "] from " "the top of LV %s:%" PRIu32, seg->lv->name, seg->le, s, - seg_lv(seg, s)->name, seg_le(seg, s)); + lv->name, seg_le(seg, s)); - if (!remove_seg_from_segs_using_this_lv(seg_lv(seg, s), seg)) + if (!remove_seg_from_segs_using_this_lv(lv, seg)) return_0; seg_lv(seg, s) = NULL; seg_le(seg, s) = 0; @@ -1239,6 +1258,36 @@ static int _lv_segment_add_areas(struct logical_volume *lv, return 1; } +/* Return @area_len for @extents based on @seg's properties (e.g. striped, ...) */ +static uint32_t _area_len(struct lv_segment *seg, uint32_t extents, uint32_t *area_len) +{ + /* Caller must ensure exact divisibility */ + if (seg_is_striped(seg) || seg_is_striped_raid(seg)) { + uint32_t data_devs = seg->area_count - seg->segtype->parity_devs; + + if (seg_is_raid10(seg) && + data_devs > 1) { + if (data_devs % 2) { + log_error("raid10 data devices not divisible by 2"); + return 0; + } + + data_devs /= 2; + } + + if (extents % data_devs) { + /* HM FIXME: message not right for raid10 */ + log_error("Extents %" PRIu32 " not divisible by #stripes %" PRIu32, extents, data_devs); + return 0; + } + + *area_len = extents / data_devs; + } else + *area_len = extents; + + return 1; +} + /* * Reduce the size of an lv_segment. New size can be zero. */ @@ -1246,24 +1295,16 @@ static int _lv_segment_reduce(struct lv_segment *seg, uint32_t reduction) { uint32_t area_reduction, s; - /* Caller must ensure exact divisibility */ - if (seg_is_striped(seg)) { - if (reduction % seg->area_count) { - log_error("Segment extent reduction %" PRIu32 - " not divisible by #stripes %" PRIu32, - reduction, seg->area_count); - return 0; - } - area_reduction = (reduction / seg->area_count); - } else - area_reduction = reduction; + if (!_area_len(seg, reduction, &area_reduction)) + return 0; for (s = 0; s < seg->area_count; s++) if (!release_and_discard_lv_segment_area(seg, s, area_reduction)) return_0; - seg->len -= reduction; - seg->area_len -= area_reduction; + seg->len -= reduction; + seg->lv->size -= reduction * seg->lv->vg->extent_size; + seg->area_len -= seg_is_striped(seg) ? area_reduction : reduction; return 1; } @@ -1271,19 +1312,27 @@ static int _lv_segment_reduce(struct lv_segment *seg, uint32_t reduction) /* * Entry point for all LV reductions in size. */ +static uint32_t _calc_area_multiple(const struct segment_type *segtype, + const uint32_t area_count, + const uint32_t stripes); static int _lv_reduce(struct logical_volume *lv, uint32_t extents, int delete) { - struct lv_segment *seg; - uint32_t count = extents; + struct lv_segment *seg = first_seg(lv); + uint32_t count; uint32_t reduction; struct logical_volume *pool_lv; + if (seg_is_striped(seg) || seg_is_striped_raid(seg)) + extents = _round_to_stripe_boundary(lv, extents, _calc_area_multiple(seg->segtype, seg->area_count, 0), 0); + if (lv_is_merging_origin(lv)) { log_debug_metadata("Dropping snapshot merge of %s to removed origin %s.", find_snapshot(lv)->lv->name, lv->name); clear_snapshot_merge(lv); } + count = extents; + dm_list_iterate_back_items(seg, &lv->segments) { if (!count) break; @@ -1385,7 +1434,7 @@ int replace_lv_with_error_segment(struct logical_volume *lv) * that suggest it is anything other than "error". */ /* FIXME Check for other flags that need removing */ - lv->status &= ~(MIRROR|MIRRORED|PVMOVE|LOCKED); + lv->status &= ~(MIRROR|MIRRORED|RAID|RAID_IMAGE|RAID_META|PVMOVE|LOCKED); /* FIXME Check for any attached LVs that will become orphans e.g. mirror logs */ @@ -1434,11 +1483,12 @@ struct alloc_handle { struct dm_pool *mem; alloc_policy_t alloc; /* Overall policy */ - int approx_alloc; /* get as much as possible up to new_extents */ + int approx_alloc; /* get as much as possible up to new_extents */ uint32_t new_extents; /* Number of new extents required */ uint32_t area_count; /* Number of parallel areas */ - uint32_t parity_count; /* Adds to area_count, but not area_multiple */ + uint32_t parity_count; /* Adds to area_count, but not area_multiple */ uint32_t area_multiple; /* seg->len = area_len * area_multiple */ + uint32_t area_multiple_check; /* Check area_multiple in _allocate(); needed for striped image additions */ uint32_t log_area_count; /* Number of parallel logs */ uint32_t metadata_area_count; /* Number of parallel metadata areas */ uint32_t log_len; /* Length of log/metadata_area */ @@ -1483,29 +1533,28 @@ static uint32_t _calc_area_multiple(const struct segment_type *segtype, if (segtype_is_striped(segtype)) return area_count; - /* Parity RAID (e.g. RAID 4/5/6) */ - if (segtype_is_raid(segtype) && segtype->parity_devs) { + /* + * RAID10 - only has 2-way mirror right now. + * If we are to move beyond 2-way RAID10, then + * the 'stripes' argument will always need to + * be given. + */ + if (segtype_is_raid10(segtype)) + return stripes ?: area_count / 2; + + /* RAID0 and parity RAID (e.g. RAID 4/5/6) */ + if (segtype_is_striped_raid(segtype)) { /* * As articulated in _alloc_init, we can tell by * the area_count whether a replacement drive is * being allocated; and if this is the case, then * there is no area_multiple that should be used. */ + if (area_count <= segtype->parity_devs) return 1; - return area_count - segtype->parity_devs; - } - /* - * RAID10 - only has 2-way mirror right now. - * If we are to move beyond 2-way RAID10, then - * the 'stripes' argument will always need to - * be given. - */ - if (!strcmp(segtype->name, _lv_type_names[LV_TYPE_RAID10])) { - if (!stripes) - return area_count / 2; - return stripes; + return area_count - segtype->parity_devs; } /* Mirrored stripes */ @@ -1557,7 +1606,7 @@ static int _sufficient_pes_free(struct alloc_handle *ah, struct dm_list *pvms, { uint32_t area_extents_needed = (extents_still_needed - allocated) * ah->area_count / ah->area_multiple; uint32_t parity_extents_needed = (extents_still_needed - allocated) * ah->parity_count / ah->area_multiple; - uint32_t metadata_extents_needed = (ah->alloc_and_split_meta) ? 0 : ah->metadata_area_count * RAID_METADATA_AREA_LEN; /* One each */ + uint32_t metadata_extents_needed =ah->metadata_area_count * ah->log_len; uint32_t total_extents_needed = area_extents_needed + parity_extents_needed + metadata_extents_needed; uint32_t free_pes = pv_maps_size(pvms); @@ -1700,9 +1749,9 @@ static int _setup_alloced_segment(struct logical_volume *lv, uint64_t status, struct lv_segment *seg; area_multiple = _calc_area_multiple(segtype, area_count, 0); + extents = aa[0].len * area_multiple; - if (!(seg = alloc_lv_segment(segtype, lv, lv->le_count, - aa[0].len * area_multiple, + if (!(seg = alloc_lv_segment(segtype, lv, lv->le_count, extents, status, stripe_size, NULL, area_count, aa[0].len, 0u, region_size, 0u, NULL))) { @@ -1718,7 +1767,7 @@ static int _setup_alloced_segment(struct logical_volume *lv, uint64_t status, extents = aa[0].len * area_multiple; lv->le_count += extents; - lv->size += (uint64_t) extents *lv->vg->extent_size; + lv->size += (uint64_t) extents * lv->vg->extent_size; return 1; } @@ -1884,7 +1933,7 @@ static int _for_each_pv(struct cmd_context *cmd, struct logical_volume *lv, *max_seg_len = remaining_seg_len; area_multiple = _calc_area_multiple(seg->segtype, seg->area_count, 0); - area_len = remaining_seg_len / area_multiple ? : 1; + area_len = remaining_seg_len / (area_multiple ?: 1); /* For striped mirrors, all the areas are counted, through the mirror layer */ if (top_level_area_index == -1) @@ -2921,9 +2970,10 @@ static int _allocate(struct alloc_handle *ah, return 1; } - if (ah->area_multiple > 1 && + if (ah->area_multiple_check && + ah->area_multiple > 1 && (ah->new_extents - alloc_state.allocated) % ah->area_multiple) { - log_error("Number of extents requested (%d) needs to be divisible by %d.", + log_error("Number of extents requested (%u) needs to be divisible by %d.", ah->new_extents - alloc_state.allocated, ah->area_multiple); return 0; @@ -3075,6 +3125,7 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, struct dm_pool *mem, const struct segment_type *segtype, alloc_policy_t alloc, int approx_alloc, + int extend, uint32_t existing_extents, uint32_t new_extents, uint32_t mirrors, @@ -3102,10 +3153,9 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, size = sizeof(*ah); /* - * It is a requirement that RAID 4/5/6 are created with a number of - * stripes that is greater than the number of parity devices. (e.g - * RAID4/5 must have at least 2 stripes and RAID6 must have at least - * 3.) It is also a constraint that, when replacing individual devices + * It is a requirement that RAID 4/5/6 have to have at least 2 stripes. + * + * It is also a constraint that, when replacing individual devices * in a RAID 4/5/6 array, no more devices can be replaced than * there are parity devices. (Otherwise, there would not be enough * redundancy to maintain the array.) Understanding these two @@ -3116,12 +3166,18 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, * account for the extra parity devices because the array already * exists and they only want replacement drives. */ - parity_count = (area_count <= segtype->parity_devs) ? 0 : segtype->parity_devs; + + parity_count = extend ? segtype->parity_devs : 0; alloc_count = area_count + parity_count; - if (segtype_is_raid(segtype) && metadata_area_count) + if (segtype_is_raid(segtype) && metadata_area_count) { + if (metadata_area_count != alloc_count) { + log_error(INTERNAL_ERROR "Bad metadata_area_count"); + return 0; + } + /* RAID has a meta area for each device */ alloc_count *= 2; - else + } else /* mirrors specify their exact log count */ alloc_count += metadata_area_count; @@ -3159,30 +3215,29 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, * is calculated from. So, we must pass in the total count to get * a correct area_multiple. */ - ah->area_multiple = _calc_area_multiple(segtype, area_count + parity_count, stripes); + ah->area_multiple = _calc_area_multiple(segtype, area_count + segtype->parity_devs, stripes); + + ah->area_multiple_check = extend ? 1 : 0; + //FIXME: s/mirror_logs_separate/metadata_separate/ so it can be used by others? ah->mirror_logs_separate = find_config_tree_bool(cmd, allocation_mirror_logs_require_separate_pvs_CFG, NULL); - if (mirrors || stripes) - total_extents = new_extents; - else - total_extents = 0; + total_extents = new_extents; if (segtype_is_raid(segtype)) { if (metadata_area_count) { - if (metadata_area_count != area_count) - log_error(INTERNAL_ERROR - "Bad metadata_area_count"); - ah->metadata_area_count = area_count; - ah->alloc_and_split_meta = 1; - - ah->log_len = RAID_METADATA_AREA_LEN; - + ah->log_len = raid_rmeta_extents_delta(cmd, + existing_extents / ah->area_multiple, + (existing_extents + new_extents) / ah->area_multiple, + region_size, extent_size); + ah->metadata_area_count = metadata_area_count; + ah->alloc_and_split_meta = !!ah->log_len; /* * We need 'log_len' extents for each * RAID device's metadata_area */ - total_extents += (ah->log_len * ah->area_multiple); + total_extents += ah->log_len * (ah->area_multiple > 1 ? + area_count / (segtype_is_raid10(segtype) ? mirrors : 1) : 1); } else { ah->log_area_count = 0; ah->log_len = 0; @@ -3261,6 +3316,7 @@ struct alloc_handle *allocate_extents(struct volume_group *vg, alloc_policy_t alloc, int approx_alloc, struct dm_list *parallel_areas) { + int extend = lv ? 1 : 0; struct alloc_handle *ah; if (segtype_is_virtual(segtype)) { @@ -3286,7 +3342,7 @@ struct alloc_handle *allocate_extents(struct volume_group *vg, if (alloc >= ALLOC_INHERIT) alloc = vg->alloc; - if (!(ah = _alloc_init(vg->cmd, vg->vgmem, segtype, alloc, approx_alloc, + if (!(ah = _alloc_init(vg->cmd, vg->vgmem, segtype, alloc, approx_alloc, extend, lv ? lv->le_count : 0, extents, mirrors, stripes, log_count, vg->extent_size, region_size, parallel_areas))) @@ -3704,7 +3760,7 @@ static int _lv_insert_empty_sublvs(struct logical_volume *lv, return_0; /* Metadata LVs for raid */ - if (segtype_is_raid(segtype)) { + if (segtype_is_raid(segtype) && !segtype_is_raid0(segtype)) { if (dm_snprintf(img_name, len, "%s_rmeta_%u", lv->name, i) < 0) return_0; } else @@ -3732,23 +3788,23 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, { const struct segment_type *segtype; struct logical_volume *sub_lv, *meta_lv; - struct lv_segment *seg; + struct lv_segment *seg = first_seg(lv); uint32_t fa, s; - int clear_metadata = 0; + int clear_metadata = lv->le_count ? 0 : 1; - segtype = get_segtype_from_string(lv->vg->cmd, "striped"); + if (!(segtype = get_segtype_from_string(lv->vg->cmd, "striped"))) + return_0; /* * The component devices of a "striped" LV all go in the same * LV. However, RAID has an LV for each device - making the * 'stripes' and 'stripe_size' parameters meaningless. */ - if (seg_is_raid(first_seg(lv))) { + if (seg_is_raid(seg)) { stripes = 1; stripe_size = 0; } - seg = first_seg(lv); for (fa = first_area, s = 0; s < seg->area_count; s++) { if (is_temporary_mirror_layer(seg_lv(seg, s))) { if (!_lv_extend_layered_lv(ah, seg_lv(seg, s), extents, @@ -3767,13 +3823,10 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, } /* Extend metadata LVs only on initial creation */ - if (seg_is_raid(seg) && !lv->le_count) { - if (!seg->meta_areas) { - log_error("No meta_areas for RAID type"); - return 0; - } - - meta_lv = seg_metalv(seg, s); + if (seg_is_raid(seg) && + seg->meta_areas && + ah->log_len && + (meta_lv = seg_metalv(seg, s))) { if (!lv_add_segment(ah, fa + seg->area_count, 1, meta_lv, segtype, 0, meta_lv->status, 0)) { @@ -3781,14 +3834,16 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, meta_lv->name, lv->name); return 0; } - lv_set_visible(meta_lv); - clear_metadata = 1; + + if (clear_metadata) + lv_set_visible(meta_lv); } fa += stripes; } - if (clear_metadata) { + if (clear_metadata && + seg->meta_areas) { /* * We must clear the metadata areas upon creation. */ @@ -3833,20 +3888,33 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, } } + seg = first_seg(lv); seg->area_len += extents; seg->len += extents; lv->le_count += extents; lv->size += (uint64_t) extents * lv->vg->extent_size; + if (!vg_write(lv->vg) || !vg_commit(lv->vg)) + return_0; + + /* * The MD bitmap is limited to being able to track 2^21 regions. * The region_size must be adjusted to meet that criteria. */ - while (seg_is_raid(seg) && (seg->region_size < (lv->size / (1 << 21)))) { - seg->region_size *= 2; - log_very_verbose("Adjusting RAID region_size from %uS to %uS" - " to support large LV size", - seg->region_size/2, seg->region_size); + if (seg_is_striped_raid(seg) && !seg_is_any_raid0(seg)) { + int adjusted = 0; + + /* HM FIXME: make it larger than just to suit the LV size */ + while (seg->region_size < (lv->size / (1 << 21))) { + seg->region_size *= 2; + adjusted = 1; + } + + if (adjusted) + log_very_verbose("Adjusting RAID region_size from %uS to %uS" + " to support large LV size", + seg->region_size/2, seg->region_size); } return 1; @@ -3874,7 +3942,6 @@ int lv_extend(struct logical_volume *lv, struct alloc_handle *ah; uint32_t sub_lv_count; uint32_t old_extents; - uint32_t new_extents; /* Total logical size after extension. */ log_very_verbose("Adding segment of type %s to LV %s.", segtype->name, lv->name); @@ -3887,19 +3954,24 @@ int lv_extend(struct logical_volume *lv, */ /* FIXME Support striped metadata pool */ log_count = 1; - } else if (segtype_is_raid(segtype) && !lv->le_count) - log_count = mirrors * stripes; + } else if (segtype_is_striped(segtype) || segtype_is_striped_raid(segtype)) { + extents = _round_to_stripe_boundary(lv, extents, stripes, 1); + + /* Make sure metadata LVs are being extended as well */ + if (!segtype_is_striped(segtype) && !segtype_is_raid0(segtype)) + log_count = (mirrors ?: 1) * stripes + segtype->parity_devs; + + } + /* FIXME log_count should be 1 for mirrors */ + if (segtype_is_mirror(segtype)) + log_count = 1; if (!(ah = allocate_extents(lv->vg, lv, segtype, stripes, mirrors, log_count, region_size, extents, allocatable_pvs, alloc, approx_alloc, NULL))) return_0; - new_extents = ah->new_extents; - if (segtype_is_raid(segtype)) - new_extents -= ah->log_len * ah->area_multiple; - if (segtype_is_pool(segtype)) { if (!(r = create_pool(lv, segtype, ah, stripes, stripe_size))) stack; @@ -3928,7 +4000,7 @@ int lv_extend(struct logical_volume *lv, goto out; } - if (!(r = _lv_extend_layered_lv(ah, lv, new_extents - lv->le_count, 0, + if (!(r = _lv_extend_layered_lv(ah, lv, extents, 0, stripes, stripe_size))) goto_out; @@ -4116,7 +4188,7 @@ static int _for_each_sub_lv(struct logical_volume *lv, int skip_pools, return_0; } - if (!seg_is_raid(seg)) + if (!seg_is_raid(seg) || !seg->meta_areas) continue; /* RAID has meta_areas */ @@ -4781,7 +4853,10 @@ static int _lvresize_adjust_extents(struct cmd_context *cmd, struct logical_volu return 0; } - if (!strcmp(mirr_seg->segtype->name, _lv_type_names[LV_TYPE_RAID10])) { + if (!strcmp(mirr_seg->segtype->name, _lv_type_names[LV_TYPE_RAID0])) { + lp->stripes = mirr_seg->area_count; + lp->stripe_size = mirr_seg->stripe_size; + } else if (!strcmp(mirr_seg->segtype->name, _lv_type_names[LV_TYPE_RAID10])) { /* FIXME Warn if command line values are being overridden? */ lp->stripes = mirr_seg->area_count / seg_mirrors; lp->stripe_size = mirr_seg->stripe_size; @@ -4791,9 +4866,10 @@ static int _lvresize_adjust_extents(struct cmd_context *cmd, struct logical_volu /* FIXME We will need to support resize for metadata LV as well, * and data LV could be any type (i.e. mirror)) */ dm_list_iterate_items(seg, seg_mirrors ? &seg_lv(mirr_seg, 0)->segments : &lv->segments) { - /* Allow through "striped" and RAID 4/5/6/10 */ + /* Allow through "striped" and RAID 0/4/5/6/10 */ if (!seg_is_striped(seg) && (!seg_is_raid(seg) || seg_is_mirrored(seg)) && + strcmp(seg->segtype->name, _lv_type_names[LV_TYPE_RAID0]) && strcmp(seg->segtype->name, _lv_type_names[LV_TYPE_RAID10])) continue; @@ -5122,7 +5198,7 @@ static struct logical_volume *_lvresize_volume(struct cmd_context *cmd, log_error("Filesystem check failed."); return NULL; } - /* some filesystems supports online resize */ + /* some filesystems support online resize */ } /* FIXME forks here */ @@ -5497,8 +5573,8 @@ struct dm_list *build_parallel_areas_from_lv(struct logical_volume *lv, return_NULL; current_le = spvs->le + spvs->len; - raid_multiple = (seg->segtype->parity_devs) ? - seg->area_count - seg->segtype->parity_devs : 1; + raid_multiple = (seg_is_mirror(seg) || seg_is_raid1(seg)) ? 1 : + seg->area_count - seg->segtype->parity_devs; } while ((current_le * raid_multiple) < lv->le_count); if (create_single_list) { @@ -7034,14 +7110,16 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, return NULL; } - /* FIXME This will not pass cluster lock! */ - init_mirror_in_sync(lp->nosync); + if (!seg_is_any_raid0(lp)) { + /* FIXME: this will not pass cluster lock! */ + init_mirror_in_sync(lp->nosync); - if (lp->nosync) { - log_warn("WARNING: New %s won't be synchronised. " - "Don't read what you didn't write!", - lp->segtype->name); - status |= LV_NOTSYNCED; + if (lp->nosync) { + log_warn("WARNING: New %s won't be synchronised. " + "Don't read what you didn't write!", + lp->segtype->name); + status |= LV_NOTSYNCED; + } } lp->region_size = adjusted_mirror_region_size(vg->extent_size, @@ -7208,8 +7286,10 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, goto revert_new_lv; } } else if (seg_is_raid(lp)) { - first_seg(lv)->min_recovery_rate = lp->min_recovery_rate; - first_seg(lv)->max_recovery_rate = lp->max_recovery_rate; + if (!seg_is_any_raid0(first_seg(lv))) { + first_seg(lv)->min_recovery_rate = lp->min_recovery_rate; + first_seg(lv)->max_recovery_rate = lp->max_recovery_rate; + } } else if (seg_is_thin_pool(lp)) { first_seg(lv)->chunk_size = lp->chunk_size; first_seg(lv)->zero_new_blocks = lp->zero ? 1 : 0; diff --git a/lib/metadata/merge.c b/lib/metadata/merge.c index 7fd5a07..2b1c42d 100644 --- a/lib/metadata/merge.c +++ b/lib/metadata/merge.c @@ -412,7 +412,7 @@ int check_lv_segments(struct logical_volume *lv, int complete_vg) continue; if (lv == seg_lv(seg, s)) seg_found++; - if (seg_is_raid(seg) && (lv == seg_metalv(seg, s))) + if (seg_is_raid(seg) && seg->meta_areas && (lv == seg_metalv(seg, s))) seg_found++; } if (seg_is_replicator_dev(seg)) { diff --git a/lib/metadata/metadata-exported.h b/lib/metadata/metadata-exported.h index 0e52153..9ed411a 100644 --- a/lib/metadata/metadata-exported.h +++ b/lib/metadata/metadata-exported.h @@ -1109,6 +1109,9 @@ struct logical_volume *first_replicator_dev(const struct logical_volume *lv); /* -- metadata/replicator_manip.c */ /* ++ metadata/raid_manip.c */ +uint32_t raid_rmeta_extents_delta(struct cmd_context *cmd, + uint32_t rimage_extents_cur, uint32_t rimage_extents_new, + uint32_t region_size, uint32_t extent_size); int lv_is_raid_with_tracking(const struct logical_volume *lv); uint32_t lv_raid_image_count(const struct logical_volume *lv); int lv_raid_change_image_count(struct logical_volume *lv, @@ -1118,8 +1121,13 @@ int lv_raid_split(struct logical_volume *lv, const char *split_name, int lv_raid_split_and_track(struct logical_volume *lv, struct dm_list *splittable_pvs); int lv_raid_merge(struct logical_volume *lv); -int lv_raid_reshape(struct logical_volume *lv, - const struct segment_type *new_segtype); +int lv_raid_convert(struct logical_volume *lv, + const struct segment_type *new_segtype, + int yes, int force, + const unsigned image_count, + const unsigned stripes, + const unsigned new_stripe_size, + struct dm_list *allocate_pvs); int lv_raid_replace(struct logical_volume *lv, struct dm_list *remove_pvs, struct dm_list *allocate_pvs); int lv_raid_remove_missing(struct logical_volume *lv); diff --git a/lib/metadata/raid_manip.c b/lib/metadata/raid_manip.c index 64cfb3f..aa3e250 100644 --- a/lib/metadata/raid_manip.c +++ b/lib/metadata/raid_manip.c @@ -22,6 +22,14 @@ #include "lv_alloc.h" #include "lvm-string.h" +#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*a)) + +/* Return data images count for @total_rimages depending on @seg's type */ +static uint32_t _data_rimages_count(const struct lv_segment *seg, const uint32_t total_rimages) +{ + return total_rimages - seg->segtype->parity_devs; +} + static int _lv_is_raid_with_tracking(const struct logical_volume *lv, struct logical_volume **tracking) { @@ -75,6 +83,26 @@ static int _activate_sublv_preserving_excl(struct logical_volume *top_lv, } /* + * Deactivate and remove the LVs on @removal_lvs list from @vg + * + * Returns 1 on success or 0 on failure + */ +static int _deactivate_and_remove_lvs(struct volume_group *vg, struct dm_list *removal_lvs) +{ + struct lv_list *lvl; + + dm_list_iterate_items(lvl, removal_lvs) { + if (!deactivate_lv(vg->cmd, lvl->lv)) + return_0; + + if (!lv_remove(lvl->lv)) + return_0; + } + + return 1; +} + +/* * _raid_in_sync * @lv * @@ -87,6 +115,10 @@ static int _activate_sublv_preserving_excl(struct logical_volume *top_lv, static int _raid_in_sync(struct logical_volume *lv) { dm_percent_t sync_percent; + struct lv_segment *seg = first_seg(lv); + + if (seg_is_striped(seg) || seg_is_any_raid0(seg)) + return 1; if (!lv_raid_percent(lv, &sync_percent)) { log_error("Unable to determine sync status of %s/%s.", @@ -249,6 +281,24 @@ static int _clear_lvs(struct dm_list *lv_list) return 1; } +/* HM + * + * Check for maximum supported raid devices imposed by the kernel MD + * maximum device limits _and_ dm-raid superblock bitfield constraints + * + * Returns 1 on success or 0 on failure + */ +static int _check_max_raid_devices(uint32_t image_count) +{ + if (image_count > DEFAULT_RAID_MAX_IMAGES) { + log_error("Unable to handle arrays with more than %u devices", + DEFAULT_RAID_MAX_IMAGES); + return 0; + } + + return 1; +} + /* * _shift_and_rename_image_components * @seg: Top-level RAID segment @@ -361,277 +411,565 @@ static char *_generate_raid_name(struct logical_volume *lv, return name; } + /* - * Create an LV of specified type. Set visible after creation. - * This function does not make metadata changes. + * Eliminate the extracted LVs on @removal_lvs from @vg incl. vg write, commit and backup */ -static struct logical_volume *_alloc_image_component(struct logical_volume *lv, - const char *alt_base_name, - struct alloc_handle *ah, uint32_t first_area, - uint64_t type) +static int _eliminate_extracted_lvs(struct volume_group *vg, struct dm_list *removal_lvs) { - uint64_t status; - char img_name[NAME_LEN]; - const char *type_suffix; - struct logical_volume *tmp_lv; - const struct segment_type *segtype; + if (!removal_lvs || dm_list_empty(removal_lvs)) + return 1; - if (!ah) { - log_error(INTERNAL_ERROR - "Stand-alone %s area allocation not implemented", - (type == RAID_META) ? "metadata" : "data"); - return 0; - } + sync_local_dev_names(vg->cmd); - switch (type) { - case RAID_META: - type_suffix = "rmeta"; - break; - case RAID_IMAGE: - type_suffix = "rimage"; - break; - default: - log_error(INTERNAL_ERROR - "Bad type provided to _alloc_raid_component."); + if (!_deactivate_and_remove_lvs(vg, removal_lvs)) return 0; - } - if (dm_snprintf(img_name, sizeof(img_name), "%s_%s_%%d", - (alt_base_name) ? : lv->name, type_suffix) < 0) + if (!vg_write(vg) || !vg_commit(vg)) return_0; - status = LVM_READ | LVM_WRITE | LV_REBUILD | type; - if (!(tmp_lv = lv_create_empty(img_name, NULL, status, ALLOC_INHERIT, lv->vg))) { - log_error("Failed to allocate new raid component, %s.", img_name); - return 0; + if (!backup(vg)) + log_error("Backup of VG %s failed after removal of image component LVs", vg->name); + + return 1; +} + +/* + * _extract_image_component + * @seg + * @idx: The index in the areas array to remove + * @data: != 0 to extract data dev / 0 extract metadata_dev + * @extracted_lv: The displaced metadata/data LV + */ +static int _extract_image_component(struct lv_segment *seg, + uint64_t type, uint32_t idx, + struct logical_volume **extracted_lv) +{ + struct logical_volume *lv; + + switch (type) { + case RAID_META: + lv = seg_metalv(seg, idx); + seg_metalv(seg, idx) = NULL; + seg_metatype(seg, idx) = AREA_UNASSIGNED; + break; + case RAID_IMAGE: + lv = seg_lv(seg, idx); + seg_lv(seg, idx) = NULL; + seg_type(seg, idx) = AREA_UNASSIGNED; + break; + default: + log_error(INTERNAL_ERROR "Bad type provided to %s.", __func__); + return 0; } - if (!(segtype = get_segtype_from_string(lv->vg->cmd, "striped"))) + if (!lv) + return 0; + + log_very_verbose("Extracting image component %s from %s", lv->name, lvseg_name(seg)); + lv->status &= ~(type | RAID); + lv_set_visible(lv); + + /* release lv areas */ + if (!remove_seg_from_segs_using_this_lv(lv, seg)) return_0; - if (!lv_add_segment(ah, first_area, 1, tmp_lv, segtype, 0, status, 0)) { - log_error("Failed to add segment to LV, %s", img_name); - return 0; - } + if (!(lv->name = _generate_raid_name(lv, "extracted", -1))) + return_0; - lv_set_visible(tmp_lv); + if (!replace_lv_with_error_segment(lv)) + return_0; - return tmp_lv; + *extracted_lv = lv; + + return 1; } -static int _alloc_image_components(struct logical_volume *lv, - struct dm_list *pvs, uint32_t count, - struct dm_list *new_meta_lvs, - struct dm_list *new_data_lvs) +/* Remove sublvs fo @type from @lv starting at @idx and put them on @removal_lvs */ +static int _extract_image_component_list(struct lv_segment *seg, + uint64_t type, uint32_t idx, + struct dm_list *removal_lvs) { uint32_t s; - uint32_t region_size; - uint32_t extents; - struct lv_segment *seg = first_seg(lv); - const struct segment_type *segtype; - struct alloc_handle *ah; - struct dm_list *parallel_areas; + unsigned i; struct lv_list *lvl_array; - if (!(lvl_array = dm_pool_alloc(lv->vg->vgmem, - sizeof(*lvl_array) * count * 2))) - return_0; + if (idx >= seg->area_count) { + log_error(INTERNAL_ERROR "area index too large for segment"); + return 0; + } - if (!(parallel_areas = build_parallel_areas_from_lv(lv, 0, 1))) + if (!(lvl_array = dm_pool_alloc(seg_lv(seg, 0)->vg->vgmem, sizeof(*lvl_array) * (seg->area_count - idx)))) return_0; - if (seg_is_linear(seg)) - region_size = get_default_region_size(lv->vg->cmd); + for (i = 0, s = idx; s < seg->area_count; s++) { + if (!_extract_image_component(seg, type, s, &lvl_array[i].lv)) + return 0; + + dm_list_add(removal_lvs, &lvl_array[i].list); + i++; + } + + if (type == RAID_IMAGE) + seg->areas = NULL; else - region_size = seg->region_size; + seg->meta_areas = NULL; - if (seg_is_raid(seg)) - segtype = seg->segtype; - else if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_RAID1))) - return_0; + return 1; +} - /* - * The number of extents is based on the RAID type. For RAID1, - * each of the rimages is the same size - 'le_count'. However - * for RAID 4/5/6, the stripes add together (NOT including the parity - * devices) to equal 'le_count'. Thus, when we are allocating - * individual devies, we must specify how large the individual device - * is along with the number we want ('count'). - */ - extents = (segtype->parity_devs) ? - (lv->le_count / (seg->area_count - segtype->parity_devs)) : - lv->le_count; +/* Add new @lvs to @lv at @area_offset */ +static int _add_image_component_list(struct lv_segment *seg, int delete_from_list, + uint64_t lv_flags, struct dm_list *lvs, uint32_t area_offset) +{ + uint32_t s = area_offset; + struct lv_list *lvl, *tmp; - if (!(ah = allocate_extents(lv->vg, NULL, segtype, 0, count, count, - region_size, extents, pvs, - lv->alloc, 0, parallel_areas))) - return_0; + dm_list_iterate_items_safe(lvl, tmp, lvs) { + if (delete_from_list) + dm_list_del(&lvl->list); - for (s = 0; s < count; ++s) { - /* - * The allocation areas are grouped together. First - * come the rimage allocated areas, then come the metadata - * allocated areas. Thus, the metadata areas are pulled - * from 's + count'. - */ - if (!(lvl_array[s + count].lv = - _alloc_image_component(lv, NULL, ah, s + count, RAID_META))) { - alloc_destroy(ah); - return_0; - } - dm_list_add(new_meta_lvs, &(lvl_array[s + count].list)); + if (lv_flags & VISIBLE_LV) + lv_set_visible(lvl->lv); + else + lv_set_hidden(lvl->lv); - if (!(lvl_array[s].lv = - _alloc_image_component(lv, NULL, ah, s, RAID_IMAGE))) { - alloc_destroy(ah); - return_0; + if (lv_flags & LV_REBUILD) + lvl->lv->status |= LV_REBUILD; + else + lvl->lv->status &= ~LV_REBUILD; + + if (!set_lv_segment_area_lv(seg, s++, lvl->lv, 0 /* le */, + lvl->lv->status)) { + log_error("Failed to add sublv %s", lvl->lv->name); + return 0; } - dm_list_add(new_data_lvs, &(lvl_array[s].list)); } - alloc_destroy(ah); - return 1; } +/* Calculate absolute amount of metadata device extens based on @rimage_extents, @region_size and @extens_size */ +static uint32_t _raid_rmeta_extents(struct cmd_context *cmd, + uint32_t rimage_extents, uint32_t region_size, uint32_t extent_size) +{ + uint64_t bytes, regions, sectors; + + region_size = region_size ?: get_default_region_size(cmd); + regions = rimage_extents * extent_size / region_size; + + /* raid and bitmap superblocks + region bytes */ + bytes = 2 * 4096 + dm_div_up(regions, 8); + sectors = dm_div_up(bytes, 512); + + return dm_div_up(sectors, extent_size); +} + +/* + * Returns raid metadata device size _change_ in extents, algorithm from dm-raid ("raid" target) kernel code. + */ +uint32_t raid_rmeta_extents_delta(struct cmd_context *cmd, + uint32_t rimage_extents_cur, uint32_t rimage_extents_new, + uint32_t region_size, uint32_t extent_size) +{ + uint32_t rmeta_extents_cur = _raid_rmeta_extents(cmd, rimage_extents_cur, region_size, extent_size); + uint32_t rmeta_extents_new = _raid_rmeta_extents(cmd, rimage_extents_new, region_size, extent_size); + + /* Need minimum size on LV creation */ + if (!rimage_extents_cur) + return rmeta_extents_new; + + /* Need current size on LV deletion */ + if (!rimage_extents_new) + return rmeta_extents_cur; + + if (rmeta_extents_new == rmeta_extents_cur) + return 0; + + /* Extending/reducing... */ + return rmeta_extents_new > rmeta_extents_cur ? + rmeta_extents_new - rmeta_extents_cur : + rmeta_extents_cur - rmeta_extents_new; +} + + /* * _alloc_rmeta_for_lv * @lv * - * Allocate a RAID metadata device for the given LV (which is or will + * Allocate RAID metadata device for the given LV (which is or will * be the associated RAID data device). The new metadata device must * be allocated from the same PV(s) as the data device. */ +static struct logical_volume *_alloc_image_component(struct logical_volume *lv, + const char *alt_base_name, + struct alloc_handle *ah, uint32_t first_area, + uint64_t type); static int _alloc_rmeta_for_lv(struct logical_volume *data_lv, struct logical_volume **meta_lv) { + int r = 1; + char *p; struct dm_list allocatable_pvs; struct alloc_handle *ah; struct lv_segment *seg = first_seg(data_lv); - char *p, base_name[NAME_LEN]; dm_list_init(&allocatable_pvs); if (!seg_is_linear(seg)) { log_error(INTERNAL_ERROR "Unable to allocate RAID metadata " - "area for non-linear LV, %s", data_lv->name); + "area for non-linear LV, %s", data_lv->name); return 0; } - (void) dm_strncpy(base_name, data_lv->name, sizeof(base_name)); - if ((p = strstr(base_name, "_mimage_"))) + if ((p = strstr(data_lv->name, "_mimage_")) || + (p = strstr(data_lv->name, "_rimage_"))) *p = '\0'; if (!get_pv_list_for_lv(data_lv->vg->cmd->mem, data_lv, &allocatable_pvs)) { - log_error("Failed to build list of PVs for %s/%s", - data_lv->vg->name, data_lv->name); + log_error("Failed to build list of PVs for %s", display_lvname(data_lv)); return 0; } - if (!(ah = allocate_extents(data_lv->vg, NULL, seg->segtype, 0, 1, 0, - seg->region_size, - 1 /*RAID_METADATA_AREA_LEN*/, - &allocatable_pvs, data_lv->alloc, 0, NULL))) + if (!(ah = allocate_extents(data_lv->vg, NULL, seg->segtype, + 0, 1, 0, + seg->region_size, + _raid_rmeta_extents(data_lv->vg->cmd, data_lv->le_count, + seg->region_size, data_lv->vg->extent_size), + &allocatable_pvs, data_lv->alloc, 0, NULL))) return_0; - if (!(*meta_lv = _alloc_image_component(data_lv, base_name, ah, 0, RAID_META))) { - alloc_destroy(ah); - return_0; - } + if (!(*meta_lv = _alloc_image_component(data_lv, data_lv->name, ah, 0, RAID_META))) + r = 0; + + if (p) + *p = '_'; alloc_destroy(ah); + return r; +} + +/* + * Allocate metadata devs for all @new_data_devs and link them to list @new_meta_lvs + */ +static int _alloc_rmeta_devs_for_rimage_devs(struct logical_volume *lv, + struct dm_list *new_data_lvs, + struct dm_list *new_meta_lvs) +{ + uint32_t a = 0, raid_devs = 0; + struct dm_list *l; + struct lv_list *lvl, *lvl_array; + + dm_list_iterate(l, new_data_lvs) + raid_devs++; + + if (!raid_devs) + return 0; + + if (!(lvl_array = dm_pool_zalloc(lv->vg->vgmem, raid_devs * sizeof(*lvl_array)))) + return 0; + + dm_list_iterate_items(lvl, new_data_lvs) { + log_debug_metadata("Allocating new metadata LV for %s", + lvl->lv->name); + if (!_alloc_rmeta_for_lv(lvl->lv, &lvl_array[a].lv)) { + log_error("Failed to allocate metadata LV for %s in %s", + lvl->lv->name, lv->vg->name); + return 0; + } + + dm_list_add(new_meta_lvs, &lvl_array[a].list); + a++; + } + return 1; } -static int _raid_add_images(struct logical_volume *lv, - uint32_t new_count, struct dm_list *pvs) +/* + * Allocate metadata devs for all data devs of an LV + */ +static int _alloc_rmeta_devs_for_lv(struct logical_volume *lv, struct dm_list *meta_lvs) { - int rebuild_flag_cleared = 0; uint32_t s; - uint32_t old_count = lv_raid_image_count(lv); - uint32_t count = new_count - old_count; - uint64_t status_mask = -1; + struct lv_list *lvl_array; + struct dm_list data_lvs; struct lv_segment *seg = first_seg(lv); - struct dm_list meta_lvs, data_lvs; - struct lv_list *lvl; - struct lv_segment_area *new_areas; - if (lv->status & LV_NOTSYNCED) { - log_error("Can't add image to out-of-sync RAID LV:" - " use 'lvchange --resync' first."); + dm_list_init(&data_lvs); + + if (seg->meta_areas) { + log_error(INTERNAL_ERROR "Metadata LVs exists in %s", display_lvname(lv)); return 0; } - if (!_raid_in_sync(lv)) { - log_error("Can't add image to RAID LV that" - " is still initializing."); + if (!(seg->meta_areas = dm_pool_zalloc(lv->vg->vgmem, + seg->area_count * sizeof(*seg->meta_areas)))) return 0; - } - if (!archive(lv->vg)) + if (!(lvl_array = dm_pool_alloc(lv->vg->vgmem, seg->area_count * sizeof(*lvl_array)))) return_0; - dm_list_init(&meta_lvs); /* For image addition */ - dm_list_init(&data_lvs); /* For image addition */ + for (s = 0; s < seg->area_count; s++) { + lvl_array[s].lv = seg_lv(seg, s); + dm_list_add(&data_lvs, &lvl_array[s].list); + } - /* - * If the segtype is linear, then we must allocate a metadata - * LV to accompany it. - */ - if (seg_is_linear(seg)) { - /* A complete resync will be done, no need to mark each sub-lv */ - status_mask = ~(LV_REBUILD); + if (!_alloc_rmeta_devs_for_rimage_devs(lv, &data_lvs, meta_lvs)) { + log_error("Failed to allocate metadata LVs for %s", lv->name); + return 0; + } - if (!(lvl = dm_pool_alloc(lv->vg->vgmem, sizeof(*lvl)))) { - log_error("Memory allocation failed"); - return 0; - } + return 1; +} - if (!_alloc_rmeta_for_lv(lv, &lvl->lv)) - return_0; +/* + * Create an LV of specified type. Set visible after creation. + * This function does not make metadata changes. + */ +static struct logical_volume *_alloc_image_component(struct logical_volume *lv, const char *alt_base_name, + struct alloc_handle *ah, uint32_t first_area, + uint64_t type) +{ + uint64_t status = RAID | LVM_READ | LVM_WRITE | type; + char img_name[NAME_LEN]; + const char *type_suffix; + struct logical_volume *tmp_lv; + const struct segment_type *segtype; - dm_list_add(&meta_lvs, &lvl->list); - } else if (!seg_is_raid(seg)) { - log_error("Unable to add RAID images to %s of segment type %s", - lv->name, lvseg_name(seg)); - return 0; + switch (type) { + case RAID_META: + type_suffix = "rmeta"; + break; + case RAID_IMAGE: + type_suffix = "rimage"; + status |= LV_REBUILD; + break; + default: + log_error(INTERNAL_ERROR "Bad type provided to %s.", __func__); + return 0; } - if (!_alloc_image_components(lv, pvs, count, &meta_lvs, &data_lvs)) + if (dm_snprintf(img_name, sizeof(img_name), "%s_%s_%%d", + alt_base_name ?: lv->name, type_suffix) < 0) return_0; - /* - * If linear, we must correct data LV names. They are off-by-one - * because the linear volume hasn't taken its proper name of "_rimage_0" - * yet. This action must be done before '_clear_lvs' because it - * commits the LVM metadata before clearing the LVs. - */ - if (seg_is_linear(seg)) { - struct dm_list *l; - struct lv_list *lvl_tmp; - dm_list_iterate(l, &data_lvs) { - if (l == dm_list_last(&data_lvs)) { - lvl = dm_list_item(l, struct lv_list); - if (!(lvl->lv->name = _generate_raid_name(lv, "rimage", count))) - return_0; - continue; - } - lvl = dm_list_item(l, struct lv_list); - lvl_tmp = dm_list_item(l->n, struct lv_list); - lvl->lv->name = lvl_tmp->lv->name; - } + if (!(tmp_lv = lv_create_empty(img_name, NULL, status, ALLOC_INHERIT, lv->vg))) { + log_error("Failed to allocate new raid component, %s.", img_name); + return 0; } - /* Metadata LVs must be cleared before being added to the array */ - if (!_clear_lvs(&meta_lvs)) - goto fail; + /* If no allocation requested, leave it to the empty LV (needed for striped -> raid0 takeover) */ + if (ah) { + if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; - if (seg_is_linear(seg)) { - first_seg(lv)->status |= RAID_IMAGE; - if (!insert_layer_for_lv(lv->vg->cmd, lv, + if (!lv_add_segment(ah, first_area, 1, tmp_lv, segtype, 0, status, 0)) { + log_error("Failed to add segment to LV, %s", img_name); + return 0; + } + + first_seg(tmp_lv)->status |= SEG_RAID; + } + + lv_set_visible(tmp_lv); + + return tmp_lv; +} + +/* + * Create @count new image component pairs for @lv and return them in + * @new_meta_lvs and @new_data_lvs allocating space if @allocate is set. + * + * Use @pvs list for allocation if set, else just create empty image LVs. + */ +static int _alloc_image_components(struct logical_volume *lv, + struct dm_list *pvs, uint32_t count, + struct dm_list *meta_lvs, + struct dm_list *data_lvs) +{ + int r = 0; + uint32_t s, extents; + struct lv_segment *seg = first_seg(lv); + const struct segment_type *segtype; + struct alloc_handle *ah; + struct dm_list *parallel_areas; + struct lv_list *lvl_array; + + if (!meta_lvs && !data_lvs) + return 0; + + if (!(lvl_array = dm_pool_alloc(lv->vg->vgmem, 2 * count * sizeof(*lvl_array)))) + return_0; + + /* If this is an image addition to an existing raid set, use its type... */ + if (seg_is_raid(seg)) + segtype = seg->segtype; + + /* .. if not, set it to raid1 */ + else if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_RAID1))) + return_0; + + /* + * The number of extents is based on the RAID type. For RAID1/10, + * each of the rimages is the same size - 'le_count'. However + * for RAID 0/4/5/6, the stripes add together (NOT including the parity + * devices) to equal 'le_count'. Thus, when we are allocating + * individual devices, we must specify how large the individual device + * is along with the number we want ('count'). + */ + if (pvs) { + uint32_t stripes, mirrors, metadata_area_count = count; + + if (!(parallel_areas = build_parallel_areas_from_lv(lv, 0, 1))) + return_0; + + + /* Amount of extents for the rimage device(s) */ + if (segtype_is_striped_raid(seg->segtype)) { + stripes = count; + mirrors = 1; + extents = count * (lv->le_count / _data_rimages_count(seg, seg->area_count)); + + } else { + stripes = 1; + mirrors = count; + extents = lv->le_count; + } + + if (!(ah = allocate_extents(lv->vg, NULL, segtype, + stripes, mirrors, metadata_area_count, + seg->region_size, extents, + pvs, lv->alloc, 0, parallel_areas))) + return_0; + + } else + ah = NULL; + + for (s = 0; s < count; s++) { + /* + * The allocation areas are grouped together. First + * come the rimage allocated areas, then come the metadata + * allocated areas. Thus, the metadata areas are pulled + * from 's + count'. + */ + + /* + * If the segtype is raid0, we may avoid allocating metadata LVs + * to accompany the data LVs by not passing in @meta_lvs + */ + if (meta_lvs) { + if (!(lvl_array[s + count].lv = _alloc_image_component(lv, NULL, ah, s + count, RAID_META))) + goto_bad; + + dm_list_add(meta_lvs, &(lvl_array[s + count].list)); + } + + if (data_lvs) { + if (!(lvl_array[s].lv = _alloc_image_component(lv, NULL, ah, s, RAID_IMAGE))) + goto_bad; + + dm_list_add(data_lvs, &(lvl_array[s].list)); + } + } + + r = 1; +bad: + if (ah) + alloc_destroy(ah); + + return r; +} + +static int _raid_add_images(struct logical_volume *lv, + uint32_t new_count, struct dm_list *pvs) +{ + int rebuild_flag_cleared = 0; + uint32_t s; + uint32_t old_count = lv_raid_image_count(lv); + uint32_t count = new_count - old_count; + uint64_t status_mask = -1; + struct lv_segment *seg = first_seg(lv); + struct dm_list meta_lvs, data_lvs; + struct lv_list *lvl; + struct lv_segment_area *new_areas; + + if (lv->status & LV_NOTSYNCED) { + log_error("Can't add image to out-of-sync RAID LV:" + " use 'lvchange --resync' first."); + return 0; + } + + if (!_raid_in_sync(lv)) { + log_error("Can't add image to RAID LV that" + " is still initializing."); + return 0; + } + + if (!archive(lv->vg)) + return_0; + + dm_list_init(&meta_lvs); /* For image addition */ + dm_list_init(&data_lvs); /* For image addition */ + + /* + * If the segtype is linear, then we must allocate a metadata + * LV to accompany it. + */ + if (seg_is_linear(seg)) { + /* A complete resync will be done, no need to mark each sub-lv */ + status_mask = ~(LV_REBUILD); + + if (!(lvl = dm_pool_alloc(lv->vg->vgmem, sizeof(*lvl)))) { + log_error("Memory allocation failed"); + return 0; + } + + if (!_alloc_rmeta_for_lv(lv, &lvl->lv)) + return_0; + + dm_list_add(&meta_lvs, &lvl->list); + } else if (!seg_is_raid(seg)) { + log_error("Unable to add RAID images to %s of segment type %s", + lv->name, lvseg_name(seg)); + return 0; + } + + if (!_alloc_image_components(lv, pvs, count, &meta_lvs, &data_lvs)) + return_0; + + /* + * If linear, we must correct data LV names. They are off-by-one + * because the linear volume hasn't taken its proper name of "_rimage_0" + * yet. This action must be done before '_clear_lvs' because it + * commits the LVM metadata before clearing the LVs. + */ + if (seg_is_linear(seg)) { + struct dm_list *l; + struct lv_list *lvl_tmp; + + dm_list_iterate(l, &data_lvs) { + if (l == dm_list_last(&data_lvs)) { + lvl = dm_list_item(l, struct lv_list); + if (!(lvl->lv->name = _generate_raid_name(lv, "rimage", count))) + return_0; + continue; + } + lvl = dm_list_item(l, struct lv_list); + lvl_tmp = dm_list_item(l->n, struct lv_list); + lvl->lv->name = lvl_tmp->lv->name; + } + } + + /* Metadata LVs must be cleared before being added to the array */ + if (!_clear_lvs(&meta_lvs)) + goto fail; + + if (seg_is_linear(seg)) { + first_seg(lv)->status |= RAID_IMAGE; + if (!insert_layer_for_lv(lv->vg->cmd, lv, RAID | LVM_READ | LVM_WRITE, "_rimage_0")) return_0; @@ -1069,6 +1407,41 @@ int lv_raid_change_image_count(struct logical_volume *lv, return _raid_add_images(lv, new_count, pvs); } +/* + * Add/remove metadata areas to/from raid0 + * + * Update metadata and reload mappings if @update_and_reload + */ +static int _alloc_and_add_rmeta_devs_for_lv(struct logical_volume *lv) +{ + struct lv_segment *seg = first_seg(lv); + struct dm_list meta_lvs; + + dm_list_init(&meta_lvs); + + log_debug_metadata("Allocating metadata LVs for %s", display_lvname(lv)); + if (!_alloc_rmeta_devs_for_lv(lv, &meta_lvs)) { + log_error("Failed to allocate metadata LVs for %s", display_lvname(lv)); + return_0; + } + + /* Metadata LVs must be cleared before being added to the array */ + log_debug_metadata("Clearing newly allocated metadata LVs for %s", display_lvname(lv)); + if (!_clear_lvs(&meta_lvs)) { + log_error("Failed to initialize metadata LVs for %s", display_lvname(lv)); + return_0; + } + + /* Set segment areas for metadata sub_lvs */ + log_debug_metadata("Adding newly allocated metadata LVs to %s", display_lvname(lv)); + if (!_add_image_component_list(seg, 1, 0, &meta_lvs, 0)) { + log_error("Failed to add newly allocated metadata LVs to %s", display_lvname(lv)); + return_0; + } + + return 1; +} + int lv_raid_split(struct logical_volume *lv, const char *split_name, uint32_t new_count, struct dm_list *splittable_pvs) { @@ -1342,50 +1715,61 @@ int lv_raid_merge(struct logical_volume *image_lv) return 1; } -static int _convert_mirror_to_raid1(struct logical_volume *lv, - const struct segment_type *new_segtype) +/* + * Rename all data sub LVs of @lv to mirror + * or raid name depending on @direction + */ +enum mirror_raid_conv { mirror_to_raid1 = 0, raid1_to_mirror }; +static int _rename_data_lvs(struct logical_volume *lv, enum mirror_raid_conv direction) { uint32_t s; + char *p; struct lv_segment *seg = first_seg(lv); - struct lv_list lvl_array[seg->area_count], *lvl; - struct dm_list meta_lvs; - struct lv_segment_area *meta_areas; - char *new_name; + static struct { + char type_char; + uint64_t set_flag; + uint64_t reset_flag; + } conv[] = { + { 'r', RAID_IMAGE , MIRROR_IMAGE }, + { 'm', MIRROR_IMAGE, RAID_IMAGE } + }; - dm_list_init(&meta_lvs); + for (s = 0; s < seg->area_count; ++s) { + struct logical_volume *dlv = seg_lv(seg, s); - if (!_raid_in_sync(lv)) { - log_error("Unable to convert %s/%s while it is not in-sync", - lv->vg->name, lv->name); - return 0; - } + if (!((p = strstr(dlv->name, "_mimage_")) || + (p = strstr(dlv->name, "_rimage_")))) { + log_error(INTERNAL_ERROR "name lags image part"); + return 0; + } - if (!(meta_areas = dm_pool_zalloc(lv->vg->vgmem, - lv_mirror_count(lv) * sizeof(*meta_areas)))) { - log_error("Failed to allocate meta areas memory."); - return 0; + *(p+1) = conv[direction].type_char; + log_debug_metadata("data lv renamed to %s", dlv->name); + + dlv->status &= ~conv[direction].reset_flag; + dlv->status |= conv[direction].set_flag; } - if (!archive(lv->vg)) - return_0; + return 1; +} - for (s = 0; s < seg->area_count; s++) { - log_debug_metadata("Allocating new metadata LV for %s", - seg_lv(seg, s)->name); - if (!_alloc_rmeta_for_lv(seg_lv(seg, s), &(lvl_array[s].lv))) { - log_error("Failed to allocate metadata LV for %s in %s", - seg_lv(seg, s)->name, lv->name); - return 0; - } - dm_list_add(&meta_lvs, &(lvl_array[s].list)); - } +/* + * Convert @lv with "mirror" mapping to "raid1". + * + * Returns: 1 on success, 0 on failure + */ +static int _convert_mirror_to_raid1(struct logical_volume *lv, + const struct segment_type *new_segtype, + int update_and_reload) +{ + struct lv_segment *seg = first_seg(lv); - log_debug_metadata("Clearing newly allocated metadata LVs"); - if (!_clear_lvs(&meta_lvs)) { - log_error("Failed to initialize metadata LVs"); + if (!seg_is_mirrored(seg)) { + log_error(INTERNAL_ERROR "mirror conversion supported only"); return 0; } + /* Remove any mirror log */ if (seg->log_lv) { log_debug_metadata("Removing mirror log, %s", seg->log_lv->name); if (!remove_mirror_log(lv->vg->cmd, lv, NULL, 0)) { @@ -1394,85 +1778,674 @@ static int _convert_mirror_to_raid1(struct logical_volume *lv, } } - seg->meta_areas = meta_areas; - s = 0; + /* Allocate metadata devs for all mimage ones (writes+commits metadata) */ + if (!_alloc_and_add_rmeta_devs_for_lv(lv)) + return 0; - dm_list_iterate_items(lvl, &meta_lvs) { - log_debug_metadata("Adding %s to %s", lvl->lv->name, lv->name); + /* Rename all data sub lvs for "*_rimage_*" to "*_mimage_*" */ + if (!_rename_data_lvs(lv, mirror_to_raid1)) + return 0; - /* Images are known to be in-sync */ - lvl->lv->status &= ~LV_REBUILD; - first_seg(lvl->lv)->status &= ~LV_REBUILD; - lv_set_hidden(lvl->lv); + init_mirror_in_sync(1); - if (!set_lv_segment_area_lv(seg, s, lvl->lv, 0, - lvl->lv->status)) { - log_error("Failed to add %s to %s", - lvl->lv->name, lv->name); + log_debug_metadata("Setting new segtype and status of %s", display_lvname(lv)); + seg->segtype = new_segtype; + lv->status &= ~(MIRROR | MIRRORED); + lv->status |= RAID; + seg->status |= RAID; + + return update_and_reload ? lv_update_and_reload(lv) : 1; +} + +/* Begin: striped -> raid0 conversion */ +/* + * + * Helper: add/remove metadata areas to/from raid0 + * + * Update metadata and reload mappings if @update_and_reload + */ +static int _raid0_add_or_remove_metadata_lvs(struct logical_volume *lv, + int update_and_reload, + struct dm_list *removal_lvs) +{ + const char *raid_type; + struct lv_segment *seg = first_seg(lv); + + if (seg->meta_areas) { + log_debug_metadata("Extracting metadata LVs"); + if (!removal_lvs) { + log_error(INTERNAL_ERROR "Called with NULL removal LVs list"); return 0; } - s++; + + if (!_extract_image_component_list(seg, RAID_META, 0, removal_lvs)) { + log_error(INTERNAL_ERROR "Failed to extract metadata LVs"); + return 0; + } + + seg->meta_areas = NULL; + raid_type = SEG_TYPE_NAME_RAID0; + + } else { + if (!_alloc_and_add_rmeta_devs_for_lv(lv)) + return 0; + + raid_type = SEG_TYPE_NAME_RAID0_META; } - for (s = 0; s < seg->area_count; ++s) { - if (!(new_name = _generate_raid_name(lv, "rimage", s))) + if (!(seg->segtype = get_segtype_from_string(lv->vg->cmd, raid_type))) + return_0; + + if (update_and_reload) { + if (!lv_update_and_reload_origin(lv)) return_0; - log_debug_metadata("Renaming %s to %s", seg_lv(seg, s)->name, new_name); - seg_lv(seg, s)->name = new_name; - seg_lv(seg, s)->status &= ~MIRROR_IMAGE; - seg_lv(seg, s)->status |= RAID_IMAGE; + + /* If any residual LVs, eliminate them, write VG, commit it and take a backup */ + return _eliminate_extracted_lvs(lv->vg, removal_lvs); } - init_mirror_in_sync(1); - log_debug_metadata("Setting new segtype for %s", lv->name); - seg->segtype = new_segtype; - lv->status &= ~MIRROR; - lv->status &= ~MIRRORED; + return 1; +} + +/* + * Helper convert striped to raid0 + * + * For @lv, empty hidden LVs in @data_lvs have been created by the caller. + * + * All areas from @lv segments are being moved to new + * segments allocated with area_count=1 for @data_lvs. + * + * Returns: 1 on success, 0 on failure + */ +static int _striped_to_raid0_move_segs_to_raid0_lvs(struct logical_volume *lv, + struct dm_list *data_lvs) +{ + uint32_t s = 0, le; + struct logical_volume *dlv; + struct lv_segment *seg_from, *seg_new; + struct lv_list *lvl; + struct segment_type *segtype; + + if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + dm_list_iterate_items(lvl, data_lvs) { + dlv = lvl->lv; + le = 0; + dm_list_iterate_items(seg_from, &lv->segments) { + uint64_t status = RAID | SEG_RAID | (seg_from->status & (LVM_READ | LVM_WRITE)); + + /* Allocate a segment with one area for each segment in the striped LV */ + if (!(seg_new = alloc_lv_segment(segtype, dlv, + le, seg_from->area_len, + status, + seg_from->stripe_size, NULL, 1 /* area_count */, + seg_from->area_len, seg_from->chunk_size, + 0 /* region_size */, 0, NULL))) + return_0; + + seg_type(seg_new, 0) = AREA_UNASSIGNED; + dm_list_add(&dlv->segments, &seg_new->list); + le += seg_from->area_len; + + /* Move the respective area across to our new segment */ + if (!move_lv_segment_area(seg_new, 0, seg_from, s)) + return_0; + } + + /* Adjust le count and lv size */ + dlv->le_count = le; + dlv->size = (uint64_t) le * lv->vg->extent_size; + s++; + } + + /* Remove the empty segments from the striped LV */ + dm_list_init(&lv->segments); + + return 1; +} + +/* HM Helper: check that @lv has one stripe one, i.e. same stripe count in all of its segements */ +static int _lv_has_one_stripe_zone(struct logical_volume *lv) +{ + struct lv_segment *seg; + unsigned area_count = first_seg(lv)->area_count; + + dm_list_iterate_items(seg, &lv->segments) + if (seg->area_count != area_count) + return 0; + + return 1; +} + +/* + * Helper: convert striped to raid0 + * + * Inserts hidden LVs for all segments and the parallel areas in @lv and moves + * given segments and areas across. + * + * Optionally allocates metadata devs if @alloc_metadata_devs + * Optionally updates metadata and reloads mappings if @update_and_reload + * + * Returns: 1 on success, 0 on failure + */ +static struct lv_segment *_convert_striped_to_raid0(struct logical_volume *lv, + int alloc_metadata_devs, + int update_and_reload) +{ + struct lv_segment *seg = first_seg(lv), *raid0_seg; + unsigned area_count = seg->area_count; + struct segment_type *segtype; + struct dm_list data_lvs; + + if (!seg_is_striped(seg)) { + log_error(INTERNAL_ERROR "Cannot convert non-%s LV %s to %s", + SEG_TYPE_NAME_STRIPED, display_lvname(lv), SEG_TYPE_NAME_RAID0); + return NULL; + } + + /* Check for not (yet) supported varying area_count on multi-segment striped LVs */ + if (!_lv_has_one_stripe_zone(lv)) { + log_error("Cannot convert striped LV %s with varying stripe count to raid0", + display_lvname(lv)); + return NULL; + } + + if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_RAID0))) + return_NULL; + + /* Allocate empty rimage components */ + dm_list_init(&data_lvs); + if (!_alloc_image_components(lv, NULL, area_count, NULL, &data_lvs)) { + log_error("Failed to allocate empty image components for raid0 LV %s.", + display_lvname(lv)); + return_NULL; + } + + /* Move the AREA_PV areas across to the new rimage components; empties lv->segments */ + if (!_striped_to_raid0_move_segs_to_raid0_lvs(lv, &data_lvs)) { + log_error("Failed to insert linear LVs underneath %s.", display_lvname(lv)); + return_NULL; + } + + /* + * Allocate single segment to hold the image component + * areas based on the first data LVs properties derived + * from the first new raid0 LVs first segment + */ + seg = first_seg(dm_list_item(dm_list_first(&data_lvs), struct lv_list)->lv); + if (!(raid0_seg = alloc_lv_segment(segtype, lv, + 0 /* le */, lv->le_count /* len */, + seg->status, + seg->stripe_size, NULL /* log_lv */, + area_count, lv->le_count, seg->chunk_size, + 0 /* seg->region_size */, 0u /* extents_copied */ , + NULL /* pvmove_source_seg */))) { + log_error("Failed to allocate new raid0 segement for LV %s.", display_lvname(lv)); + return_NULL; + } + + /* Add new single raid0 segment to emptied LV segments list */ + dm_list_add(&lv->segments, &raid0_seg->list); + + /* Add data lvs to the top-level lvs segment; resets LV_REBUILD flag on them */ + if (!_add_image_component_list(raid0_seg, 1, 0, &data_lvs, 0)) + return NULL; + lv->status |= RAID; - seg->status |= RAID; - if (!lv_update_and_reload(lv)) + /* Allocate metadata lvs if requested */ + if (alloc_metadata_devs && !_raid0_add_or_remove_metadata_lvs(lv, 0, NULL)) + return NULL; + + if (update_and_reload && !lv_update_and_reload(lv)) + return NULL; + + return raid0_seg; +} +/* End: striped -> raid0 conversion */ + +/* Begin: raid0 -> striped conversion */ +/* HM Helper: walk the segment lvs of a segment @seg and find smallest area at offset @area_le */ +static uint32_t _smallest_segment_lvs_area(struct lv_segment *seg, uint32_t area_le) +{ + uint32_t r = ~0, s; + + /* Find smallest segment of each of the data image lvs at offset area_le */ + for (s = 0; s < seg->area_count; s++) { + struct lv_segment *seg1 = find_seg_by_le(seg_lv(seg, s), area_le); + + r = min(r, seg1->le + seg1->len - area_le); + } + + return r; +} + +/* HM Helper: Split segments in segment LVs in all areas of @seg at offset @area_le */ +static int _split_area_lvs_segments(struct lv_segment *seg, uint32_t area_le) +{ + uint32_t s; + + /* Make sure that there's segments starting at area_le in all data LVs */ + for (s = 0; s < seg->area_count; s++) + if (area_le < seg_lv(seg, s)->le_count) + if (!lv_split_segment(seg_lv(seg, s), area_le)) { + log_error(INTERNAL_ERROR "splitting data lv segment"); + return_0; + } + + return 1; +} + +/* HM Helper: allocate a new striped segment and add it to list @new_segments */ +static int _alloc_and_add_new_striped_segment(struct logical_volume *lv, + uint32_t le, uint32_t area_len, + struct dm_list *new_segments) +{ + struct lv_segment *seg = first_seg(lv), *new_seg; + struct segment_type *striped_segtype; + + if (!(striped_segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + /* Allocate a segment with seg->area_count areas */ + if (!(new_seg = alloc_lv_segment(striped_segtype, lv, le, area_len * seg->area_count, + seg->status & ~RAID, + seg->stripe_size, NULL, seg->area_count, + area_len, seg->chunk_size, 0, 0, NULL))) return_0; + dm_list_add(new_segments, &new_seg->list); + return 1; } /* - * lv_raid_reshape - * @lv - * @new_segtype + * All areas from @lv image component LV's segments are + * being split at "striped" compatible boundaries and + * moved to @new_segments allocated. * - * Convert an LV from one RAID type (or 'mirror' segtype) to another. + * The metadata+data component LVs are being mapped to an + * error target and linked to @removal_lvs for disposal + * by the caller. * * Returns: 1 on success, 0 on failure */ -int lv_raid_reshape(struct logical_volume *lv, - const struct segment_type *new_segtype) +static int _raid0_to_striped_retrieve_segments_and_lvs(struct logical_volume *lv, + struct dm_list *removal_lvs) +{ + uint32_t s, area_le, area_len, le; + struct lv_segment *data_seg, *seg = first_seg(lv), *seg_to; + struct dm_list new_segments; + + dm_list_init(&new_segments); + + /* + * Walk all segments of all data LVs splitting them up at proper boundaries + * and create the number of new striped segments we need to move them across + */ + area_le = le = 0; + while (le < lv->le_count) { + area_len = _smallest_segment_lvs_area(seg, area_le); + area_le += area_len; + + if (!_split_area_lvs_segments(seg, area_le) || + !_alloc_and_add_new_striped_segment(lv, le, area_len, &new_segments)) + return 0; + + le += area_len * seg->area_count; + } + + /* Now move the prepared split areas across to the new segments */ + area_le = 0; + dm_list_iterate_items(seg_to, &new_segments) { + for (s = 0; s < seg->area_count; s++) { + data_seg = find_seg_by_le(seg_lv(seg, s), area_le); + + /* Move the respective area across to our new segments area */ + if (!move_lv_segment_area(seg_to, s, data_seg, 0)) + return_0; + } + + /* Presumes all data LVs have equal size */ + area_le += data_seg->len; + } + + /* Extract any metadata LVs and the empty data LVs for disposal by the caller */ + if ((seg->meta_areas && !_extract_image_component_list(seg, RAID_META, 0, removal_lvs)) || + !_extract_image_component_list(seg, RAID_IMAGE, 0, removal_lvs)) + return_0; + + /* + * Remove the one segment holding the image component areas + * from the top-level LV, then add the new segments to it + */ + dm_list_del(&seg->list); + dm_list_splice(&lv->segments, &new_segments); + + return 1; +} + +/* + * HM + * + * Helper convert raid0 to striped + * + * Convert a RAID0 set to striped + * + * Returns: 1 on success, 0 on failure + * + * HM FIXME: check last_seg(lv)->reshape_len and reduce LV aprropriately + */ +static int _convert_raid0_to_striped(struct logical_volume *lv, + int update_and_reload, + struct dm_list *removal_lvs) +{ + /* Caller should ensure, but... */ + if (!seg_is_any_raid0(first_seg(lv))) { + log_error(INTERNAL_ERROR "Cannot convert non-%s LV %s to %s", + SEG_TYPE_NAME_RAID0, display_lvname(lv), SEG_TYPE_NAME_STRIPED); + return 0; + } + + /* Move the AREA_PV areas across to new top-level segments of type "striped" */ + if (!_raid0_to_striped_retrieve_segments_and_lvs(lv, removal_lvs)) { + log_error("Failed to retrieve raid0 segments from %s.", lv->name); + return_0; + } + + lv->status &= ~RAID; + + if (!(first_seg(lv)->segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + if (update_and_reload) { + if (!lv_update_and_reload(lv)) + return_0; + + /* Eliminate the residual LVs, write VG, commit it and take a backup */ + return _eliminate_extracted_lvs(lv->vg, removal_lvs); + } + + return 1; +} +/* End: raid0 -> striped conversion */ + +/****************************************************************************/ +/* Begin: various conversions between layers (aka MD takeover) */ +/* + * takeover function argument list definition + * + * All takeover functions and helper functions + * to support them have this list of arguments + */ +#define TAKEOVER_FN_ARGUMENTS \ + struct logical_volume *lv, \ + int yes, int force, \ + const struct segment_type *new_segtype, \ + unsigned new_image_count, \ + const unsigned new_stripes, \ + unsigned new_stripe_size, struct dm_list *allocate_pvs + +/* + * a matrix with types from -> types to holds + * takeover function pointers this prototype + */ +typedef int (*takeover_fn_t)(TAKEOVER_FN_ARGUMENTS); + +/* Return takeover function table index for @segtype */ +static int _takeover_fn_idx(const struct segment_type *segtype) +{ + static uint64_t _segtype_to_idx[] = { + SEG_AREAS_STRIPED, + SEG_MIRROR, + SEG_RAID0, + SEG_RAID0_META, + SEG_RAID1, + }; + unsigned r = ARRAY_SIZE(_segtype_to_idx); + + while (r-- > 0) + if (segtype->flags & _segtype_to_idx[r]) + return r; + + return -1; +} + +/* Macro to define raid takeover helper function header */ +#define TAKEOVER_FN(function_name) \ +static int function_name(TAKEOVER_FN_ARGUMENTS) + +/* + * noop and error takoover handler functions + * to allow for logging that an lv already + * has the requested type or that the requested + * conversion is not possible + */ +/* Noop takeover handler for @lv: logs that LV already is of the requested type */ +TAKEOVER_FN(_noop) +{ + log_warn("Logical volume %s already is of requested type %s", + display_lvname(lv), lvseg_name(first_seg(lv))); + + return 1; +} + +/* Error takeover handler for @lv: logs what's (im)possible to convert to (and mabye added later) */ +TAKEOVER_FN(_error) { struct lv_segment *seg = first_seg(lv); - if (!new_segtype) { - log_error(INTERNAL_ERROR "New segtype not specified"); + log_error("Converting the segment type for %s from %s to %s" + " is not supported.", display_lvname(lv), + lvseg_name(seg), new_segtype->name); + + return 0; +} + + +/* Striped -> raid0 */ +TAKEOVER_FN(_s_r0) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_striped_to_raid0(lv, 0 /* !alloc_metadata_devs */, 1 /* update_and_reload */) ? 1 : 0; +} + +/* Striped -> raid0_meta */ +TAKEOVER_FN(_s_r0m) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_striped_to_raid0(lv, 1 /* alloc_metadata_devs */, 1 /* update_and_reload */) ? 1 : 0; +} + +/* raid0 -> raid0_meta */ +TAKEOVER_FN(_r0_r0m) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _raid0_add_or_remove_metadata_lvs(lv, 1, NULL); +} + +/* raid0_meta -> raid0 */ +TAKEOVER_FN(_r0m_r0) +{ + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _raid0_add_or_remove_metadata_lvs(lv, 1, &removal_lvs); +} + +/* raid0_meta -> striped */ +TAKEOVER_FN(_r0m_s) +{ + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_raid0_to_striped(lv, 1, &removal_lvs); +} + +/* raid0 -> striped */ +TAKEOVER_FN(_r0_s) +{ + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + return _convert_raid0_to_striped(lv, 1, &removal_lvs); +} + +/* Mirror -> raid1 */ +TAKEOVER_FN(_m_r1) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_mirror_to_raid1(lv, new_segtype, 1); +} + +/* + * 2-dimensional takeover function matrix defining the + * FSM of possible/impossible or noop (i.e. requested + * conversion already given on the lv) conversions + * + * Rows define from segtype and columns to segtype + */ +static takeover_fn_t _takeover_fn[][5] = { + /* from |, to -> striped mirror raid0 raid0_meta raid1 */ + /* v */ + /* striped */ { _noop, _error, _s_r0, _s_r0m, _error }, + /* mirror */ { _error, _noop, _error, _error, _m_r1 }, + /* raid0 */ { _r0_s, _error, _noop, _r0_r0m, _error }, + /* raid0_meta */ { _r0m_s, _error, _r0m_r0, _noop, _error }, +}; + +/* End: various conversions between layers (aka MD takeover) */ +/****************************************************************************/ + +/* + * lv_raid_convert + * @lv + * @new_segtype + * + * Convert @lv from one RAID type (or 'mirror' segtype) to @new_segtype, + * change RAID algorithm (e.g. left symmetric to right asymmetric), + * add/remove LVs to/from a RAID LV or change stripe sectors + * + * Non dm-raid changes are factored in e.g. "mirror" and "striped" related + * fucntions called from here. + * All the rest of the raid <-> raid conversions go into a function + * _convert_raid_to_raid() of their own called from here. + * + * Returns: 1 on success, 0 on failure + */ +int lv_raid_convert(struct logical_volume *lv, + const struct segment_type *new_segtype, + int yes, int force, + unsigned new_image_count, + const unsigned new_stripes, + const unsigned new_stripe_size, + struct dm_list *allocate_pvs) + { + int from_idx, to_idx; + uint32_t stripes, stripe_size; + struct lv_segment *seg = first_seg(lv); + struct segment_type *striped_segtype; + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + if (!new_segtype) { + log_error(INTERNAL_ERROR "New segtype not specified"); + return 0; + } + + if (!(striped_segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + /* Given segtype of @lv */ + if (!seg_is_striped(seg) && /* Catches linear = "overloaded striped with one area" as well */ + !seg_is_mirror(seg) && + !seg_is_raid(seg)) + goto err; + + /* Requested segtype */ + if (!segtype_is_linear(new_segtype) && + !segtype_is_striped(new_segtype) && + !segtype_is_mirror(new_segtype) && + !segtype_is_raid(new_segtype)) + goto err; + + /* Define new image count if not passed in */ + new_image_count = new_image_count ?: seg->area_count; + + if (!_check_max_raid_devices(new_image_count)) + return 0; + + /* Define new stripe size if not passed in */ + stripe_size = new_stripe_size ?: seg->stripe_size; + stripes = new_stripes ?: _data_rimages_count(seg, seg->area_count); + + /* @lv has to be active to perform raid conversion operatons */ + if (!lv_is_active(lv)) { + log_error("%s must be active to perform this operation.", + display_lvname(lv)); return 0; } - if (vg_is_clustered(lv->vg) && !lv_is_active_exclusive_locally(lv)) { - log_error("%s/%s must be active exclusive locally to" - " perform this operation.", lv->vg->name, lv->name); + /* If clustered VG, @lv has to be active locally */ + if (vg_is_clustered(lv->vg) && !lv_is_active_exclusive_locally(lv)) { + log_error("%s must be active exclusive locally to" + " perform this operation.", display_lvname(lv)); + return 0; + } + + /* Can't perfom any raid conversions on out of sync LVs */ + if (!_raid_in_sync(lv)) { + log_error("Unable to convert %s while it is not in-sync", + display_lvname(lv)); return 0; } - if (!strcmp(seg->segtype->name, "mirror") && - (!strcmp(new_segtype->name, SEG_TYPE_NAME_RAID1))) - return _convert_mirror_to_raid1(lv, new_segtype); + /* + * Table driven takeover, i.e. conversions from one segment type to another + */ + from_idx = _takeover_fn_idx(seg->segtype); + to_idx = _takeover_fn_idx(new_segtype); + if ((from_idx < 0 || to_idx < 0) || + !_takeover_fn[from_idx][to_idx](lv, yes, force, new_segtype, new_image_count, + stripes, stripe_size, allocate_pvs)) + goto err; + + log_print_unless_silent("Logical volume %s successfully converted", display_lvname(lv)); + return 1; - log_error("Converting the segment type for %s/%s from %s to %s" - " is not yet supported.", lv->vg->name, lv->name, +err: + /* FIXME: enhance message */ + log_error("Converting the segment type for %s from %s to %s" + " is not supported.", display_lvname(lv), lvseg_name(seg), new_segtype->name); return 0; } - static int _remove_partial_multi_segment_image(struct logical_volume *lv, struct dm_list *remove_pvs) { diff --git a/lib/metadata/segtype.h b/lib/metadata/segtype.h index 4b2df78..ff2b3fc 100644 --- a/lib/metadata/segtype.h +++ b/lib/metadata/segtype.h @@ -1,6 +1,6 @@ /* * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. - * Copyright (C) 2004-2010 Red Hat, Inc. All rights reserved. + * Copyright (C) 2004-2015 Red Hat, Inc. All rights reserved. * * This file is part of LVM2. * @@ -28,28 +28,51 @@ struct dm_config_node; struct dev_manager; /* Feature flags */ -#define SEG_CAN_SPLIT 0x00000001U -#define SEG_AREAS_STRIPED 0x00000002U -#define SEG_AREAS_MIRRORED 0x00000004U -#define SEG_SNAPSHOT 0x00000008U -#define SEG_FORMAT1_SUPPORT 0x00000010U -#define SEG_VIRTUAL 0x00000020U -#define SEG_CANNOT_BE_ZEROED 0x00000040U -#define SEG_MONITORED 0x00000080U -#define SEG_REPLICATOR 0x00000100U -#define SEG_REPLICATOR_DEV 0x00000200U -#define SEG_RAID 0x00000400U -#define SEG_THIN_POOL 0x00000800U -#define SEG_THIN_VOLUME 0x00001000U -#define SEG_CACHE 0x00002000U -#define SEG_CACHE_POOL 0x00004000U -#define SEG_MIRROR 0x00008000U -#define SEG_ONLY_EXCLUSIVE 0x00010000U /* In cluster only exlusive activation */ -#define SEG_CAN_ERROR_WHEN_FULL 0x00020000U -#define SEG_UNKNOWN 0x80000000U +#define SEG_CAN_SPLIT 0x0000000000000001U +#define SEG_AREAS_STRIPED 0x0000000000000002U +#define SEG_AREAS_MIRRORED 0x0000000000000004U +#define SEG_SNAPSHOT 0x0000000000000008U +#define SEG_FORMAT1_SUPPORT 0x0000000000000010U +#define SEG_VIRTUAL 0x0000000000000020U +#define SEG_CANNOT_BE_ZEROED 0x0000000000000040U +#define SEG_MONITORED 0x0000000000000080U +#define SEG_REPLICATOR 0x0000000000000100U +#define SEG_REPLICATOR_DEV 0x0000000000000200U +#define SEG_RAID 0x0000000000000400U +#define SEG_THIN_POOL 0x0000000000000800U +#define SEG_THIN_VOLUME 0x0000000000001000U +#define SEG_CACHE 0x0000000000002000U +#define SEG_CACHE_POOL 0x0000000000004000U +#define SEG_MIRROR 0x0000000000008000U +#define SEG_ONLY_EXCLUSIVE 0x0000000000010000U /* In cluster only exlusive activation */ +#define SEG_CAN_ERROR_WHEN_FULL 0x0000000000020000U + +#define SEG_RAID0 0x0000000000040000U +#define SEG_RAID0_META 0x0000000000080000U +#define SEG_RAID1 0x0000000000100000U +#define SEG_RAID10 0x0000000000200000U +#define SEG_RAID4 0x0000000000400000U +#define SEG_RAID5_N 0x0000000000800000U +#define SEG_RAID5_LA 0x0000000001000000U +#define SEG_RAID5_LS 0x0000000002000000U +#define SEG_RAID5_RA 0x0000000004000000U +#define SEG_RAID5_RS 0x0000000008000000U +#define SEG_RAID5 SEG_RAID5_LS +#define SEG_RAID6_NC 0x0000000010000000U +#define SEG_RAID6_NR 0x0000000020000000U +#define SEG_RAID6_ZR 0x0000000040000000U +#define SEG_RAID6_LA_6 0x0000000080000000U +#define SEG_RAID6_LS_6 0x0000000100000000U +#define SEG_RAID6_RA_6 0x0000000200000000U +#define SEG_RAID6_RS_6 0x0000000400000000U +#define SEG_RAID6_N_6 0x0000000800000000U +#define SEG_RAID6 SEG_RAID6_ZR + +#define SEG_UNKNOWN 0x8000000000000000U #define segtype_is_cache(segtype) ((segtype)->flags & SEG_CACHE ? 1 : 0) #define segtype_is_cache_pool(segtype) ((segtype)->flags & SEG_CACHE_POOL ? 1 : 0) +#define segtype_is_linear(segtype) (!strcmp(segtype->name, "linear")) #define segtype_is_mirrored(segtype) ((segtype)->flags & SEG_AREAS_MIRRORED ? 1 : 0) #define segtype_is_mirror(segtype) ((segtype)->flags & SEG_MIRROR ? 1 : 0) #define segtype_is_pool(segtype) ((segtype)->flags & (SEG_CACHE_POOL | SEG_THIN_POOL) ? 1 : 0) @@ -86,7 +109,7 @@ struct dev_manager; struct segment_type { struct dm_list list; /* Internal */ - uint32_t flags; + uint64_t flags; uint32_t parity_devs; /* Parity drives required by segtype */ struct segtype_handler *ops; @@ -139,6 +162,8 @@ struct segtype_handler { struct segment_type *get_segtype_from_string(struct cmd_context *cmd, const char *str); +struct segment_type *get_segtype_from_flag(struct cmd_context *cmd, + uint64_t flag); struct segtype_library; int lvm_register_segtype(struct segtype_library *seglib, @@ -152,23 +177,65 @@ struct segment_type *init_unknown_segtype(struct cmd_context *cmd, const char *name); #define RAID_FEATURE_RAID10 (1U << 0) /* version 1.3 */ +#define RAID_FEATURE_RAID0 (1U << 1) /* version 1.7 */ +#define RAID_FEATURE_RESHAPING (1U << 2) /* version 1.8 */ #ifdef RAID_INTERNAL int init_raid_segtypes(struct cmd_context *cmd, struct segtype_library *seglib); #endif -#define SEG_TYPE_NAME_RAID1 "raid1" -#define SEG_TYPE_NAME_RAID10 "raid10" -#define SEG_TYPE_NAME_RAID4 "raid4" -#define SEG_TYPE_NAME_RAID5 "raid5" -#define SEG_TYPE_NAME_RAID5_LA "raid5_la" -#define SEG_TYPE_NAME_RAID5_LS "raid5_ls" -#define SEG_TYPE_NAME_RAID5_RA "raid5_ra" -#define SEG_TYPE_NAME_RAID5_RS "raid5_rs" -#define SEG_TYPE_NAME_RAID6 "raid6" -#define SEG_TYPE_NAME_RAID6_NC "raid6_nc" -#define SEG_TYPE_NAME_RAID6_NR "raid6_nr" -#define SEG_TYPE_NAME_RAID6_ZR "raid6_zr" +#define SEG_TYPE_NAME_MIRROR "mirror" + +/* RAID specific seg and segtype checks */ +#define SEG_TYPE_NAME_LINEAR "linear" +#define SEG_TYPE_NAME_STRIPED "striped" + +#define SEG_TYPE_NAME_RAID0 "raid0" +#define SEG_TYPE_NAME_RAID0_META "raid0_meta" +#define SEG_TYPE_NAME_RAID1 "raid1" +#define SEG_TYPE_NAME_RAID10 "raid10" +#define SEG_TYPE_NAME_RAID4 "raid4" +#define SEG_TYPE_NAME_RAID5 "raid5" +#define SEG_TYPE_NAME_RAID5_LA "raid5_la" +#define SEG_TYPE_NAME_RAID5_LS "raid5_ls" +#define SEG_TYPE_NAME_RAID5_RA "raid5_ra" +#define SEG_TYPE_NAME_RAID5_RS "raid5_rs" +#define SEG_TYPE_NAME_RAID6 "raid6" +#define SEG_TYPE_NAME_RAID6_NC "raid6_nc" +#define SEG_TYPE_NAME_RAID6_NR "raid6_nr" +#define SEG_TYPE_NAME_RAID6_ZR "raid6_zr" + +#define segtype_is_raid0(segtype) (((segtype)->flags & SEG_RAID0) ? 1 : 0) +#define segtype_is_raid0_meta(segtype) (((segtype)->flags & SEG_RAID0_META) ? 1 : 0) +#define segtype_is_any_raid0(segtype) (((segtype)->flags & (SEG_RAID0|SEG_RAID0_META)) ? 1 : 0) +#define segtype_is_raid1(segtype) (((segtype)->flags & SEG_RAID1) ? 1 : 0) +#define segtype_is_raid10(segtype) (((segtype)->flags & SEG_RAID10) ? 1 : 0) +#define segtype_is_raid4(segtype) (((segtype)->flags & SEG_RAID4) ? 1 : 0) +#define segtype_is_raid5_ls(segtype) (((segtype)->flags & SEG_RAID5_LS) ? 1 : 0) +#define segtype_is_raid5_rs(segtype) (((segtype)->flags & SEG_RAID5_RS) ? 1 : 0) +#define segtype_is_raid5_la(segtype) (((segtype)->flags & SEG_RAID5_LA) ? 1 : 0) +#define segtype_is_raid5_ra(segtype) (((segtype)->flags & SEG_RAID5_RA) ? 1 : 0) +#define segtype_is_any_raid5(segtype) (((segtype)->flags & \ + (SEG_RAID5_LS|SEG_RAID5_LA|SEG_RAID5_RS|SEG_RAID5_RA|SEG_RAID5_N)) ? 1 : 0) +#define segtype_is_raid6_zr(segtype) (((segtype)->flags & SEG_RAID6_ZR) ? 1 : 0) +#define segtype_is_raid6_nc(segtype) (((segtype)->flags & SEG_RAID6_NC) ? 1 : 0) +#define segtype_is_raid6_nr(segtype) (((segtype)->flags & SEG_RAID6_NR) ? 1 : 0) +#define segtype_is_striped_raid(segtype) (segtype_is_raid(segtype) && !segtype_is_raid1(segtype)) + +#define seg_is_raid0(seg) segtype_is_raid0((seg)->segtype) +#define seg_is_raid0_meta(seg) segtype_is_raid0_meta((seg)->segtype) +#define seg_is_any_raid0(seg) segtype_is_any_raid0((seg)->segtype) +#define seg_is_raid1(seg) segtype_is_raid1((seg)->segtype) +#define seg_is_raid10(seg) segtype_is_raid10((seg)->segtype) +#define seg_is_raid4(seg) segtype_is_raid4((seg)->segtype) +#define seg_is_raid5_ls(seg) segtype_is_raid5_ls((seg)->segtype) +#define seg_is_raid5_rs(seg) segtype_is_raid5_rs((seg)->segtype) +#define seg_is_raid5_la(seg) segtype_is_raid5_la((seg)->segtype) +#define seg_is_raid5_ra(seg) segtype_is_raid5_ra((seg)->segtype) +#define seg_is_raid6_zr(seg) segtype_is_raid6_zr((seg)->segtype) +#define seg_is_raid6_nc(seg) segtype_is_raid6_nc((seg)->segtype) +#define seg_is_raid6_nr(seg) segtype_is_raid6_nr((seg)->segtype) +#define seg_is_striped_raid(seg) segtype_is_striped_raid((seg)->segtype) #ifdef REPLICATOR_INTERNAL int init_replicator_segtype(struct cmd_context *cmd, struct segtype_library *seglib); diff --git a/lib/raid/raid.c b/lib/raid/raid.c index 39e3a06..9a8e1b0 100644 --- a/lib/raid/raid.c +++ b/lib/raid/raid.c @@ -34,8 +34,9 @@ static void _raid_display(const struct lv_segment *seg) display_stripe(seg, s, " "); } - for (s = 0; s < seg->area_count; ++s) - log_print(" Raid Metadata LV%2d\t%s", s, seg_metalv(seg, s)->name); + if (seg->meta_areas) + for (s = 0; s < seg->area_count; ++s) + log_print(" Raid Metadata LV%2d\t%s", s, seg_metalv(seg, s)->name); log_print(" "); } @@ -43,8 +44,9 @@ static void _raid_display(const struct lv_segment *seg) static int _raid_text_import_area_count(const struct dm_config_node *sn, uint32_t *area_count) { - if (!dm_config_get_uint32(sn, "device_count", area_count)) { - log_error("Couldn't read 'device_count' for " + if (!dm_config_get_uint32(sn, "device_count", area_count) && + !dm_config_get_uint32(sn, "stripe_count", area_count)) { + log_error("Couldn't read '(devicei|stripe)_count' for " "segment '%s'.", dm_config_parent_name(sn)); return 0; } @@ -56,7 +58,7 @@ static int _raid_text_import_areas(struct lv_segment *seg, const struct dm_config_value *cv) { unsigned int s; - struct logical_volume *lv1; + struct logical_volume *lv; const char *seg_name = dm_config_parent_name(sn); if (!seg->area_count) { @@ -70,29 +72,33 @@ static int _raid_text_import_areas(struct lv_segment *seg, return 0; } - if (!cv->next) { - log_error("Missing data device in areas array for segment %s.", seg_name); - return 0; - } - - /* Metadata device comes first */ - if (!(lv1 = find_lv(seg->lv->vg, cv->v.str))) { - log_error("Couldn't find volume '%s' for segment '%s'.", - cv->v.str ? : "NULL", seg_name); - return 0; - } - if (!set_lv_segment_area_lv(seg, s, lv1, 0, RAID_META)) + /* Metadata device comes first unless RAID0 optionally w/o metadata dev */ + if (strcmp(cv->v.str, "-")) { + if (!cv->next) { + log_error("Missing data device in areas array for segment %s.", seg_name); + return 0; + } + + if (!(lv = find_lv(seg->lv->vg, cv->v.str))) { + log_error("Couldn't find volume '%s' for segment '%s'.", + cv->v.str ? : "NULL", seg_name); + return 0; + } + if (!set_lv_segment_area_lv(seg, s, lv, 0, RAID_META)) return_0; + } - /* Data device comes second */ cv = cv->next; - if (!(lv1 = find_lv(seg->lv->vg, cv->v.str))) { + + /* Data device comes second unless RAID0 */ + if (!(lv = find_lv(seg->lv->vg, cv->v.str))) { log_error("Couldn't find volume '%s' for segment '%s'.", cv->v.str ? : "NULL", seg_name); return 0; } - if (!set_lv_segment_area_lv(seg, s, lv1, 0, RAID_IMAGE)) - return_0; + + if (!set_lv_segment_area_lv(seg, s, lv, 0, RAID_IMAGE)) + return_0; } /* @@ -111,50 +117,29 @@ static int _raid_text_import(struct lv_segment *seg, const struct dm_config_node *sn, struct dm_hash_table *pv_hash) { + int i; const struct dm_config_value *cv; - - if (dm_config_has_node(sn, "region_size")) { - if (!dm_config_get_uint32(sn, "region_size", &seg->region_size)) { - log_error("Couldn't read 'region_size' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "stripe_size")) { - if (!dm_config_get_uint32(sn, "stripe_size", &seg->stripe_size)) { - log_error("Couldn't read 'stripe_size' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "writebehind")) { - if (!dm_config_get_uint32(sn, "writebehind", &seg->writebehind)) { - log_error("Couldn't read 'writebehind' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "min_recovery_rate")) { - if (!dm_config_get_uint32(sn, "min_recovery_rate", - &seg->min_recovery_rate)) { - log_error("Couldn't read 'min_recovery_rate' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "max_recovery_rate")) { - if (!dm_config_get_uint32(sn, "max_recovery_rate", - &seg->max_recovery_rate)) { - log_error("Couldn't read 'max_recovery_rate' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; + const struct { + const char *name; + void *var; + } attr_import[] = { + { "region_size", &seg->region_size }, + { "stripe_size", &seg->stripe_size }, + { "writebehind", &seg->writebehind }, + { "min_recovery_rate", &seg->min_recovery_rate }, + { "max_recovery_rate", &seg->max_recovery_rate }, + }, *aip = attr_import; + + for (i = 0; i < DM_ARRAY_SIZE(attr_import); i++, aip++) { + if (dm_config_has_node(sn, aip->name)) { + if (!dm_config_get_uint32(sn, aip->name, aip->var)) { + log_error("Couldn't read '%s' for segment %s of logical volume %s.", + aip->name, dm_config_parent_name(sn), seg->lv->name); + return 0; + } } } + if (!dm_config_get_list(sn, "raids", &cv)) { log_error("Couldn't find RAID array for " "segment %s of logical volume %s.", @@ -163,7 +148,7 @@ static int _raid_text_import(struct lv_segment *seg, } if (!_raid_text_import_areas(seg, sn, cv)) { - log_error("Failed to import RAID images"); + log_error("Failed to import RAID component pairs"); return 0; } @@ -174,17 +159,29 @@ static int _raid_text_import(struct lv_segment *seg, static int _raid_text_export(const struct lv_segment *seg, struct formatter *f) { - outf(f, "device_count = %u", seg->area_count); - if (seg->region_size) - outf(f, "region_size = %" PRIu32, seg->region_size); + int raid0 = seg_is_any_raid0(seg); + + if (raid0) + outfc(f, (seg->area_count == 1) ? "# linear" : NULL, + "stripe_count = %u", seg->area_count); + + else { + outf(f, "device_count = %u", seg->area_count); + if (seg->region_size) + outf(f, "region_size = %" PRIu32, seg->region_size); + } + if (seg->stripe_size) outf(f, "stripe_size = %" PRIu32, seg->stripe_size); - if (seg->writebehind) - outf(f, "writebehind = %" PRIu32, seg->writebehind); - if (seg->min_recovery_rate) - outf(f, "min_recovery_rate = %" PRIu32, seg->min_recovery_rate); - if (seg->max_recovery_rate) - outf(f, "max_recovery_rate = %" PRIu32, seg->max_recovery_rate); + + if (!raid0) { + if (seg_is_raid1(seg) && seg->writebehind) + outf(f, "writebehind = %" PRIu32, seg->writebehind); + if (seg->min_recovery_rate) + outf(f, "min_recovery_rate = %" PRIu32, seg->min_recovery_rate); + if (seg->max_recovery_rate) + outf(f, "max_recovery_rate = %" PRIu32, seg->max_recovery_rate); + } return out_areas(f, seg, "raid"); } @@ -222,28 +219,34 @@ static int _raid_add_target_line(struct dev_manager *dm __attribute__((unused)), return 0; } - if (!seg->region_size) { - log_error("Missing region size for mirror segment."); - return 0; - } + if (!seg_is_any_raid0(seg)) { + if (!seg->region_size) { + log_error("Missing region size for mirror segment."); + return 0; + } - for (s = 0; s < seg->area_count; s++) - if (seg_lv(seg, s)->status & LV_REBUILD) - rebuilds |= 1ULL << s; + for (s = 0; s < seg->area_count; s++) + if (seg_lv(seg, s)->status & LV_REBUILD) + rebuilds |= 1ULL << s; - for (s = 0; s < seg->area_count; s++) - if (seg_lv(seg, s)->status & LV_WRITEMOSTLY) - writemostly |= 1ULL << s; + for (s = 0; s < seg->area_count; s++) + if (seg_lv(seg, s)->status & LV_WRITEMOSTLY) + writemostly |= 1ULL << s; - if (mirror_in_sync()) - flags = DM_NOSYNC; + if (mirror_in_sync()) + flags = DM_NOSYNC; + } params.raid_type = lvseg_name(seg); + if (seg->segtype->parity_devs) { /* RAID 4/5/6 */ params.mirrors = 1; params.stripes = seg->area_count - seg->segtype->parity_devs; - } else if (strcmp(seg->segtype->name, SEG_TYPE_NAME_RAID10)) { + } else if (seg_is_any_raid0(seg)){ + params.mirrors = 1; + params.stripes = seg->area_count; + } else if (seg_is_raid10(seg)) { /* RAID 10 only supports 2 mirrors now */ params.mirrors = 2; params.stripes = seg->area_count / 2; @@ -252,13 +255,18 @@ static int _raid_add_target_line(struct dev_manager *dm __attribute__((unused)), params.mirrors = seg->area_count; params.stripes = 1; params.writebehind = seg->writebehind; + params.writemostly = writemostly; } - params.region_size = seg->region_size; + + /* RAID 0 doesn't have a bitmap, thus no region_size, rebuilds etc. */ + if (!seg_is_any_raid0(seg)) { + params.region_size = seg->region_size; + params.rebuilds = rebuilds; + params.min_recovery_rate = seg->min_recovery_rate; + params.max_recovery_rate = seg->max_recovery_rate; + } + params.stripe_size = seg->stripe_size; - params.rebuilds = rebuilds; - params.writemostly = writemostly; - params.min_recovery_rate = seg->min_recovery_rate; - params.max_recovery_rate = seg->max_recovery_rate; params.flags = flags; if (!dm_tree_node_add_raid_target_with_params(node, len, &params)) @@ -332,6 +340,7 @@ static int _raid_target_present(struct cmd_context *cmd, const char *feature; } _features[] = { { 1, 3, RAID_FEATURE_RAID10, SEG_TYPE_NAME_RAID10 }, + { 1, 7, RAID_FEATURE_RAID0, SEG_TYPE_NAME_RAID0 }, }; static int _raid_checked = 0; @@ -437,18 +446,20 @@ static const struct raid_type { unsigned parity; int extra_flags; } _raid_types[] = { - { SEG_TYPE_NAME_RAID1, 0, SEG_AREAS_MIRRORED }, + { SEG_TYPE_NAME_RAID0, 0, SEG_RAID0 }, + { SEG_TYPE_NAME_RAID0_META, 0, SEG_RAID0_META }, + { SEG_TYPE_NAME_RAID1, 0, SEG_RAID1 | SEG_AREAS_MIRRORED }, { SEG_TYPE_NAME_RAID10, 0, SEG_AREAS_MIRRORED }, - { SEG_TYPE_NAME_RAID4, 1 }, - { SEG_TYPE_NAME_RAID5, 1 }, - { SEG_TYPE_NAME_RAID5_LA, 1 }, - { SEG_TYPE_NAME_RAID5_LS, 1 }, - { SEG_TYPE_NAME_RAID5_RA, 1 }, - { SEG_TYPE_NAME_RAID5_RS, 1 }, - { SEG_TYPE_NAME_RAID6, 2 }, - { SEG_TYPE_NAME_RAID6_NC, 2 }, - { SEG_TYPE_NAME_RAID6_NR, 2 }, - { SEG_TYPE_NAME_RAID6_ZR, 2 } + { SEG_TYPE_NAME_RAID4, 1, SEG_RAID4 }, + { SEG_TYPE_NAME_RAID5, 1, SEG_RAID5_LS }, + { SEG_TYPE_NAME_RAID5_LA, 1, SEG_RAID5_LA }, + { SEG_TYPE_NAME_RAID5_LS, 1, SEG_RAID5_LS }, + { SEG_TYPE_NAME_RAID5_RA, 1, SEG_RAID5_RA }, + { SEG_TYPE_NAME_RAID5_RS, 1, SEG_RAID5_RS }, + { SEG_TYPE_NAME_RAID6, 2, SEG_RAID6_ZR }, + { SEG_TYPE_NAME_RAID6_NC, 2, SEG_RAID6_NC }, + { SEG_TYPE_NAME_RAID6_NR, 2, SEG_RAID6_NR }, + { SEG_TYPE_NAME_RAID6_ZR, 2, SEG_RAID6_ZR } }; static struct segment_type *_init_raid_segtype(struct cmd_context *cmd, diff --git a/lib/uuid/uuid.c b/lib/uuid/uuid.c index c85b822..67162dd 100644 --- a/lib/uuid/uuid.c +++ b/lib/uuid/uuid.c @@ -140,7 +140,7 @@ int id_valid(struct id *id) for (i = 0; i < ID_LEN; i++) if (!_inverse_c[id->uuid[i]]) { - log_error("UUID contains invalid character"); + log_error("UUID contains invalid character '%c'", id->uuid[i]); return 0; } diff --git a/libdm/libdm-deptree.c b/libdm/libdm-deptree.c index 578f645..c34d532 100644 --- a/libdm/libdm-deptree.c +++ b/libdm/libdm-deptree.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2005-2014 Red Hat, Inc. All rights reserved. + * Copyright (C) 2005-2015 Red Hat, Inc. All rights reserved. * * This file is part of the device-mapper userspace tools. * @@ -42,6 +42,8 @@ enum { SEG_ZERO, SEG_THIN_POOL, SEG_THIN, + SEG_RAID0, + SEG_RAID0_META, SEG_RAID1, SEG_RAID10, SEG_RAID4, @@ -74,6 +76,8 @@ static const struct { { SEG_ZERO, "zero"}, { SEG_THIN_POOL, "thin-pool"}, { SEG_THIN, "thin"}, + { SEG_RAID0, "raid0"}, + { SEG_RAID0_META, "raid0_meta"}, { SEG_RAID1, "raid1"}, { SEG_RAID10, "raid10"}, { SEG_RAID4, "raid4"}, @@ -86,7 +90,7 @@ static const struct { { SEG_RAID6_NC, "raid6_nc"}, /* - *WARNING: Since 'raid' target overloads this 1:1 mapping table + * WARNING: Since 'raid' target overloads this 1:1 mapping table * for search do not add new enum elements past them! */ { SEG_RAID5_LS, "raid5"}, /* same as "raid5_ls" (default for MD also) */ @@ -2089,6 +2093,8 @@ static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)), EMIT_PARAMS(*pos, "%s", synctype); } break; + case SEG_RAID0: + case SEG_RAID0_META: case SEG_RAID1: case SEG_RAID10: case SEG_RAID4: @@ -2286,6 +2292,26 @@ static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *s return 1; } +/* Return 2 if @p != 0 */ +static int _2_if_value(unsigned p) +{ + return p ? 2 : 0; +} + +/* Return number of bits passed in @bits assuming 2 * 64 bit size */ +static int _get_params_count(uint64_t *bits) +{ + int r = 0; + int i = 4; + + while (i--) { + r += 2 * hweight32(bits[i] & 0xFFFFFFFF); + r += 2 * hweight32(bits[i] >> 32); + } + + return r; +} + static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, uint32_t minor, struct load_segment *seg, uint64_t *seg_start, char *params, @@ -2294,34 +2320,32 @@ static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, uint32_t i; int param_count = 1; /* mandatory 'chunk size'/'stripe size' arg */ int pos = 0; + unsigned type; + + if (seg->area_count % 2) + return 0; if ((seg->flags & DM_NOSYNC) || (seg->flags & DM_FORCESYNC)) param_count++; - if (seg->region_size) - param_count += 2; - - if (seg->writebehind) - param_count += 2; + param_count += _2_if_value(seg->region_size) + + _2_if_value(seg->writebehind) + + _2_if_value(seg->min_recovery_rate) + + _2_if_value(seg->max_recovery_rate); - if (seg->min_recovery_rate) - param_count += 2; - - if (seg->max_recovery_rate) - param_count += 2; - - /* rebuilds is 64-bit */ - param_count += 2 * hweight32(seg->rebuilds & 0xFFFFFFFF); - param_count += 2 * hweight32(seg->rebuilds >> 32); - - /* rebuilds is 64-bit */ - param_count += 2 * hweight32(seg->writemostly & 0xFFFFFFFF); - param_count += 2 * hweight32(seg->writemostly >> 32); + /* rebuilds and writemostly are 4 * 64 bits */ + param_count += _get_params_count(&seg->rebuilds); + param_count += _get_params_count(&seg->writemostly); if ((seg->type == SEG_RAID1) && seg->stripe_size) log_error("WARNING: Ignoring RAID1 stripe size"); - EMIT_PARAMS(pos, "%s %d %u", _dm_segtypes[seg->type].target, + /* Kernel only expects "raid0", not "raid0_meta" */ + type = seg->type; + if (type == SEG_RAID0_META) + type = SEG_RAID0; + + EMIT_PARAMS(pos, "%s %d %u", _dm_segtypes[type].target, param_count, seg->stripe_size); if (seg->flags & DM_NOSYNC) @@ -2525,6 +2549,8 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major, seg->iv_offset != DM_CRYPT_IV_DEFAULT ? seg->iv_offset : *seg_start); break; + case SEG_RAID0: + case SEG_RAID0_META: case SEG_RAID1: case SEG_RAID10: case SEG_RAID4: @@ -4074,6 +4100,8 @@ int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset) seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); switch (seg->type) { + case SEG_RAID0: + case SEG_RAID0_META: case SEG_RAID1: case SEG_RAID4: case SEG_RAID5_LA: diff --git a/tools/lvchange.c b/tools/lvchange.c index e790ea0..0b5178d 100644 --- a/tools/lvchange.c +++ b/tools/lvchange.c @@ -720,7 +720,7 @@ static int _lvchange_writemostly(struct logical_volume *lv) struct cmd_context *cmd = lv->vg->cmd; struct lv_segment *raid_seg = first_seg(lv); - if (strcmp(raid_seg->segtype->name, SEG_TYPE_NAME_RAID1)) { + if (!seg_is_raid1(raid_seg)) { log_error("--write%s can only be used with 'raid1' segment type", arg_count(cmd, writemostly_ARG) ? "mostly" : "behind"); return 0; diff --git a/tools/lvconvert.c b/tools/lvconvert.c index fe8b761..a5c79e5 100644 --- a/tools/lvconvert.c +++ b/tools/lvconvert.c @@ -239,6 +239,7 @@ static int _check_conversion_type(struct cmd_context *cmd, const char *type_str) /* FIXME: Check thin-pool and thin more thoroughly! */ if (!strcmp(type_str, "snapshot") || + !strcmp(type_str, "striped") || !strncmp(type_str, "raid", 4) || !strcmp(type_str, "cache-pool") || !strcmp(type_str, "cache") || !strcmp(type_str, "thin-pool") || !strcmp(type_str, "thin")) @@ -378,6 +379,12 @@ static int _read_params(struct cmd_context *cmd, int argc, char **argv, if (!_check_conversion_type(cmd, type_str)) return_0; + if (arg_count(cmd, type_ARG) && + !(lp->segtype = get_segtype_from_string(cmd, arg_str_value(cmd, type_ARG, NULL)))) + return_0; + if (!get_stripe_params(cmd, &lp->stripes, &lp->stripe_size)) + return_0; + if (arg_count(cmd, repair_ARG) && arg_outside_list_is_set(cmd, "cannot be used with --repair", repair_ARG, @@ -1160,7 +1167,8 @@ static int _lvconvert_mirrors_parse_params(struct cmd_context *cmd, *new_mimage_count = lp->mirrors; /* Too many mimages? */ - if (lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) { + if ((!arg_count(cmd, type_ARG) || strcmp(arg_str_value(cmd, type_ARG, NULL), SEG_TYPE_NAME_RAID1)) && + lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) { log_error("Only up to %d images in mirror supported currently.", DEFAULT_MIRROR_MAX_IMAGES); return 0; @@ -1254,7 +1262,7 @@ static int _lvconvert_mirrors_aux(struct cmd_context *cmd, if ((lp->mirrors == 1) && !lv_is_mirrored(lv)) { log_warn("Logical volume %s is already not mirrored.", lv->name); - return 1; + return 2; /* Indicate fact it's already converted to caller */ } region_size = adjusted_mirror_region_size(lv->vg->extent_size, @@ -1577,7 +1585,7 @@ static int _lvconvert_mirrors(struct cmd_context *cmd, struct logical_volume *lv, struct lvconvert_params *lp) { - int repair = arg_count(cmd, repair_ARG); + int r, repair = arg_count(cmd, repair_ARG); uint32_t old_mimage_count; uint32_t old_log_count; uint32_t new_mimage_count; @@ -1629,29 +1637,17 @@ static int _lvconvert_mirrors(struct cmd_context *cmd, if (repair) return _lvconvert_mirrors_repair(cmd, lv, lp); - if (!_lvconvert_mirrors_aux(cmd, lv, lp, NULL, - new_mimage_count, new_log_count)) + if (!(r = _lvconvert_mirrors_aux(cmd, lv, lp, NULL, + new_mimage_count, new_log_count))) return 0; - if (!lp->need_polling) + if (r != 2 && !lp->need_polling) log_print_unless_silent("Logical volume %s converted.", lv->name); backup(lv->vg); return 1; } -static int _is_valid_raid_conversion(const struct segment_type *from_segtype, - const struct segment_type *to_segtype) -{ - if (from_segtype == to_segtype) - return 1; - - if (!segtype_is_raid(from_segtype) && !segtype_is_raid(to_segtype)) - return_0; /* Not converting to or from RAID? */ - - return 1; -} - static void _lvconvert_raid_repair_ask(struct cmd_context *cmd, struct lvconvert_params *lp, int *replace_dev) @@ -1701,13 +1697,6 @@ static int _lvconvert_raid(struct logical_volume *lv, struct lvconvert_params *l if (!_lvconvert_validate_thin(lv, lp)) return_0; - if (!_is_valid_raid_conversion(seg->segtype, lp->segtype)) { - log_error("Unable to convert %s/%s from %s to %s", - lv->vg->name, lv->name, - lvseg_name(seg), lp->segtype->name); - return 0; - } - /* Change number of RAID1 images */ if (arg_count(cmd, mirrors_ARG) || arg_count(cmd, splitmirrors_ARG)) { image_count = lv_raid_image_count(lv); @@ -1739,8 +1728,21 @@ static int _lvconvert_raid(struct logical_volume *lv, struct lvconvert_params *l if (arg_count(cmd, mirrors_ARG)) return lv_raid_change_image_count(lv, image_count, lp->pvh); - if (arg_count(cmd, type_ARG)) - return lv_raid_reshape(lv, lp->segtype); + if ((seg_is_linear(seg) || seg_is_striped(seg) || seg_is_mirrored(seg) || lv_is_raid(lv)) && + (arg_count(cmd, type_ARG) || + image_count || + arg_count(cmd, stripes_long_ARG) || + arg_count(cmd, stripesize_ARG))) { + unsigned stripe_size = arg_count(cmd, stripesize_ARG) ? lp->stripe_size : 0; + + if (segtype_is_any_raid0(lp->segtype) && + !(lp->target_attr & RAID_FEATURE_RAID0)) { + log_error("RAID module does not support RAID0."); + return 0; + } + + return lv_raid_convert(lv, lp->segtype, lp->yes, lp->force, image_count, lp->stripes, stripe_size, lp->pvh); + } if (arg_count(cmd, replace_ARG)) return lv_raid_replace(lv, lp->replace_pvh, lp->pvh); @@ -1754,7 +1756,9 @@ static int _lvconvert_raid(struct logical_volume *lv, struct lvconvert_params *l return 0; } - if (!lv_raid_percent(lv, &sync_percent)) { + if (!seg_is_striped(seg) && + !seg_is_any_raid0(seg) && + !lv_raid_percent(lv, &sync_percent)) { log_error("Unable to determine sync status of %s/%s.", lv->vg->name, lv->name); return 0; diff --git a/tools/lvcreate.c b/tools/lvcreate.c index e41f76c..d7383b0 100644 --- a/tools/lvcreate.c +++ b/tools/lvcreate.c @@ -453,7 +453,7 @@ static int _read_mirror_params(struct cmd_context *cmd, static int _read_raid_params(struct cmd_context *cmd, struct lvcreate_params *lp) { - if ((lp->stripes < 2) && !strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + if ((lp->stripes < 2) && segtype_is_raid10(lp->segtype)) { if (arg_count(cmd, stripes_ARG)) { /* User supplied the bad argument */ log_error("Segment type 'raid10' requires 2 or more stripes."); @@ -467,8 +467,9 @@ static int _read_raid_params(struct cmd_context *cmd, /* * RAID1 does not take a stripe arg */ - if ((lp->stripes > 1) && seg_is_mirrored(lp) && - strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + if ((lp->stripes > 1) && + (seg_is_mirrored(lp) || segtype_is_raid1(lp->segtype)) && + !segtype_is_raid10(lp->segtype)) { log_error("Stripe argument cannot be used with segment type, %s", lp->segtype->name); return 0; @@ -504,15 +505,26 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd, /* Common mirror and raid params */ if (arg_count(cmd, mirrors_ARG)) { + unsigned max_images; + const char *type; + lp->mirrors = arg_uint_value(cmd, mirrors_ARG, 0) + 1; + if (segtype_is_raid1(lp->segtype)) { + type = SEG_TYPE_NAME_RAID1; + max_images = DEFAULT_RAID_MAX_IMAGES; + } else { + type = "mirror"; + max_images = DEFAULT_MIRROR_MAX_IMAGES; + } - if (lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) { - log_error("Only up to " DM_TO_STRING(DEFAULT_MIRROR_MAX_IMAGES) - " images in mirror supported currently."); + if (lp->mirrors > max_images) { + log_error("Only up to %u images in %s supported currently.", + max_images, type); return 0; } - if ((lp->mirrors > 2) && !strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + if (lp->mirrors > 2 && + segtype_is_raid10(lp->segtype)) { /* * FIXME: When RAID10 is no longer limited to * 2-way mirror, 'lv_mirror_count()' @@ -534,6 +546,14 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd, /* Default to 2 mirrored areas if '--type mirror|raid1|raid10' */ lp->mirrors = seg_is_mirrored(lp) ? 2 : 1; + if (lp->stripes < 2 && + (segtype_is_any_raid0(lp->segtype) || segtype_is_raid10(lp->segtype))) + if (arg_count(cmd, stripes_ARG)) { + /* User supplied the bad argument */ + log_error("Segment type 'raid(1)0' requires 2 or more stripes."); + return 0; + } + lp->nosync = arg_is_set(cmd, nosync_ARG); if (!(lp->region_size = arg_uint_value(cmd, regionsize_ARG, 0)) && @@ -548,6 +568,26 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd, return 0; } + /* + * RAID1 does not take a stripe arg + */ + if ((lp->stripes > 1) && + (seg_is_mirrored(lp) || segtype_is_raid1(lp->segtype)) && + !segtype_is_any_raid0(lp->segtype) && + !segtype_is_raid10(lp->segtype)) { + log_error("Stripe argument cannot be used with segment type, %s", + lp->segtype->name); + return 0; + } + + if (arg_count(cmd, mirrors_ARG) && segtype_is_raid(lp->segtype) && + !segtype_is_raid1(lp->segtype) && + !segtype_is_raid10(lp->segtype)) { + log_error("Mirror argument cannot be used with segment type, %s", + lp->segtype->name); + return 0; + } + if (lp->region_size % (pagesize >> SECTOR_SHIFT)) { log_error("Region size (%" PRIu32 ") must be a multiple of " "machine memory page size (%d)", @@ -974,7 +1014,13 @@ static int _lvcreate_params(struct cmd_context *cmd, return 0; } - if (!strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10) && + if (segtype_is_any_raid0(lp->segtype) && + !(lp->target_attr & RAID_FEATURE_RAID0)) { + log_error("RAID module does not support RAID0."); + return 0; + } + + if (segtype_is_raid10(lp->segtype) && !(lp->target_attr & RAID_FEATURE_RAID10)) { log_error("RAID module does not support RAID10."); return 0; @@ -1204,29 +1250,26 @@ static int _check_raid_parameters(struct volume_group *vg, unsigned devs = lcp->pv_count ? : dm_list_size(&vg->pvs); struct cmd_context *cmd = vg->cmd; - /* - * If number of devices was not supplied, we can infer from - * the PVs given. - */ if (!seg_is_mirrored(lp)) { if (!arg_count(cmd, stripes_ARG) && (devs > 2 * lp->segtype->parity_devs)) - lp->stripes = devs - lp->segtype->parity_devs; + lp->stripes = 2; /* Or stripe bomb with many devs given */ if (!lp->stripe_size) lp->stripe_size = find_config_tree_int(cmd, metadata_stripesize_CFG, NULL) * 2; - if (lp->stripes <= lp->segtype->parity_devs) { + if (lp->stripes < 2) { // <= lp->segtype->parity_devs) { log_error("Number of stripes must be at least %d for %s", lp->segtype->parity_devs + 1, lp->segtype->name); return 0; } - } else if (!strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + } else if (segtype_is_any_raid0(lp->segtype) || + segtype_is_raid10(lp->segtype)) { if (!arg_count(cmd, stripes_ARG)) lp->stripes = devs / lp->mirrors; if (lp->stripes < 2) { - log_error("Unable to create RAID10 LV," + log_error("Unable to create RAID(1)0 LV," " insufficient number of devices."); return 0; }

8 years, 10 months

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0 / 0

master - raid0 commit missed test/shell/lvconvert-striped-raid0.sh

by Heinz Mauelshagen

Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=d5c64f4b9bb748... Commit: d5c64f4b9bb748c46d7e3c052f1524eee4bb845e Parent: c2c0a029fe5fcb8585039073ca49c023d237a300 Author: Heinz Mauelshagen <heinzm(a)redhat.com> AuthorDate: Tue Jun 9 21:00:56 2015 +0200 Committer: Heinz Mauelshagen <heinzm(a)redhat.com> CommitterDate: Tue Jun 9 21:00:56 2015 +0200 raid0 commit missed test/shell/lvconvert-striped-raid0.sh --- test/shell/lvconvert-striped-raid0.sh | 73 +++++++++++++++++++++++++++++++++ 1 files changed, 73 insertions(+), 0 deletions(-) diff --git a/test/shell/lvconvert-striped-raid0.sh b/test/shell/lvconvert-striped-raid0.sh new file mode 100644 index 0000000..fb7c5a1 --- /dev/null +++ b/test/shell/lvconvert-striped-raid0.sh @@ -0,0 +1,73 @@ +#!/bin/sh +# Copyright (C) 2015 Red Hat, Inc. All rights reserved. +# +# This copyrighted material is made available to anyone wishing to use, +# modify, copy, or redistribute it subject to the terms and conditions +# of the GNU General Public License v.2. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +. lib/inittest + +######################################################## +# MAIN +######################################################## +aux have_raid 1 3 0 || skip + +aux prepare_pvs 6 20 # 6 devices for striped test +vgcreate -s 128k $vg $(cat DEVICES) + +############################################ +# Create striped LV, convert to raid0* tests +############################################ +# Create striped 6-way and cycle conversions +lvcreate -y -i 6 -l 50%FREE -n $lv1 $vg +lvconvert --type raid0 $vg/$lv1 +lvconvert --type raid0_meta $vg/$lv1 +lvconvert --type striped $vg/$lv1 +lvremove -ff $vg + +# Create raid0 5-way and cycle conversions +lvcreate -y --type raid0 -i 5 -l 50%FREE -n $lv1 $vg +lvconvert --type raid0_meta $vg/$lv1 +lvconvert --type striped $vg/$lv1 +lvconvert --type raid0 $vg/$lv1 +lvremove -ff $vg + +# Create raid0_meta 4-way and cycle conversions +lvcreate -y --type raid0_meta -i 4 -l 50%FREE -n $lv1 $vg +lvconvert --type raid0 $vg/$lv1 +lvconvert --type striped $vg/$lv1 +lvconvert --type raid0_meta $vg/$lv1 +lvremove -ff $vg + +# Create striped 3-way cosuming all vg space +lvcreate -y -i 3 -l 100%FREE -n $lv1 $vg +lvconvert --type raid0 $vg/$lv1 +not lvconvert --type raid0_meta $vg/$lv1 +lvconvert --type striped $vg/$lv1 +lvremove -ff $vg + +# Not enough drives +not lvcreate -y -i3 -l1 $vg "$dev1" "$dev2" +not lvcreate -y --type raid0 -i3 -l1 $vg "$dev1" "$dev2" +not lvcreate -y --type raid0_meta -i4 -l1 $vg "$dev1" "$dev2" "$dev3" + +# Create 2..6-way raid0 LV and cycle conversions +for s in $(seq 2..6) +do + lvcreate -y --type raid0 -l 95%FREE -i $s -n $lv1 $vg + lvconvert --type raid0_meta $vg/$lv1 + lvconvert --type raid0 $vg/$lv1 + lvconvert --type striped $vg/$lv1 + lvconvert --type raid0 $vg/$lv1 + lvconvert --type raid0_meta $vg/$lv1 + lvremove -ff $vg +done + +# Not enough drives for 7-way +not lvcreate -y --type raid0 -l 7 -i 7 -n $lv1 $vg + +vgremove -ff $vg

8 years, 10 months

1
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master - Add support for raid0/raid0_meta raid types

by Heinz Mauelshagen

Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=c2c0a029fe5fcb... Commit: c2c0a029fe5fcb8585039073ca49c023d237a300 Parent: fd29c7f3a171174dcd47eb8b23ff42a145cdacc6 Author: Heinz Mauelshagen <heinzm(a)redhat.com> AuthorDate: Tue Jun 9 19:56:02 2015 +0200 Committer: Heinz Mauelshagen <heinzm(a)redhat.com> CommitterDate: Tue Jun 9 19:56:02 2015 +0200 Add support for raid0/raid0_meta raid types Supports creation of raid types raid0 and raid0_meta with 'lvcreate --type (raid0|raid0_meta) ...' based on functionality available in dm-raid target version 1.0.7 The raid0 type provides access via the MD raid0 personality without metadata devices The raid0_meta type provides access via the MD raid0 personality _with_ metadata devices, i.e. it reserves space for rmeta devices which is e.g. useful for future functional enhancements supporting conversions between raid0 and raid4/5/6/10 to ensure metadata space on raid0_meta creation. Conversion between striped/raid0/raid0_meta LVs with striped LVs being restricted to one stripe zone (i.e. no varying stripes) is possible with 'lvconvert --type (striped|raid0|raid0_meta) ...' lvconvert-striped-raid0.sh provides various tests --- WHATS_NEW | 1 + daemons/lvmetad/Makefile.in | 3 +- daemons/lvmpolld/Makefile.in | 3 +- lib/activate/dev_manager.c | 14 +- lib/cache/lvmetad.c | 4 - lib/cache/lvmetad.h | 12 +- lib/config/defaults.h | 2 + lib/format_text/export.c | 6 +- lib/metadata/lv.c | 1 + lib/metadata/lv.h | 4 +- lib/metadata/lv_manip.c | 362 ++++++---- lib/metadata/merge.c | 2 +- lib/metadata/metadata-exported.h | 12 +- lib/metadata/raid_manip.c | 1483 +++++++++++++++++++++++++++++++------- lib/metadata/segtype.h | 133 +++- lib/raid/raid.c | 213 +++--- lib/uuid/uuid.c | 2 +- libdm/libdm-deptree.c | 70 ++- tools/lvchange.c | 2 +- tools/lvconvert.c | 60 +- tools/lvcreate.c | 75 ++- 21 files changed, 1843 insertions(+), 621 deletions(-) diff --git a/WHATS_NEW b/WHATS_NEW index bfcc094..db48233 100644 --- a/WHATS_NEW +++ b/WHATS_NEW @@ -8,6 +8,7 @@ Version 2.02.121 - Do not fail polling when poll LV not found (already finished or removed). Replace poll_get_copy_vg/lv fns with vg_read() and find_lv() in polldaemon. Close all device fds only in before sleep call in polldaemon. + Support for raid types raid0 and raid0_meta Version 2.02.120 - 15th May 2015 ================================ diff --git a/daemons/lvmetad/Makefile.in b/daemons/lvmetad/Makefile.in index 765128c..f9b997e 100644 --- a/daemons/lvmetad/Makefile.in +++ b/daemons/lvmetad/Makefile.in @@ -39,7 +39,8 @@ CFLAGS += $(EXTRA_EXEC_CFLAGS) lvmetad: $(OBJECTS) $(top_builddir)/libdaemon/client/libdaemonclient.a \ $(top_builddir)/libdaemon/server/libdaemonserver.a - $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) $(LVMLIBS) $(LIBS) + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) \ + $(DL_LIBS) $(LVMLIBS) $(LIBS) -rdynamic # TODO: No idea. No idea how to test either. #ifneq ("$(CFLOW_CMD)", "") diff --git a/daemons/lvmpolld/Makefile.in b/daemons/lvmpolld/Makefile.in index 8ebbb90..55f3dad 100644 --- a/daemons/lvmpolld/Makefile.in +++ b/daemons/lvmpolld/Makefile.in @@ -38,7 +38,8 @@ CFLAGS += $(DAEMON_CFLAGS) lvmpolld: $(OBJECTS) $(top_builddir)/libdaemon/client/libdaemonclient.a \ $(top_builddir)/libdaemon/server/libdaemonserver.a - $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) $(LVMLIBS) $(LIBS) + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) \ + $(DL_LIBS) $(LVMLIBS) $(LIBS) install_lvmpolld: lvmpolld $(INSTALL_PROGRAM) -D $< $(sbindir)/$(<F) diff --git a/lib/activate/dev_manager.c b/lib/activate/dev_manager.c index 1171f4c..38d76c4 100644 --- a/lib/activate/dev_manager.c +++ b/lib/activate/dev_manager.c @@ -2134,6 +2134,7 @@ static int _add_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, !_add_lv_to_dtree(dm, dtree, seg_lv(seg, s), 0)) return_0; if (seg_is_raid(seg) && + seg->meta_areas && seg_metalv(seg, s) && !_add_lv_to_dtree(dm, dtree, seg_metalv(seg, s), 0)) return_0; } @@ -2303,9 +2304,15 @@ int add_areas_line(struct dev_manager *dm, struct lv_segment *seg, return_0; continue; } - if (!(dlid = build_dm_uuid(dm->mem, seg_metalv(seg, s), NULL))) - return_0; - if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_metale(seg, s))) + + if (seg->meta_areas && seg_metalv(seg, s)) { + if (!(dlid = build_dm_uuid(dm->mem, seg_metalv(seg, s), NULL))) + return_0; + if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_metale(seg, s))) + return_0; + + /* One for metadata area */ + } else if (!dm_tree_node_add_null_area(node, 0)) return_0; if (!(dlid = build_dm_uuid(dm->mem, seg_lv(seg, s), NULL))) @@ -2632,6 +2639,7 @@ static int _add_segment_to_dtree(struct dev_manager *dm, laopts, NULL)) return_0; if (seg_is_raid(seg) && + seg->meta_areas && seg_metalv(seg, s) && !_add_new_lv_to_dtree(dm, dtree, seg_metalv(seg, s), laopts, NULL)) return_0; diff --git a/lib/cache/lvmetad.c b/lib/cache/lvmetad.c index dd1219b..73a382c 100644 --- a/lib/cache/lvmetad.c +++ b/lib/cache/lvmetad.c @@ -46,10 +46,6 @@ void lvmetad_init(struct cmd_context *cmd) if (!_lvmetad_use && !access(getenv("LVM_LVMETAD_PIDFILE") ? : LVMETAD_PIDFILE, F_OK)) log_warn("WARNING: lvmetad is running but disabled." " Restart lvmetad before enabling it!"); - - if (_lvmetad_connected) - log_debug(INTERNAL_ERROR "Refreshing lvmetad global handle while connection with the daemon is active"); - _lvmetad_cmd = cmd; } diff --git a/lib/cache/lvmetad.h b/lib/cache/lvmetad.h index 395bc41..6769f76 100644 --- a/lib/cache/lvmetad.h +++ b/lib/cache/lvmetad.h @@ -29,7 +29,8 @@ typedef int (*activation_handler) (struct cmd_context *cmd, #ifdef LVMETAD_SUPPORT /* - * Sets up a global handle for our process. + * Initialise the communication with lvmetad. Normally called by + * lvmcache_init. Sets up a global handle for our process. */ void lvmetad_init(struct cmd_context *); @@ -58,9 +59,7 @@ int lvmetad_socket_present(void); /* * Check whether lvmetad is active (where active means both that it is running - * and that we have a working connection with it). It opens new connection - * with lvmetad in the process when lvmetad is supposed to be used and the - * connection is not open yet. + * and that we have a working connection with it). */ int lvmetad_active(void); @@ -71,9 +70,8 @@ int lvmetad_active(void); void lvmetad_connect_or_warn(void); /* - * Drop connection to lvmetad. A subsequent lvmetad_connect_or_warn or - * lvmetad_active will re-establish the connection (possibly at a - * different socket path). + * Drop connection to lvmetad. A subsequent lvmetad_init() will re-establish + * the connection (possibly at a different socket path). */ void lvmetad_disconnect(void); diff --git a/lib/config/defaults.h b/lib/config/defaults.h index 6793d01..3b6a877 100644 --- a/lib/config/defaults.h +++ b/lib/config/defaults.h @@ -60,7 +60,9 @@ #define DEFAULT_MIRROR_LOG_FAULT_POLICY "allocate" #define DEFAULT_MIRROR_IMAGE_FAULT_POLICY "remove" #define DEFAULT_MIRROR_MAX_IMAGES 8 /* limited by kernel DM_KCOPYD_MAX_REGIONS */ +#define DEFAULT_RAID_MAX_IMAGES 64 /* limited by kernel failed devices bitfield in superblock (raid4/5/6 max 253) */ #define DEFAULT_RAID_FAULT_POLICY "warn" +#define DEFAULT_RAID_STRIPE_SIZE (64 * 2) #define DEFAULT_DMEVENTD_RAID_LIB "libdevmapper-event-lvm2raid.so" #define DEFAULT_DMEVENTD_MIRROR_LIB "libdevmapper-event-lvm2mirror.so" diff --git a/lib/format_text/export.c b/lib/format_text/export.c index 018772e..b340fc8 100644 --- a/lib/format_text/export.c +++ b/lib/format_text/export.c @@ -590,14 +590,14 @@ int out_areas(struct formatter *f, const struct lv_segment *seg, /* RAID devices are laid-out in metadata/data pairs */ if (!lv_is_raid_image(seg_lv(seg, s)) || - !lv_is_raid_metadata(seg_metalv(seg, s))) { + (seg->meta_areas && seg_metalv(seg, s) && !lv_is_raid_metadata(seg_metalv(seg, s)))) { log_error("RAID segment has non-RAID areas"); return 0; } outf(f, "\"%s\", \"%s\"%s", - seg_metalv(seg, s)->name, seg_lv(seg, s)->name, - (s == seg->area_count - 1) ? "" : ","); + (seg->meta_areas && seg_metalv(seg, s)) ? seg_metalv(seg, s)->name : "-", + seg_lv(seg, s)->name, (s == seg->area_count - 1) ? "" : ","); break; case AREA_UNASSIGNED: diff --git a/lib/metadata/lv.c b/lib/metadata/lv.c index 10ce906..5329b91 100644 --- a/lib/metadata/lv.c +++ b/lib/metadata/lv.c @@ -533,6 +533,7 @@ int lv_raid_image_in_sync(const struct logical_volume *lv) if ((seg = first_seg(lv))) raid_seg = get_only_segment_using_this_lv(seg->lv); + if (!raid_seg) { log_error("Failed to find RAID segment for %s", lv->name); return 0; diff --git a/lib/metadata/lv.h b/lib/metadata/lv.h index 4475085..3031196 100644 --- a/lib/metadata/lv.h +++ b/lib/metadata/lv.h @@ -35,8 +35,8 @@ struct logical_volume { int32_t major; int32_t minor; - uint64_t size; /* Sectors */ - uint32_t le_count; + uint64_t size; /* Sectors visible */ + uint32_t le_count; /* Logical extents visible */ uint32_t origin_count; uint32_t external_count; diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c index 1251a5d..729ec78 100644 --- a/lib/metadata/lv_manip.c +++ b/lib/metadata/lv_manip.c @@ -38,9 +38,6 @@ typedef enum { NEXT_AREA } area_use_t; -/* FIXME: remove RAID_METADATA_AREA_LEN macro after defining 'raid_log_extents'*/ -#define RAID_METADATA_AREA_LEN 1 - /* FIXME These ended up getting used differently from first intended. Refactor. */ /* Only one of A_CONTIGUOUS_TO_LVSEG, A_CLING_TO_LVSEG, A_CLING_TO_ALLOCED may be set */ #define A_CONTIGUOUS_TO_LVSEG 0x01 /* Must be contiguous to an existing segment */ @@ -115,6 +112,8 @@ enum { LV_TYPE_DATA, LV_TYPE_SPARE, LV_TYPE_VIRTUAL, + LV_TYPE_RAID0, + LV_TYPE_RAID0_META, LV_TYPE_RAID1, LV_TYPE_RAID10, LV_TYPE_RAID4, @@ -159,6 +158,8 @@ static const char *_lv_type_names[] = { [LV_TYPE_DATA] = "data", [LV_TYPE_SPARE] = "spare", [LV_TYPE_VIRTUAL] = "virtual", + [LV_TYPE_RAID0] = SEG_TYPE_NAME_RAID0, + [LV_TYPE_RAID0_META] = SEG_TYPE_NAME_RAID0_META, [LV_TYPE_RAID1] = SEG_TYPE_NAME_RAID1, [LV_TYPE_RAID10] = SEG_TYPE_NAME_RAID10, [LV_TYPE_RAID4] = SEG_TYPE_NAME_RAID4, @@ -776,7 +777,7 @@ int get_default_region_size(struct cmd_context *cmd) if (region_size & (region_size - 1)) { region_size = _round_down_pow2(region_size); - log_verbose("Reducing mirror region size to %u kiB (power of 2).", + log_verbose("Reducing region size to %u kiB (power of 2).", region_size / 2); } @@ -923,10 +924,13 @@ dm_percent_t copy_percent(const struct logical_volume *lv) uint32_t numerator = 0u, denominator = 0u; struct lv_segment *seg; + if (seg_is_any_raid0(first_seg(lv))) + return DM_PERCENT_INVALID; + dm_list_iterate_items(seg, &lv->segments) { denominator += seg->area_len; - /* FIXME Generalise name of 'extents_copied' field */ + /* FIXME Generalise name of 'extents_copied' field */ if ((seg_is_raid(seg) || seg_is_mirrored(seg)) && (seg->area_count > 1)) numerator += seg->extents_copied; @@ -934,7 +938,7 @@ dm_percent_t copy_percent(const struct logical_volume *lv) numerator += seg->area_len; } - return denominator ? dm_make_percent( numerator, denominator ) : 100.0; + return denominator ? dm_make_percent(numerator, denominator ) : 100.0; } /* @@ -971,6 +975,7 @@ struct lv_segment *alloc_lv_segment(const struct segment_type *segtype, } if (segtype_is_raid(segtype) && + !segtype_is_raid0(segtype) && !(seg->meta_areas = dm_pool_zalloc(mem, areas_sz))) { dm_pool_free(mem, seg); /* frees everything alloced since seg */ return_NULL; @@ -1003,6 +1008,24 @@ struct lv_segment *alloc_lv_segment(const struct segment_type *segtype, return seg; } +/* Round up @extents to next stripe boundary for number of @stripes */ +static uint32_t _round_to_stripe_boundary(struct logical_volume *lv, uint32_t extents, uint32_t stripes, int extend) +{ + uint32_t rest; + + if (!stripes) + return extents; + + /* Round up extents to stripe divisable amount */ + if ((rest = extents % stripes)) { + extents += extend ? stripes - rest : -rest; + log_print_unless_silent("Rounding up size to full stripe size %s", + display_size(lv->vg->cmd, extents * lv->vg->extent_size)); + } + + return extents; +} + struct lv_segment *alloc_snapshot_seg(struct logical_volume *lv, uint64_t status, uint32_t old_le_count) { @@ -1033,6 +1056,7 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t uint32_t area_reduction, int with_discard) { struct lv_segment *cache_seg; + struct logical_volume *lv = seg_lv(seg, s); if (seg_type(seg, s) == AREA_UNASSIGNED) return 1; @@ -1050,10 +1074,10 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t return 1; } - if (lv_is_mirror_image(seg_lv(seg, s)) || - lv_is_thin_pool_data(seg_lv(seg, s)) || - lv_is_cache_pool_data(seg_lv(seg, s))) { - if (!lv_reduce(seg_lv(seg, s), area_reduction)) + if (lv_is_mirror_image(lv) || + lv_is_thin_pool_data(lv) || + lv_is_cache_pool_data(lv)) { + if (!lv_reduce(lv, area_reduction)) return_0; /* FIXME: any upper level reporting */ return 1; } @@ -1067,33 +1091,28 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t return_0; } - if (lv_is_raid_image(seg_lv(seg, s))) { - /* - * FIXME: Use lv_reduce not lv_remove - * We use lv_remove for now, because I haven't figured out - * why lv_reduce won't remove the LV. - lv_reduce(seg_lv(seg, s), area_reduction); - */ - if (area_reduction != seg->area_len) { - log_error("Unable to reduce RAID LV - operation not implemented."); - return_0; - } else { - if (!lv_remove(seg_lv(seg, s))) { - log_error("Failed to remove RAID image %s", - seg_lv(seg, s)->name); - return 0; - } - } + if (lv_is_raid_image(lv)) { + if (seg->meta_areas) { + uint32_t meta_area_reduction; + struct logical_volume *mlv; + struct volume_group *vg = lv->vg; - /* Remove metadata area if image has been removed */ - if (area_reduction == seg->area_len) { - if (!lv_reduce(seg_metalv(seg, s), - seg_metalv(seg, s)->le_count)) { - log_error("Failed to remove RAID meta-device %s", - seg_metalv(seg, s)->name); + if (!(mlv = seg_metalv(seg, s))) return 0; - } + + meta_area_reduction = raid_rmeta_extents_delta(vg->cmd, lv->le_count, lv->le_count - area_reduction, + seg->region_size, vg->extent_size); + if (lv->le_count - area_reduction == 0) + meta_area_reduction = mlv->le_count; + + if (meta_area_reduction && + !lv_reduce(mlv, meta_area_reduction)) + return_0; /* FIXME: any upper level reporting */ } + + if (!lv_reduce(lv, area_reduction)) + return_0; /* FIXME: any upper level reporting */ + return 1; } @@ -1101,9 +1120,9 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t log_very_verbose("Remove %s:%" PRIu32 "[%" PRIu32 "] from " "the top of LV %s:%" PRIu32, seg->lv->name, seg->le, s, - seg_lv(seg, s)->name, seg_le(seg, s)); + lv->name, seg_le(seg, s)); - if (!remove_seg_from_segs_using_this_lv(seg_lv(seg, s), seg)) + if (!remove_seg_from_segs_using_this_lv(lv, seg)) return_0; seg_lv(seg, s) = NULL; seg_le(seg, s) = 0; @@ -1239,6 +1258,36 @@ static int _lv_segment_add_areas(struct logical_volume *lv, return 1; } +/* Return @area_len for @extents based on @seg's properties (e.g. striped, ...) */ +static uint32_t _area_len(struct lv_segment *seg, uint32_t extents, uint32_t *area_len) +{ + /* Caller must ensure exact divisibility */ + if (seg_is_striped(seg) || seg_is_striped_raid(seg)) { + uint32_t data_devs = seg->area_count - seg->segtype->parity_devs; + + if (seg_is_raid10(seg) && + data_devs > 1) { + if (data_devs % 2) { + log_error("raid10 data devices not divisible by 2"); + return 0; + } + + data_devs /= 2; + } + + if (extents % data_devs) { + /* HM FIXME: message not right for raid10 */ + log_error("Extents %" PRIu32 " not divisible by #stripes %" PRIu32, extents, data_devs); + return 0; + } + + *area_len = extents / data_devs; + } else + *area_len = extents; + + return 1; +} + /* * Reduce the size of an lv_segment. New size can be zero. */ @@ -1246,24 +1295,16 @@ static int _lv_segment_reduce(struct lv_segment *seg, uint32_t reduction) { uint32_t area_reduction, s; - /* Caller must ensure exact divisibility */ - if (seg_is_striped(seg)) { - if (reduction % seg->area_count) { - log_error("Segment extent reduction %" PRIu32 - " not divisible by #stripes %" PRIu32, - reduction, seg->area_count); - return 0; - } - area_reduction = (reduction / seg->area_count); - } else - area_reduction = reduction; + if (!_area_len(seg, reduction, &area_reduction)) + return 0; for (s = 0; s < seg->area_count; s++) if (!release_and_discard_lv_segment_area(seg, s, area_reduction)) return_0; - seg->len -= reduction; - seg->area_len -= area_reduction; + seg->len -= reduction; + seg->lv->size -= reduction * seg->lv->vg->extent_size; + seg->area_len -= seg_is_striped(seg) ? area_reduction : reduction; return 1; } @@ -1271,19 +1312,27 @@ static int _lv_segment_reduce(struct lv_segment *seg, uint32_t reduction) /* * Entry point for all LV reductions in size. */ +static uint32_t _calc_area_multiple(const struct segment_type *segtype, + const uint32_t area_count, + const uint32_t stripes); static int _lv_reduce(struct logical_volume *lv, uint32_t extents, int delete) { - struct lv_segment *seg; - uint32_t count = extents; + struct lv_segment *seg = first_seg(lv); + uint32_t count; uint32_t reduction; struct logical_volume *pool_lv; + if (seg_is_striped(seg) || seg_is_striped_raid(seg)) + extents = _round_to_stripe_boundary(lv, extents, _calc_area_multiple(seg->segtype, seg->area_count, 0), 0); + if (lv_is_merging_origin(lv)) { log_debug_metadata("Dropping snapshot merge of %s to removed origin %s.", find_snapshot(lv)->lv->name, lv->name); clear_snapshot_merge(lv); } + count = extents; + dm_list_iterate_back_items(seg, &lv->segments) { if (!count) break; @@ -1385,7 +1434,7 @@ int replace_lv_with_error_segment(struct logical_volume *lv) * that suggest it is anything other than "error". */ /* FIXME Check for other flags that need removing */ - lv->status &= ~(MIRROR|MIRRORED|PVMOVE|LOCKED); + lv->status &= ~(MIRROR|MIRRORED|RAID|RAID_IMAGE|RAID_META|PVMOVE|LOCKED); /* FIXME Check for any attached LVs that will become orphans e.g. mirror logs */ @@ -1434,11 +1483,12 @@ struct alloc_handle { struct dm_pool *mem; alloc_policy_t alloc; /* Overall policy */ - int approx_alloc; /* get as much as possible up to new_extents */ + int approx_alloc; /* get as much as possible up to new_extents */ uint32_t new_extents; /* Number of new extents required */ uint32_t area_count; /* Number of parallel areas */ - uint32_t parity_count; /* Adds to area_count, but not area_multiple */ + uint32_t parity_count; /* Adds to area_count, but not area_multiple */ uint32_t area_multiple; /* seg->len = area_len * area_multiple */ + uint32_t area_multiple_check; /* Check area_multiple in _allocate(); needed for striped image additions */ uint32_t log_area_count; /* Number of parallel logs */ uint32_t metadata_area_count; /* Number of parallel metadata areas */ uint32_t log_len; /* Length of log/metadata_area */ @@ -1483,29 +1533,28 @@ static uint32_t _calc_area_multiple(const struct segment_type *segtype, if (segtype_is_striped(segtype)) return area_count; - /* Parity RAID (e.g. RAID 4/5/6) */ - if (segtype_is_raid(segtype) && segtype->parity_devs) { + /* + * RAID10 - only has 2-way mirror right now. + * If we are to move beyond 2-way RAID10, then + * the 'stripes' argument will always need to + * be given. + */ + if (segtype_is_raid10(segtype)) + return stripes ?: area_count / 2; + + /* RAID0 and parity RAID (e.g. RAID 4/5/6) */ + if (segtype_is_striped_raid(segtype)) { /* * As articulated in _alloc_init, we can tell by * the area_count whether a replacement drive is * being allocated; and if this is the case, then * there is no area_multiple that should be used. */ + if (area_count <= segtype->parity_devs) return 1; - return area_count - segtype->parity_devs; - } - /* - * RAID10 - only has 2-way mirror right now. - * If we are to move beyond 2-way RAID10, then - * the 'stripes' argument will always need to - * be given. - */ - if (!strcmp(segtype->name, _lv_type_names[LV_TYPE_RAID10])) { - if (!stripes) - return area_count / 2; - return stripes; + return area_count - segtype->parity_devs; } /* Mirrored stripes */ @@ -1557,7 +1606,7 @@ static int _sufficient_pes_free(struct alloc_handle *ah, struct dm_list *pvms, { uint32_t area_extents_needed = (extents_still_needed - allocated) * ah->area_count / ah->area_multiple; uint32_t parity_extents_needed = (extents_still_needed - allocated) * ah->parity_count / ah->area_multiple; - uint32_t metadata_extents_needed = (ah->alloc_and_split_meta) ? 0 : ah->metadata_area_count * RAID_METADATA_AREA_LEN; /* One each */ + uint32_t metadata_extents_needed =ah->metadata_area_count * ah->log_len; uint32_t total_extents_needed = area_extents_needed + parity_extents_needed + metadata_extents_needed; uint32_t free_pes = pv_maps_size(pvms); @@ -1700,9 +1749,9 @@ static int _setup_alloced_segment(struct logical_volume *lv, uint64_t status, struct lv_segment *seg; area_multiple = _calc_area_multiple(segtype, area_count, 0); + extents = aa[0].len * area_multiple; - if (!(seg = alloc_lv_segment(segtype, lv, lv->le_count, - aa[0].len * area_multiple, + if (!(seg = alloc_lv_segment(segtype, lv, lv->le_count, extents, status, stripe_size, NULL, area_count, aa[0].len, 0u, region_size, 0u, NULL))) { @@ -1718,7 +1767,7 @@ static int _setup_alloced_segment(struct logical_volume *lv, uint64_t status, extents = aa[0].len * area_multiple; lv->le_count += extents; - lv->size += (uint64_t) extents *lv->vg->extent_size; + lv->size += (uint64_t) extents * lv->vg->extent_size; return 1; } @@ -1884,7 +1933,7 @@ static int _for_each_pv(struct cmd_context *cmd, struct logical_volume *lv, *max_seg_len = remaining_seg_len; area_multiple = _calc_area_multiple(seg->segtype, seg->area_count, 0); - area_len = remaining_seg_len / area_multiple ? : 1; + area_len = remaining_seg_len / (area_multiple ?: 1); /* For striped mirrors, all the areas are counted, through the mirror layer */ if (top_level_area_index == -1) @@ -2921,9 +2970,10 @@ static int _allocate(struct alloc_handle *ah, return 1; } - if (ah->area_multiple > 1 && + if (ah->area_multiple_check && + ah->area_multiple > 1 && (ah->new_extents - alloc_state.allocated) % ah->area_multiple) { - log_error("Number of extents requested (%d) needs to be divisible by %d.", + log_error("Number of extents requested (%u) needs to be divisible by %d.", ah->new_extents - alloc_state.allocated, ah->area_multiple); return 0; @@ -3075,6 +3125,7 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, struct dm_pool *mem, const struct segment_type *segtype, alloc_policy_t alloc, int approx_alloc, + int extend, uint32_t existing_extents, uint32_t new_extents, uint32_t mirrors, @@ -3102,10 +3153,9 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, size = sizeof(*ah); /* - * It is a requirement that RAID 4/5/6 are created with a number of - * stripes that is greater than the number of parity devices. (e.g - * RAID4/5 must have at least 2 stripes and RAID6 must have at least - * 3.) It is also a constraint that, when replacing individual devices + * It is a requirement that RAID 4/5/6 have to have at least 2 stripes. + * + * It is also a constraint that, when replacing individual devices * in a RAID 4/5/6 array, no more devices can be replaced than * there are parity devices. (Otherwise, there would not be enough * redundancy to maintain the array.) Understanding these two @@ -3116,12 +3166,18 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, * account for the extra parity devices because the array already * exists and they only want replacement drives. */ - parity_count = (area_count <= segtype->parity_devs) ? 0 : segtype->parity_devs; + + parity_count = extend ? segtype->parity_devs : 0; alloc_count = area_count + parity_count; - if (segtype_is_raid(segtype) && metadata_area_count) + if (segtype_is_raid(segtype) && metadata_area_count) { + if (metadata_area_count != alloc_count) { + log_error(INTERNAL_ERROR "Bad metadata_area_count"); + return 0; + } + /* RAID has a meta area for each device */ alloc_count *= 2; - else + } else /* mirrors specify their exact log count */ alloc_count += metadata_area_count; @@ -3159,30 +3215,29 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, * is calculated from. So, we must pass in the total count to get * a correct area_multiple. */ - ah->area_multiple = _calc_area_multiple(segtype, area_count + parity_count, stripes); + ah->area_multiple = _calc_area_multiple(segtype, area_count + segtype->parity_devs, stripes); + + ah->area_multiple_check = extend ? 1 : 0; + //FIXME: s/mirror_logs_separate/metadata_separate/ so it can be used by others? ah->mirror_logs_separate = find_config_tree_bool(cmd, allocation_mirror_logs_require_separate_pvs_CFG, NULL); - if (mirrors || stripes) - total_extents = new_extents; - else - total_extents = 0; + total_extents = new_extents; if (segtype_is_raid(segtype)) { if (metadata_area_count) { - if (metadata_area_count != area_count) - log_error(INTERNAL_ERROR - "Bad metadata_area_count"); - ah->metadata_area_count = area_count; - ah->alloc_and_split_meta = 1; - - ah->log_len = RAID_METADATA_AREA_LEN; - + ah->log_len = raid_rmeta_extents_delta(cmd, + existing_extents / ah->area_multiple, + (existing_extents + new_extents) / ah->area_multiple, + region_size, extent_size); + ah->metadata_area_count = metadata_area_count; + ah->alloc_and_split_meta = !!ah->log_len; /* * We need 'log_len' extents for each * RAID device's metadata_area */ - total_extents += (ah->log_len * ah->area_multiple); + total_extents += ah->log_len * (ah->area_multiple > 1 ? + area_count / (segtype_is_raid10(segtype) ? mirrors : 1) : 1); } else { ah->log_area_count = 0; ah->log_len = 0; @@ -3261,6 +3316,7 @@ struct alloc_handle *allocate_extents(struct volume_group *vg, alloc_policy_t alloc, int approx_alloc, struct dm_list *parallel_areas) { + int extend = lv ? 1 : 0; struct alloc_handle *ah; if (segtype_is_virtual(segtype)) { @@ -3286,7 +3342,7 @@ struct alloc_handle *allocate_extents(struct volume_group *vg, if (alloc >= ALLOC_INHERIT) alloc = vg->alloc; - if (!(ah = _alloc_init(vg->cmd, vg->vgmem, segtype, alloc, approx_alloc, + if (!(ah = _alloc_init(vg->cmd, vg->vgmem, segtype, alloc, approx_alloc, extend, lv ? lv->le_count : 0, extents, mirrors, stripes, log_count, vg->extent_size, region_size, parallel_areas))) @@ -3704,7 +3760,7 @@ static int _lv_insert_empty_sublvs(struct logical_volume *lv, return_0; /* Metadata LVs for raid */ - if (segtype_is_raid(segtype)) { + if (segtype_is_raid(segtype) && !segtype_is_raid0(segtype)) { if (dm_snprintf(img_name, len, "%s_rmeta_%u", lv->name, i) < 0) return_0; } else @@ -3732,23 +3788,23 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, { const struct segment_type *segtype; struct logical_volume *sub_lv, *meta_lv; - struct lv_segment *seg; + struct lv_segment *seg = first_seg(lv); uint32_t fa, s; - int clear_metadata = 0; + int clear_metadata = lv->le_count ? 0 : 1; - segtype = get_segtype_from_string(lv->vg->cmd, "striped"); + if (!(segtype = get_segtype_from_string(lv->vg->cmd, "striped"))) + return_0; /* * The component devices of a "striped" LV all go in the same * LV. However, RAID has an LV for each device - making the * 'stripes' and 'stripe_size' parameters meaningless. */ - if (seg_is_raid(first_seg(lv))) { + if (seg_is_raid(seg)) { stripes = 1; stripe_size = 0; } - seg = first_seg(lv); for (fa = first_area, s = 0; s < seg->area_count; s++) { if (is_temporary_mirror_layer(seg_lv(seg, s))) { if (!_lv_extend_layered_lv(ah, seg_lv(seg, s), extents, @@ -3767,13 +3823,10 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, } /* Extend metadata LVs only on initial creation */ - if (seg_is_raid(seg) && !lv->le_count) { - if (!seg->meta_areas) { - log_error("No meta_areas for RAID type"); - return 0; - } - - meta_lv = seg_metalv(seg, s); + if (seg_is_raid(seg) && + seg->meta_areas && + ah->log_len && + (meta_lv = seg_metalv(seg, s))) { if (!lv_add_segment(ah, fa + seg->area_count, 1, meta_lv, segtype, 0, meta_lv->status, 0)) { @@ -3781,14 +3834,16 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, meta_lv->name, lv->name); return 0; } - lv_set_visible(meta_lv); - clear_metadata = 1; + + if (clear_metadata) + lv_set_visible(meta_lv); } fa += stripes; } - if (clear_metadata) { + if (clear_metadata && + seg->meta_areas) { /* * We must clear the metadata areas upon creation. */ @@ -3833,20 +3888,33 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, } } + seg = first_seg(lv); seg->area_len += extents; seg->len += extents; lv->le_count += extents; lv->size += (uint64_t) extents * lv->vg->extent_size; + if (!vg_write(lv->vg) || !vg_commit(lv->vg)) + return_0; + + /* * The MD bitmap is limited to being able to track 2^21 regions. * The region_size must be adjusted to meet that criteria. */ - while (seg_is_raid(seg) && (seg->region_size < (lv->size / (1 << 21)))) { - seg->region_size *= 2; - log_very_verbose("Adjusting RAID region_size from %uS to %uS" - " to support large LV size", - seg->region_size/2, seg->region_size); + if (seg_is_striped_raid(seg) && !seg_is_any_raid0(seg)) { + int adjusted = 0; + + /* HM FIXME: make it larger than just to suit the LV size */ + while (seg->region_size < (lv->size / (1 << 21))) { + seg->region_size *= 2; + adjusted = 1; + } + + if (adjusted) + log_very_verbose("Adjusting RAID region_size from %uS to %uS" + " to support large LV size", + seg->region_size/2, seg->region_size); } return 1; @@ -3874,7 +3942,6 @@ int lv_extend(struct logical_volume *lv, struct alloc_handle *ah; uint32_t sub_lv_count; uint32_t old_extents; - uint32_t new_extents; /* Total logical size after extension. */ log_very_verbose("Adding segment of type %s to LV %s.", segtype->name, lv->name); @@ -3887,19 +3954,24 @@ int lv_extend(struct logical_volume *lv, */ /* FIXME Support striped metadata pool */ log_count = 1; - } else if (segtype_is_raid(segtype) && !lv->le_count) - log_count = mirrors * stripes; + } else if (segtype_is_striped(segtype) || segtype_is_striped_raid(segtype)) { + extents = _round_to_stripe_boundary(lv, extents, stripes, 1); + + /* Make sure metadata LVs are being extended as well */ + if (!segtype_is_striped(segtype) && !segtype_is_raid0(segtype)) + log_count = (mirrors ?: 1) * stripes + segtype->parity_devs; + + } + /* FIXME log_count should be 1 for mirrors */ + if (segtype_is_mirror(segtype)) + log_count = 1; if (!(ah = allocate_extents(lv->vg, lv, segtype, stripes, mirrors, log_count, region_size, extents, allocatable_pvs, alloc, approx_alloc, NULL))) return_0; - new_extents = ah->new_extents; - if (segtype_is_raid(segtype)) - new_extents -= ah->log_len * ah->area_multiple; - if (segtype_is_pool(segtype)) { if (!(r = create_pool(lv, segtype, ah, stripes, stripe_size))) stack; @@ -3928,7 +4000,7 @@ int lv_extend(struct logical_volume *lv, goto out; } - if (!(r = _lv_extend_layered_lv(ah, lv, new_extents - lv->le_count, 0, + if (!(r = _lv_extend_layered_lv(ah, lv, extents, 0, stripes, stripe_size))) goto_out; @@ -4116,7 +4188,7 @@ static int _for_each_sub_lv(struct logical_volume *lv, int skip_pools, return_0; } - if (!seg_is_raid(seg)) + if (!seg_is_raid(seg) || !seg->meta_areas) continue; /* RAID has meta_areas */ @@ -4781,7 +4853,10 @@ static int _lvresize_adjust_extents(struct cmd_context *cmd, struct logical_volu return 0; } - if (!strcmp(mirr_seg->segtype->name, _lv_type_names[LV_TYPE_RAID10])) { + if (!strcmp(mirr_seg->segtype->name, _lv_type_names[LV_TYPE_RAID0])) { + lp->stripes = mirr_seg->area_count; + lp->stripe_size = mirr_seg->stripe_size; + } else if (!strcmp(mirr_seg->segtype->name, _lv_type_names[LV_TYPE_RAID10])) { /* FIXME Warn if command line values are being overridden? */ lp->stripes = mirr_seg->area_count / seg_mirrors; lp->stripe_size = mirr_seg->stripe_size; @@ -4791,9 +4866,10 @@ static int _lvresize_adjust_extents(struct cmd_context *cmd, struct logical_volu /* FIXME We will need to support resize for metadata LV as well, * and data LV could be any type (i.e. mirror)) */ dm_list_iterate_items(seg, seg_mirrors ? &seg_lv(mirr_seg, 0)->segments : &lv->segments) { - /* Allow through "striped" and RAID 4/5/6/10 */ + /* Allow through "striped" and RAID 0/4/5/6/10 */ if (!seg_is_striped(seg) && (!seg_is_raid(seg) || seg_is_mirrored(seg)) && + strcmp(seg->segtype->name, _lv_type_names[LV_TYPE_RAID0]) && strcmp(seg->segtype->name, _lv_type_names[LV_TYPE_RAID10])) continue; @@ -5122,7 +5198,7 @@ static struct logical_volume *_lvresize_volume(struct cmd_context *cmd, log_error("Filesystem check failed."); return NULL; } - /* some filesystems supports online resize */ + /* some filesystems support online resize */ } /* FIXME forks here */ @@ -5497,8 +5573,8 @@ struct dm_list *build_parallel_areas_from_lv(struct logical_volume *lv, return_NULL; current_le = spvs->le + spvs->len; - raid_multiple = (seg->segtype->parity_devs) ? - seg->area_count - seg->segtype->parity_devs : 1; + raid_multiple = (seg_is_mirror(seg) || seg_is_raid1(seg)) ? 1 : + seg->area_count - seg->segtype->parity_devs; } while ((current_le * raid_multiple) < lv->le_count); if (create_single_list) { @@ -7034,14 +7110,16 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, return NULL; } - /* FIXME This will not pass cluster lock! */ - init_mirror_in_sync(lp->nosync); + if (!seg_is_any_raid0(lp)) { + /* FIXME: this will not pass cluster lock! */ + init_mirror_in_sync(lp->nosync); - if (lp->nosync) { - log_warn("WARNING: New %s won't be synchronised. " - "Don't read what you didn't write!", - lp->segtype->name); - status |= LV_NOTSYNCED; + if (lp->nosync) { + log_warn("WARNING: New %s won't be synchronised. " + "Don't read what you didn't write!", + lp->segtype->name); + status |= LV_NOTSYNCED; + } } lp->region_size = adjusted_mirror_region_size(vg->extent_size, @@ -7208,8 +7286,10 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, goto revert_new_lv; } } else if (seg_is_raid(lp)) { - first_seg(lv)->min_recovery_rate = lp->min_recovery_rate; - first_seg(lv)->max_recovery_rate = lp->max_recovery_rate; + if (!seg_is_any_raid0(first_seg(lv))) { + first_seg(lv)->min_recovery_rate = lp->min_recovery_rate; + first_seg(lv)->max_recovery_rate = lp->max_recovery_rate; + } } else if (seg_is_thin_pool(lp)) { first_seg(lv)->chunk_size = lp->chunk_size; first_seg(lv)->zero_new_blocks = lp->zero ? 1 : 0; diff --git a/lib/metadata/merge.c b/lib/metadata/merge.c index 7fd5a07..2b1c42d 100644 --- a/lib/metadata/merge.c +++ b/lib/metadata/merge.c @@ -412,7 +412,7 @@ int check_lv_segments(struct logical_volume *lv, int complete_vg) continue; if (lv == seg_lv(seg, s)) seg_found++; - if (seg_is_raid(seg) && (lv == seg_metalv(seg, s))) + if (seg_is_raid(seg) && seg->meta_areas && (lv == seg_metalv(seg, s))) seg_found++; } if (seg_is_replicator_dev(seg)) { diff --git a/lib/metadata/metadata-exported.h b/lib/metadata/metadata-exported.h index 0e52153..9ed411a 100644 --- a/lib/metadata/metadata-exported.h +++ b/lib/metadata/metadata-exported.h @@ -1109,6 +1109,9 @@ struct logical_volume *first_replicator_dev(const struct logical_volume *lv); /* -- metadata/replicator_manip.c */ /* ++ metadata/raid_manip.c */ +uint32_t raid_rmeta_extents_delta(struct cmd_context *cmd, + uint32_t rimage_extents_cur, uint32_t rimage_extents_new, + uint32_t region_size, uint32_t extent_size); int lv_is_raid_with_tracking(const struct logical_volume *lv); uint32_t lv_raid_image_count(const struct logical_volume *lv); int lv_raid_change_image_count(struct logical_volume *lv, @@ -1118,8 +1121,13 @@ int lv_raid_split(struct logical_volume *lv, const char *split_name, int lv_raid_split_and_track(struct logical_volume *lv, struct dm_list *splittable_pvs); int lv_raid_merge(struct logical_volume *lv); -int lv_raid_reshape(struct logical_volume *lv, - const struct segment_type *new_segtype); +int lv_raid_convert(struct logical_volume *lv, + const struct segment_type *new_segtype, + int yes, int force, + const unsigned image_count, + const unsigned stripes, + const unsigned new_stripe_size, + struct dm_list *allocate_pvs); int lv_raid_replace(struct logical_volume *lv, struct dm_list *remove_pvs, struct dm_list *allocate_pvs); int lv_raid_remove_missing(struct logical_volume *lv); diff --git a/lib/metadata/raid_manip.c b/lib/metadata/raid_manip.c index 64cfb3f..aa3e250 100644 --- a/lib/metadata/raid_manip.c +++ b/lib/metadata/raid_manip.c @@ -22,6 +22,14 @@ #include "lv_alloc.h" #include "lvm-string.h" +#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*a)) + +/* Return data images count for @total_rimages depending on @seg's type */ +static uint32_t _data_rimages_count(const struct lv_segment *seg, const uint32_t total_rimages) +{ + return total_rimages - seg->segtype->parity_devs; +} + static int _lv_is_raid_with_tracking(const struct logical_volume *lv, struct logical_volume **tracking) { @@ -75,6 +83,26 @@ static int _activate_sublv_preserving_excl(struct logical_volume *top_lv, } /* + * Deactivate and remove the LVs on @removal_lvs list from @vg + * + * Returns 1 on success or 0 on failure + */ +static int _deactivate_and_remove_lvs(struct volume_group *vg, struct dm_list *removal_lvs) +{ + struct lv_list *lvl; + + dm_list_iterate_items(lvl, removal_lvs) { + if (!deactivate_lv(vg->cmd, lvl->lv)) + return_0; + + if (!lv_remove(lvl->lv)) + return_0; + } + + return 1; +} + +/* * _raid_in_sync * @lv * @@ -87,6 +115,10 @@ static int _activate_sublv_preserving_excl(struct logical_volume *top_lv, static int _raid_in_sync(struct logical_volume *lv) { dm_percent_t sync_percent; + struct lv_segment *seg = first_seg(lv); + + if (seg_is_striped(seg) || seg_is_any_raid0(seg)) + return 1; if (!lv_raid_percent(lv, &sync_percent)) { log_error("Unable to determine sync status of %s/%s.", @@ -249,6 +281,24 @@ static int _clear_lvs(struct dm_list *lv_list) return 1; } +/* HM + * + * Check for maximum supported raid devices imposed by the kernel MD + * maximum device limits _and_ dm-raid superblock bitfield constraints + * + * Returns 1 on success or 0 on failure + */ +static int _check_max_raid_devices(uint32_t image_count) +{ + if (image_count > DEFAULT_RAID_MAX_IMAGES) { + log_error("Unable to handle arrays with more than %u devices", + DEFAULT_RAID_MAX_IMAGES); + return 0; + } + + return 1; +} + /* * _shift_and_rename_image_components * @seg: Top-level RAID segment @@ -361,277 +411,565 @@ static char *_generate_raid_name(struct logical_volume *lv, return name; } + /* - * Create an LV of specified type. Set visible after creation. - * This function does not make metadata changes. + * Eliminate the extracted LVs on @removal_lvs from @vg incl. vg write, commit and backup */ -static struct logical_volume *_alloc_image_component(struct logical_volume *lv, - const char *alt_base_name, - struct alloc_handle *ah, uint32_t first_area, - uint64_t type) +static int _eliminate_extracted_lvs(struct volume_group *vg, struct dm_list *removal_lvs) { - uint64_t status; - char img_name[NAME_LEN]; - const char *type_suffix; - struct logical_volume *tmp_lv; - const struct segment_type *segtype; + if (!removal_lvs || dm_list_empty(removal_lvs)) + return 1; - if (!ah) { - log_error(INTERNAL_ERROR - "Stand-alone %s area allocation not implemented", - (type == RAID_META) ? "metadata" : "data"); - return 0; - } + sync_local_dev_names(vg->cmd); - switch (type) { - case RAID_META: - type_suffix = "rmeta"; - break; - case RAID_IMAGE: - type_suffix = "rimage"; - break; - default: - log_error(INTERNAL_ERROR - "Bad type provided to _alloc_raid_component."); + if (!_deactivate_and_remove_lvs(vg, removal_lvs)) return 0; - } - if (dm_snprintf(img_name, sizeof(img_name), "%s_%s_%%d", - (alt_base_name) ? : lv->name, type_suffix) < 0) + if (!vg_write(vg) || !vg_commit(vg)) return_0; - status = LVM_READ | LVM_WRITE | LV_REBUILD | type; - if (!(tmp_lv = lv_create_empty(img_name, NULL, status, ALLOC_INHERIT, lv->vg))) { - log_error("Failed to allocate new raid component, %s.", img_name); - return 0; + if (!backup(vg)) + log_error("Backup of VG %s failed after removal of image component LVs", vg->name); + + return 1; +} + +/* + * _extract_image_component + * @seg + * @idx: The index in the areas array to remove + * @data: != 0 to extract data dev / 0 extract metadata_dev + * @extracted_lv: The displaced metadata/data LV + */ +static int _extract_image_component(struct lv_segment *seg, + uint64_t type, uint32_t idx, + struct logical_volume **extracted_lv) +{ + struct logical_volume *lv; + + switch (type) { + case RAID_META: + lv = seg_metalv(seg, idx); + seg_metalv(seg, idx) = NULL; + seg_metatype(seg, idx) = AREA_UNASSIGNED; + break; + case RAID_IMAGE: + lv = seg_lv(seg, idx); + seg_lv(seg, idx) = NULL; + seg_type(seg, idx) = AREA_UNASSIGNED; + break; + default: + log_error(INTERNAL_ERROR "Bad type provided to %s.", __func__); + return 0; } - if (!(segtype = get_segtype_from_string(lv->vg->cmd, "striped"))) + if (!lv) + return 0; + + log_very_verbose("Extracting image component %s from %s", lv->name, lvseg_name(seg)); + lv->status &= ~(type | RAID); + lv_set_visible(lv); + + /* release lv areas */ + if (!remove_seg_from_segs_using_this_lv(lv, seg)) return_0; - if (!lv_add_segment(ah, first_area, 1, tmp_lv, segtype, 0, status, 0)) { - log_error("Failed to add segment to LV, %s", img_name); - return 0; - } + if (!(lv->name = _generate_raid_name(lv, "extracted", -1))) + return_0; - lv_set_visible(tmp_lv); + if (!replace_lv_with_error_segment(lv)) + return_0; - return tmp_lv; + *extracted_lv = lv; + + return 1; } -static int _alloc_image_components(struct logical_volume *lv, - struct dm_list *pvs, uint32_t count, - struct dm_list *new_meta_lvs, - struct dm_list *new_data_lvs) +/* Remove sublvs fo @type from @lv starting at @idx and put them on @removal_lvs */ +static int _extract_image_component_list(struct lv_segment *seg, + uint64_t type, uint32_t idx, + struct dm_list *removal_lvs) { uint32_t s; - uint32_t region_size; - uint32_t extents; - struct lv_segment *seg = first_seg(lv); - const struct segment_type *segtype; - struct alloc_handle *ah; - struct dm_list *parallel_areas; + unsigned i; struct lv_list *lvl_array; - if (!(lvl_array = dm_pool_alloc(lv->vg->vgmem, - sizeof(*lvl_array) * count * 2))) - return_0; + if (idx >= seg->area_count) { + log_error(INTERNAL_ERROR "area index too large for segment"); + return 0; + } - if (!(parallel_areas = build_parallel_areas_from_lv(lv, 0, 1))) + if (!(lvl_array = dm_pool_alloc(seg_lv(seg, 0)->vg->vgmem, sizeof(*lvl_array) * (seg->area_count - idx)))) return_0; - if (seg_is_linear(seg)) - region_size = get_default_region_size(lv->vg->cmd); + for (i = 0, s = idx; s < seg->area_count; s++) { + if (!_extract_image_component(seg, type, s, &lvl_array[i].lv)) + return 0; + + dm_list_add(removal_lvs, &lvl_array[i].list); + i++; + } + + if (type == RAID_IMAGE) + seg->areas = NULL; else - region_size = seg->region_size; + seg->meta_areas = NULL; - if (seg_is_raid(seg)) - segtype = seg->segtype; - else if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_RAID1))) - return_0; + return 1; +} - /* - * The number of extents is based on the RAID type. For RAID1, - * each of the rimages is the same size - 'le_count'. However - * for RAID 4/5/6, the stripes add together (NOT including the parity - * devices) to equal 'le_count'. Thus, when we are allocating - * individual devies, we must specify how large the individual device - * is along with the number we want ('count'). - */ - extents = (segtype->parity_devs) ? - (lv->le_count / (seg->area_count - segtype->parity_devs)) : - lv->le_count; +/* Add new @lvs to @lv at @area_offset */ +static int _add_image_component_list(struct lv_segment *seg, int delete_from_list, + uint64_t lv_flags, struct dm_list *lvs, uint32_t area_offset) +{ + uint32_t s = area_offset; + struct lv_list *lvl, *tmp; - if (!(ah = allocate_extents(lv->vg, NULL, segtype, 0, count, count, - region_size, extents, pvs, - lv->alloc, 0, parallel_areas))) - return_0; + dm_list_iterate_items_safe(lvl, tmp, lvs) { + if (delete_from_list) + dm_list_del(&lvl->list); - for (s = 0; s < count; ++s) { - /* - * The allocation areas are grouped together. First - * come the rimage allocated areas, then come the metadata - * allocated areas. Thus, the metadata areas are pulled - * from 's + count'. - */ - if (!(lvl_array[s + count].lv = - _alloc_image_component(lv, NULL, ah, s + count, RAID_META))) { - alloc_destroy(ah); - return_0; - } - dm_list_add(new_meta_lvs, &(lvl_array[s + count].list)); + if (lv_flags & VISIBLE_LV) + lv_set_visible(lvl->lv); + else + lv_set_hidden(lvl->lv); - if (!(lvl_array[s].lv = - _alloc_image_component(lv, NULL, ah, s, RAID_IMAGE))) { - alloc_destroy(ah); - return_0; + if (lv_flags & LV_REBUILD) + lvl->lv->status |= LV_REBUILD; + else + lvl->lv->status &= ~LV_REBUILD; + + if (!set_lv_segment_area_lv(seg, s++, lvl->lv, 0 /* le */, + lvl->lv->status)) { + log_error("Failed to add sublv %s", lvl->lv->name); + return 0; } - dm_list_add(new_data_lvs, &(lvl_array[s].list)); } - alloc_destroy(ah); - return 1; } +/* Calculate absolute amount of metadata device extens based on @rimage_extents, @region_size and @extens_size */ +static uint32_t _raid_rmeta_extents(struct cmd_context *cmd, + uint32_t rimage_extents, uint32_t region_size, uint32_t extent_size) +{ + uint64_t bytes, regions, sectors; + + region_size = region_size ?: get_default_region_size(cmd); + regions = rimage_extents * extent_size / region_size; + + /* raid and bitmap superblocks + region bytes */ + bytes = 2 * 4096 + dm_div_up(regions, 8); + sectors = dm_div_up(bytes, 512); + + return dm_div_up(sectors, extent_size); +} + +/* + * Returns raid metadata device size _change_ in extents, algorithm from dm-raid ("raid" target) kernel code. + */ +uint32_t raid_rmeta_extents_delta(struct cmd_context *cmd, + uint32_t rimage_extents_cur, uint32_t rimage_extents_new, + uint32_t region_size, uint32_t extent_size) +{ + uint32_t rmeta_extents_cur = _raid_rmeta_extents(cmd, rimage_extents_cur, region_size, extent_size); + uint32_t rmeta_extents_new = _raid_rmeta_extents(cmd, rimage_extents_new, region_size, extent_size); + + /* Need minimum size on LV creation */ + if (!rimage_extents_cur) + return rmeta_extents_new; + + /* Need current size on LV deletion */ + if (!rimage_extents_new) + return rmeta_extents_cur; + + if (rmeta_extents_new == rmeta_extents_cur) + return 0; + + /* Extending/reducing... */ + return rmeta_extents_new > rmeta_extents_cur ? + rmeta_extents_new - rmeta_extents_cur : + rmeta_extents_cur - rmeta_extents_new; +} + + /* * _alloc_rmeta_for_lv * @lv * - * Allocate a RAID metadata device for the given LV (which is or will + * Allocate RAID metadata device for the given LV (which is or will * be the associated RAID data device). The new metadata device must * be allocated from the same PV(s) as the data device. */ +static struct logical_volume *_alloc_image_component(struct logical_volume *lv, + const char *alt_base_name, + struct alloc_handle *ah, uint32_t first_area, + uint64_t type); static int _alloc_rmeta_for_lv(struct logical_volume *data_lv, struct logical_volume **meta_lv) { + int r = 1; + char *p; struct dm_list allocatable_pvs; struct alloc_handle *ah; struct lv_segment *seg = first_seg(data_lv); - char *p, base_name[NAME_LEN]; dm_list_init(&allocatable_pvs); if (!seg_is_linear(seg)) { log_error(INTERNAL_ERROR "Unable to allocate RAID metadata " - "area for non-linear LV, %s", data_lv->name); + "area for non-linear LV, %s", data_lv->name); return 0; } - (void) dm_strncpy(base_name, data_lv->name, sizeof(base_name)); - if ((p = strstr(base_name, "_mimage_"))) + if ((p = strstr(data_lv->name, "_mimage_")) || + (p = strstr(data_lv->name, "_rimage_"))) *p = '\0'; if (!get_pv_list_for_lv(data_lv->vg->cmd->mem, data_lv, &allocatable_pvs)) { - log_error("Failed to build list of PVs for %s/%s", - data_lv->vg->name, data_lv->name); + log_error("Failed to build list of PVs for %s", display_lvname(data_lv)); return 0; } - if (!(ah = allocate_extents(data_lv->vg, NULL, seg->segtype, 0, 1, 0, - seg->region_size, - 1 /*RAID_METADATA_AREA_LEN*/, - &allocatable_pvs, data_lv->alloc, 0, NULL))) + if (!(ah = allocate_extents(data_lv->vg, NULL, seg->segtype, + 0, 1, 0, + seg->region_size, + _raid_rmeta_extents(data_lv->vg->cmd, data_lv->le_count, + seg->region_size, data_lv->vg->extent_size), + &allocatable_pvs, data_lv->alloc, 0, NULL))) return_0; - if (!(*meta_lv = _alloc_image_component(data_lv, base_name, ah, 0, RAID_META))) { - alloc_destroy(ah); - return_0; - } + if (!(*meta_lv = _alloc_image_component(data_lv, data_lv->name, ah, 0, RAID_META))) + r = 0; + + if (p) + *p = '_'; alloc_destroy(ah); + return r; +} + +/* + * Allocate metadata devs for all @new_data_devs and link them to list @new_meta_lvs + */ +static int _alloc_rmeta_devs_for_rimage_devs(struct logical_volume *lv, + struct dm_list *new_data_lvs, + struct dm_list *new_meta_lvs) +{ + uint32_t a = 0, raid_devs = 0; + struct dm_list *l; + struct lv_list *lvl, *lvl_array; + + dm_list_iterate(l, new_data_lvs) + raid_devs++; + + if (!raid_devs) + return 0; + + if (!(lvl_array = dm_pool_zalloc(lv->vg->vgmem, raid_devs * sizeof(*lvl_array)))) + return 0; + + dm_list_iterate_items(lvl, new_data_lvs) { + log_debug_metadata("Allocating new metadata LV for %s", + lvl->lv->name); + if (!_alloc_rmeta_for_lv(lvl->lv, &lvl_array[a].lv)) { + log_error("Failed to allocate metadata LV for %s in %s", + lvl->lv->name, lv->vg->name); + return 0; + } + + dm_list_add(new_meta_lvs, &lvl_array[a].list); + a++; + } + return 1; } -static int _raid_add_images(struct logical_volume *lv, - uint32_t new_count, struct dm_list *pvs) +/* + * Allocate metadata devs for all data devs of an LV + */ +static int _alloc_rmeta_devs_for_lv(struct logical_volume *lv, struct dm_list *meta_lvs) { - int rebuild_flag_cleared = 0; uint32_t s; - uint32_t old_count = lv_raid_image_count(lv); - uint32_t count = new_count - old_count; - uint64_t status_mask = -1; + struct lv_list *lvl_array; + struct dm_list data_lvs; struct lv_segment *seg = first_seg(lv); - struct dm_list meta_lvs, data_lvs; - struct lv_list *lvl; - struct lv_segment_area *new_areas; - if (lv->status & LV_NOTSYNCED) { - log_error("Can't add image to out-of-sync RAID LV:" - " use 'lvchange --resync' first."); + dm_list_init(&data_lvs); + + if (seg->meta_areas) { + log_error(INTERNAL_ERROR "Metadata LVs exists in %s", display_lvname(lv)); return 0; } - if (!_raid_in_sync(lv)) { - log_error("Can't add image to RAID LV that" - " is still initializing."); + if (!(seg->meta_areas = dm_pool_zalloc(lv->vg->vgmem, + seg->area_count * sizeof(*seg->meta_areas)))) return 0; - } - if (!archive(lv->vg)) + if (!(lvl_array = dm_pool_alloc(lv->vg->vgmem, seg->area_count * sizeof(*lvl_array)))) return_0; - dm_list_init(&meta_lvs); /* For image addition */ - dm_list_init(&data_lvs); /* For image addition */ + for (s = 0; s < seg->area_count; s++) { + lvl_array[s].lv = seg_lv(seg, s); + dm_list_add(&data_lvs, &lvl_array[s].list); + } - /* - * If the segtype is linear, then we must allocate a metadata - * LV to accompany it. - */ - if (seg_is_linear(seg)) { - /* A complete resync will be done, no need to mark each sub-lv */ - status_mask = ~(LV_REBUILD); + if (!_alloc_rmeta_devs_for_rimage_devs(lv, &data_lvs, meta_lvs)) { + log_error("Failed to allocate metadata LVs for %s", lv->name); + return 0; + } - if (!(lvl = dm_pool_alloc(lv->vg->vgmem, sizeof(*lvl)))) { - log_error("Memory allocation failed"); - return 0; - } + return 1; +} - if (!_alloc_rmeta_for_lv(lv, &lvl->lv)) - return_0; +/* + * Create an LV of specified type. Set visible after creation. + * This function does not make metadata changes. + */ +static struct logical_volume *_alloc_image_component(struct logical_volume *lv, const char *alt_base_name, + struct alloc_handle *ah, uint32_t first_area, + uint64_t type) +{ + uint64_t status = RAID | LVM_READ | LVM_WRITE | type; + char img_name[NAME_LEN]; + const char *type_suffix; + struct logical_volume *tmp_lv; + const struct segment_type *segtype; - dm_list_add(&meta_lvs, &lvl->list); - } else if (!seg_is_raid(seg)) { - log_error("Unable to add RAID images to %s of segment type %s", - lv->name, lvseg_name(seg)); - return 0; + switch (type) { + case RAID_META: + type_suffix = "rmeta"; + break; + case RAID_IMAGE: + type_suffix = "rimage"; + status |= LV_REBUILD; + break; + default: + log_error(INTERNAL_ERROR "Bad type provided to %s.", __func__); + return 0; } - if (!_alloc_image_components(lv, pvs, count, &meta_lvs, &data_lvs)) + if (dm_snprintf(img_name, sizeof(img_name), "%s_%s_%%d", + alt_base_name ?: lv->name, type_suffix) < 0) return_0; - /* - * If linear, we must correct data LV names. They are off-by-one - * because the linear volume hasn't taken its proper name of "_rimage_0" - * yet. This action must be done before '_clear_lvs' because it - * commits the LVM metadata before clearing the LVs. - */ - if (seg_is_linear(seg)) { - struct dm_list *l; - struct lv_list *lvl_tmp; - dm_list_iterate(l, &data_lvs) { - if (l == dm_list_last(&data_lvs)) { - lvl = dm_list_item(l, struct lv_list); - if (!(lvl->lv->name = _generate_raid_name(lv, "rimage", count))) - return_0; - continue; - } - lvl = dm_list_item(l, struct lv_list); - lvl_tmp = dm_list_item(l->n, struct lv_list); - lvl->lv->name = lvl_tmp->lv->name; - } + if (!(tmp_lv = lv_create_empty(img_name, NULL, status, ALLOC_INHERIT, lv->vg))) { + log_error("Failed to allocate new raid component, %s.", img_name); + return 0; } - /* Metadata LVs must be cleared before being added to the array */ - if (!_clear_lvs(&meta_lvs)) - goto fail; + /* If no allocation requested, leave it to the empty LV (needed for striped -> raid0 takeover) */ + if (ah) { + if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; - if (seg_is_linear(seg)) { - first_seg(lv)->status |= RAID_IMAGE; - if (!insert_layer_for_lv(lv->vg->cmd, lv, + if (!lv_add_segment(ah, first_area, 1, tmp_lv, segtype, 0, status, 0)) { + log_error("Failed to add segment to LV, %s", img_name); + return 0; + } + + first_seg(tmp_lv)->status |= SEG_RAID; + } + + lv_set_visible(tmp_lv); + + return tmp_lv; +} + +/* + * Create @count new image component pairs for @lv and return them in + * @new_meta_lvs and @new_data_lvs allocating space if @allocate is set. + * + * Use @pvs list for allocation if set, else just create empty image LVs. + */ +static int _alloc_image_components(struct logical_volume *lv, + struct dm_list *pvs, uint32_t count, + struct dm_list *meta_lvs, + struct dm_list *data_lvs) +{ + int r = 0; + uint32_t s, extents; + struct lv_segment *seg = first_seg(lv); + const struct segment_type *segtype; + struct alloc_handle *ah; + struct dm_list *parallel_areas; + struct lv_list *lvl_array; + + if (!meta_lvs && !data_lvs) + return 0; + + if (!(lvl_array = dm_pool_alloc(lv->vg->vgmem, 2 * count * sizeof(*lvl_array)))) + return_0; + + /* If this is an image addition to an existing raid set, use its type... */ + if (seg_is_raid(seg)) + segtype = seg->segtype; + + /* .. if not, set it to raid1 */ + else if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_RAID1))) + return_0; + + /* + * The number of extents is based on the RAID type. For RAID1/10, + * each of the rimages is the same size - 'le_count'. However + * for RAID 0/4/5/6, the stripes add together (NOT including the parity + * devices) to equal 'le_count'. Thus, when we are allocating + * individual devices, we must specify how large the individual device + * is along with the number we want ('count'). + */ + if (pvs) { + uint32_t stripes, mirrors, metadata_area_count = count; + + if (!(parallel_areas = build_parallel_areas_from_lv(lv, 0, 1))) + return_0; + + + /* Amount of extents for the rimage device(s) */ + if (segtype_is_striped_raid(seg->segtype)) { + stripes = count; + mirrors = 1; + extents = count * (lv->le_count / _data_rimages_count(seg, seg->area_count)); + + } else { + stripes = 1; + mirrors = count; + extents = lv->le_count; + } + + if (!(ah = allocate_extents(lv->vg, NULL, segtype, + stripes, mirrors, metadata_area_count, + seg->region_size, extents, + pvs, lv->alloc, 0, parallel_areas))) + return_0; + + } else + ah = NULL; + + for (s = 0; s < count; s++) { + /* + * The allocation areas are grouped together. First + * come the rimage allocated areas, then come the metadata + * allocated areas. Thus, the metadata areas are pulled + * from 's + count'. + */ + + /* + * If the segtype is raid0, we may avoid allocating metadata LVs + * to accompany the data LVs by not passing in @meta_lvs + */ + if (meta_lvs) { + if (!(lvl_array[s + count].lv = _alloc_image_component(lv, NULL, ah, s + count, RAID_META))) + goto_bad; + + dm_list_add(meta_lvs, &(lvl_array[s + count].list)); + } + + if (data_lvs) { + if (!(lvl_array[s].lv = _alloc_image_component(lv, NULL, ah, s, RAID_IMAGE))) + goto_bad; + + dm_list_add(data_lvs, &(lvl_array[s].list)); + } + } + + r = 1; +bad: + if (ah) + alloc_destroy(ah); + + return r; +} + +static int _raid_add_images(struct logical_volume *lv, + uint32_t new_count, struct dm_list *pvs) +{ + int rebuild_flag_cleared = 0; + uint32_t s; + uint32_t old_count = lv_raid_image_count(lv); + uint32_t count = new_count - old_count; + uint64_t status_mask = -1; + struct lv_segment *seg = first_seg(lv); + struct dm_list meta_lvs, data_lvs; + struct lv_list *lvl; + struct lv_segment_area *new_areas; + + if (lv->status & LV_NOTSYNCED) { + log_error("Can't add image to out-of-sync RAID LV:" + " use 'lvchange --resync' first."); + return 0; + } + + if (!_raid_in_sync(lv)) { + log_error("Can't add image to RAID LV that" + " is still initializing."); + return 0; + } + + if (!archive(lv->vg)) + return_0; + + dm_list_init(&meta_lvs); /* For image addition */ + dm_list_init(&data_lvs); /* For image addition */ + + /* + * If the segtype is linear, then we must allocate a metadata + * LV to accompany it. + */ + if (seg_is_linear(seg)) { + /* A complete resync will be done, no need to mark each sub-lv */ + status_mask = ~(LV_REBUILD); + + if (!(lvl = dm_pool_alloc(lv->vg->vgmem, sizeof(*lvl)))) { + log_error("Memory allocation failed"); + return 0; + } + + if (!_alloc_rmeta_for_lv(lv, &lvl->lv)) + return_0; + + dm_list_add(&meta_lvs, &lvl->list); + } else if (!seg_is_raid(seg)) { + log_error("Unable to add RAID images to %s of segment type %s", + lv->name, lvseg_name(seg)); + return 0; + } + + if (!_alloc_image_components(lv, pvs, count, &meta_lvs, &data_lvs)) + return_0; + + /* + * If linear, we must correct data LV names. They are off-by-one + * because the linear volume hasn't taken its proper name of "_rimage_0" + * yet. This action must be done before '_clear_lvs' because it + * commits the LVM metadata before clearing the LVs. + */ + if (seg_is_linear(seg)) { + struct dm_list *l; + struct lv_list *lvl_tmp; + + dm_list_iterate(l, &data_lvs) { + if (l == dm_list_last(&data_lvs)) { + lvl = dm_list_item(l, struct lv_list); + if (!(lvl->lv->name = _generate_raid_name(lv, "rimage", count))) + return_0; + continue; + } + lvl = dm_list_item(l, struct lv_list); + lvl_tmp = dm_list_item(l->n, struct lv_list); + lvl->lv->name = lvl_tmp->lv->name; + } + } + + /* Metadata LVs must be cleared before being added to the array */ + if (!_clear_lvs(&meta_lvs)) + goto fail; + + if (seg_is_linear(seg)) { + first_seg(lv)->status |= RAID_IMAGE; + if (!insert_layer_for_lv(lv->vg->cmd, lv, RAID | LVM_READ | LVM_WRITE, "_rimage_0")) return_0; @@ -1069,6 +1407,41 @@ int lv_raid_change_image_count(struct logical_volume *lv, return _raid_add_images(lv, new_count, pvs); } +/* + * Add/remove metadata areas to/from raid0 + * + * Update metadata and reload mappings if @update_and_reload + */ +static int _alloc_and_add_rmeta_devs_for_lv(struct logical_volume *lv) +{ + struct lv_segment *seg = first_seg(lv); + struct dm_list meta_lvs; + + dm_list_init(&meta_lvs); + + log_debug_metadata("Allocating metadata LVs for %s", display_lvname(lv)); + if (!_alloc_rmeta_devs_for_lv(lv, &meta_lvs)) { + log_error("Failed to allocate metadata LVs for %s", display_lvname(lv)); + return_0; + } + + /* Metadata LVs must be cleared before being added to the array */ + log_debug_metadata("Clearing newly allocated metadata LVs for %s", display_lvname(lv)); + if (!_clear_lvs(&meta_lvs)) { + log_error("Failed to initialize metadata LVs for %s", display_lvname(lv)); + return_0; + } + + /* Set segment areas for metadata sub_lvs */ + log_debug_metadata("Adding newly allocated metadata LVs to %s", display_lvname(lv)); + if (!_add_image_component_list(seg, 1, 0, &meta_lvs, 0)) { + log_error("Failed to add newly allocated metadata LVs to %s", display_lvname(lv)); + return_0; + } + + return 1; +} + int lv_raid_split(struct logical_volume *lv, const char *split_name, uint32_t new_count, struct dm_list *splittable_pvs) { @@ -1342,50 +1715,61 @@ int lv_raid_merge(struct logical_volume *image_lv) return 1; } -static int _convert_mirror_to_raid1(struct logical_volume *lv, - const struct segment_type *new_segtype) +/* + * Rename all data sub LVs of @lv to mirror + * or raid name depending on @direction + */ +enum mirror_raid_conv { mirror_to_raid1 = 0, raid1_to_mirror }; +static int _rename_data_lvs(struct logical_volume *lv, enum mirror_raid_conv direction) { uint32_t s; + char *p; struct lv_segment *seg = first_seg(lv); - struct lv_list lvl_array[seg->area_count], *lvl; - struct dm_list meta_lvs; - struct lv_segment_area *meta_areas; - char *new_name; + static struct { + char type_char; + uint64_t set_flag; + uint64_t reset_flag; + } conv[] = { + { 'r', RAID_IMAGE , MIRROR_IMAGE }, + { 'm', MIRROR_IMAGE, RAID_IMAGE } + }; - dm_list_init(&meta_lvs); + for (s = 0; s < seg->area_count; ++s) { + struct logical_volume *dlv = seg_lv(seg, s); - if (!_raid_in_sync(lv)) { - log_error("Unable to convert %s/%s while it is not in-sync", - lv->vg->name, lv->name); - return 0; - } + if (!((p = strstr(dlv->name, "_mimage_")) || + (p = strstr(dlv->name, "_rimage_")))) { + log_error(INTERNAL_ERROR "name lags image part"); + return 0; + } - if (!(meta_areas = dm_pool_zalloc(lv->vg->vgmem, - lv_mirror_count(lv) * sizeof(*meta_areas)))) { - log_error("Failed to allocate meta areas memory."); - return 0; + *(p+1) = conv[direction].type_char; + log_debug_metadata("data lv renamed to %s", dlv->name); + + dlv->status &= ~conv[direction].reset_flag; + dlv->status |= conv[direction].set_flag; } - if (!archive(lv->vg)) - return_0; + return 1; +} - for (s = 0; s < seg->area_count; s++) { - log_debug_metadata("Allocating new metadata LV for %s", - seg_lv(seg, s)->name); - if (!_alloc_rmeta_for_lv(seg_lv(seg, s), &(lvl_array[s].lv))) { - log_error("Failed to allocate metadata LV for %s in %s", - seg_lv(seg, s)->name, lv->name); - return 0; - } - dm_list_add(&meta_lvs, &(lvl_array[s].list)); - } +/* + * Convert @lv with "mirror" mapping to "raid1". + * + * Returns: 1 on success, 0 on failure + */ +static int _convert_mirror_to_raid1(struct logical_volume *lv, + const struct segment_type *new_segtype, + int update_and_reload) +{ + struct lv_segment *seg = first_seg(lv); - log_debug_metadata("Clearing newly allocated metadata LVs"); - if (!_clear_lvs(&meta_lvs)) { - log_error("Failed to initialize metadata LVs"); + if (!seg_is_mirrored(seg)) { + log_error(INTERNAL_ERROR "mirror conversion supported only"); return 0; } + /* Remove any mirror log */ if (seg->log_lv) { log_debug_metadata("Removing mirror log, %s", seg->log_lv->name); if (!remove_mirror_log(lv->vg->cmd, lv, NULL, 0)) { @@ -1394,85 +1778,674 @@ static int _convert_mirror_to_raid1(struct logical_volume *lv, } } - seg->meta_areas = meta_areas; - s = 0; + /* Allocate metadata devs for all mimage ones (writes+commits metadata) */ + if (!_alloc_and_add_rmeta_devs_for_lv(lv)) + return 0; - dm_list_iterate_items(lvl, &meta_lvs) { - log_debug_metadata("Adding %s to %s", lvl->lv->name, lv->name); + /* Rename all data sub lvs for "*_rimage_*" to "*_mimage_*" */ + if (!_rename_data_lvs(lv, mirror_to_raid1)) + return 0; - /* Images are known to be in-sync */ - lvl->lv->status &= ~LV_REBUILD; - first_seg(lvl->lv)->status &= ~LV_REBUILD; - lv_set_hidden(lvl->lv); + init_mirror_in_sync(1); - if (!set_lv_segment_area_lv(seg, s, lvl->lv, 0, - lvl->lv->status)) { - log_error("Failed to add %s to %s", - lvl->lv->name, lv->name); + log_debug_metadata("Setting new segtype and status of %s", display_lvname(lv)); + seg->segtype = new_segtype; + lv->status &= ~(MIRROR | MIRRORED); + lv->status |= RAID; + seg->status |= RAID; + + return update_and_reload ? lv_update_and_reload(lv) : 1; +} + +/* Begin: striped -> raid0 conversion */ +/* + * + * Helper: add/remove metadata areas to/from raid0 + * + * Update metadata and reload mappings if @update_and_reload + */ +static int _raid0_add_or_remove_metadata_lvs(struct logical_volume *lv, + int update_and_reload, + struct dm_list *removal_lvs) +{ + const char *raid_type; + struct lv_segment *seg = first_seg(lv); + + if (seg->meta_areas) { + log_debug_metadata("Extracting metadata LVs"); + if (!removal_lvs) { + log_error(INTERNAL_ERROR "Called with NULL removal LVs list"); return 0; } - s++; + + if (!_extract_image_component_list(seg, RAID_META, 0, removal_lvs)) { + log_error(INTERNAL_ERROR "Failed to extract metadata LVs"); + return 0; + } + + seg->meta_areas = NULL; + raid_type = SEG_TYPE_NAME_RAID0; + + } else { + if (!_alloc_and_add_rmeta_devs_for_lv(lv)) + return 0; + + raid_type = SEG_TYPE_NAME_RAID0_META; } - for (s = 0; s < seg->area_count; ++s) { - if (!(new_name = _generate_raid_name(lv, "rimage", s))) + if (!(seg->segtype = get_segtype_from_string(lv->vg->cmd, raid_type))) + return_0; + + if (update_and_reload) { + if (!lv_update_and_reload_origin(lv)) return_0; - log_debug_metadata("Renaming %s to %s", seg_lv(seg, s)->name, new_name); - seg_lv(seg, s)->name = new_name; - seg_lv(seg, s)->status &= ~MIRROR_IMAGE; - seg_lv(seg, s)->status |= RAID_IMAGE; + + /* If any residual LVs, eliminate them, write VG, commit it and take a backup */ + return _eliminate_extracted_lvs(lv->vg, removal_lvs); } - init_mirror_in_sync(1); - log_debug_metadata("Setting new segtype for %s", lv->name); - seg->segtype = new_segtype; - lv->status &= ~MIRROR; - lv->status &= ~MIRRORED; + return 1; +} + +/* + * Helper convert striped to raid0 + * + * For @lv, empty hidden LVs in @data_lvs have been created by the caller. + * + * All areas from @lv segments are being moved to new + * segments allocated with area_count=1 for @data_lvs. + * + * Returns: 1 on success, 0 on failure + */ +static int _striped_to_raid0_move_segs_to_raid0_lvs(struct logical_volume *lv, + struct dm_list *data_lvs) +{ + uint32_t s = 0, le; + struct logical_volume *dlv; + struct lv_segment *seg_from, *seg_new; + struct lv_list *lvl; + struct segment_type *segtype; + + if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + dm_list_iterate_items(lvl, data_lvs) { + dlv = lvl->lv; + le = 0; + dm_list_iterate_items(seg_from, &lv->segments) { + uint64_t status = RAID | SEG_RAID | (seg_from->status & (LVM_READ | LVM_WRITE)); + + /* Allocate a segment with one area for each segment in the striped LV */ + if (!(seg_new = alloc_lv_segment(segtype, dlv, + le, seg_from->area_len, + status, + seg_from->stripe_size, NULL, 1 /* area_count */, + seg_from->area_len, seg_from->chunk_size, + 0 /* region_size */, 0, NULL))) + return_0; + + seg_type(seg_new, 0) = AREA_UNASSIGNED; + dm_list_add(&dlv->segments, &seg_new->list); + le += seg_from->area_len; + + /* Move the respective area across to our new segment */ + if (!move_lv_segment_area(seg_new, 0, seg_from, s)) + return_0; + } + + /* Adjust le count and lv size */ + dlv->le_count = le; + dlv->size = (uint64_t) le * lv->vg->extent_size; + s++; + } + + /* Remove the empty segments from the striped LV */ + dm_list_init(&lv->segments); + + return 1; +} + +/* HM Helper: check that @lv has one stripe one, i.e. same stripe count in all of its segements */ +static int _lv_has_one_stripe_zone(struct logical_volume *lv) +{ + struct lv_segment *seg; + unsigned area_count = first_seg(lv)->area_count; + + dm_list_iterate_items(seg, &lv->segments) + if (seg->area_count != area_count) + return 0; + + return 1; +} + +/* + * Helper: convert striped to raid0 + * + * Inserts hidden LVs for all segments and the parallel areas in @lv and moves + * given segments and areas across. + * + * Optionally allocates metadata devs if @alloc_metadata_devs + * Optionally updates metadata and reloads mappings if @update_and_reload + * + * Returns: 1 on success, 0 on failure + */ +static struct lv_segment *_convert_striped_to_raid0(struct logical_volume *lv, + int alloc_metadata_devs, + int update_and_reload) +{ + struct lv_segment *seg = first_seg(lv), *raid0_seg; + unsigned area_count = seg->area_count; + struct segment_type *segtype; + struct dm_list data_lvs; + + if (!seg_is_striped(seg)) { + log_error(INTERNAL_ERROR "Cannot convert non-%s LV %s to %s", + SEG_TYPE_NAME_STRIPED, display_lvname(lv), SEG_TYPE_NAME_RAID0); + return NULL; + } + + /* Check for not (yet) supported varying area_count on multi-segment striped LVs */ + if (!_lv_has_one_stripe_zone(lv)) { + log_error("Cannot convert striped LV %s with varying stripe count to raid0", + display_lvname(lv)); + return NULL; + } + + if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_RAID0))) + return_NULL; + + /* Allocate empty rimage components */ + dm_list_init(&data_lvs); + if (!_alloc_image_components(lv, NULL, area_count, NULL, &data_lvs)) { + log_error("Failed to allocate empty image components for raid0 LV %s.", + display_lvname(lv)); + return_NULL; + } + + /* Move the AREA_PV areas across to the new rimage components; empties lv->segments */ + if (!_striped_to_raid0_move_segs_to_raid0_lvs(lv, &data_lvs)) { + log_error("Failed to insert linear LVs underneath %s.", display_lvname(lv)); + return_NULL; + } + + /* + * Allocate single segment to hold the image component + * areas based on the first data LVs properties derived + * from the first new raid0 LVs first segment + */ + seg = first_seg(dm_list_item(dm_list_first(&data_lvs), struct lv_list)->lv); + if (!(raid0_seg = alloc_lv_segment(segtype, lv, + 0 /* le */, lv->le_count /* len */, + seg->status, + seg->stripe_size, NULL /* log_lv */, + area_count, lv->le_count, seg->chunk_size, + 0 /* seg->region_size */, 0u /* extents_copied */ , + NULL /* pvmove_source_seg */))) { + log_error("Failed to allocate new raid0 segement for LV %s.", display_lvname(lv)); + return_NULL; + } + + /* Add new single raid0 segment to emptied LV segments list */ + dm_list_add(&lv->segments, &raid0_seg->list); + + /* Add data lvs to the top-level lvs segment; resets LV_REBUILD flag on them */ + if (!_add_image_component_list(raid0_seg, 1, 0, &data_lvs, 0)) + return NULL; + lv->status |= RAID; - seg->status |= RAID; - if (!lv_update_and_reload(lv)) + /* Allocate metadata lvs if requested */ + if (alloc_metadata_devs && !_raid0_add_or_remove_metadata_lvs(lv, 0, NULL)) + return NULL; + + if (update_and_reload && !lv_update_and_reload(lv)) + return NULL; + + return raid0_seg; +} +/* End: striped -> raid0 conversion */ + +/* Begin: raid0 -> striped conversion */ +/* HM Helper: walk the segment lvs of a segment @seg and find smallest area at offset @area_le */ +static uint32_t _smallest_segment_lvs_area(struct lv_segment *seg, uint32_t area_le) +{ + uint32_t r = ~0, s; + + /* Find smallest segment of each of the data image lvs at offset area_le */ + for (s = 0; s < seg->area_count; s++) { + struct lv_segment *seg1 = find_seg_by_le(seg_lv(seg, s), area_le); + + r = min(r, seg1->le + seg1->len - area_le); + } + + return r; +} + +/* HM Helper: Split segments in segment LVs in all areas of @seg at offset @area_le */ +static int _split_area_lvs_segments(struct lv_segment *seg, uint32_t area_le) +{ + uint32_t s; + + /* Make sure that there's segments starting at area_le in all data LVs */ + for (s = 0; s < seg->area_count; s++) + if (area_le < seg_lv(seg, s)->le_count) + if (!lv_split_segment(seg_lv(seg, s), area_le)) { + log_error(INTERNAL_ERROR "splitting data lv segment"); + return_0; + } + + return 1; +} + +/* HM Helper: allocate a new striped segment and add it to list @new_segments */ +static int _alloc_and_add_new_striped_segment(struct logical_volume *lv, + uint32_t le, uint32_t area_len, + struct dm_list *new_segments) +{ + struct lv_segment *seg = first_seg(lv), *new_seg; + struct segment_type *striped_segtype; + + if (!(striped_segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + /* Allocate a segment with seg->area_count areas */ + if (!(new_seg = alloc_lv_segment(striped_segtype, lv, le, area_len * seg->area_count, + seg->status & ~RAID, + seg->stripe_size, NULL, seg->area_count, + area_len, seg->chunk_size, 0, 0, NULL))) return_0; + dm_list_add(new_segments, &new_seg->list); + return 1; } /* - * lv_raid_reshape - * @lv - * @new_segtype + * All areas from @lv image component LV's segments are + * being split at "striped" compatible boundaries and + * moved to @new_segments allocated. * - * Convert an LV from one RAID type (or 'mirror' segtype) to another. + * The metadata+data component LVs are being mapped to an + * error target and linked to @removal_lvs for disposal + * by the caller. * * Returns: 1 on success, 0 on failure */ -int lv_raid_reshape(struct logical_volume *lv, - const struct segment_type *new_segtype) +static int _raid0_to_striped_retrieve_segments_and_lvs(struct logical_volume *lv, + struct dm_list *removal_lvs) +{ + uint32_t s, area_le, area_len, le; + struct lv_segment *data_seg, *seg = first_seg(lv), *seg_to; + struct dm_list new_segments; + + dm_list_init(&new_segments); + + /* + * Walk all segments of all data LVs splitting them up at proper boundaries + * and create the number of new striped segments we need to move them across + */ + area_le = le = 0; + while (le < lv->le_count) { + area_len = _smallest_segment_lvs_area(seg, area_le); + area_le += area_len; + + if (!_split_area_lvs_segments(seg, area_le) || + !_alloc_and_add_new_striped_segment(lv, le, area_len, &new_segments)) + return 0; + + le += area_len * seg->area_count; + } + + /* Now move the prepared split areas across to the new segments */ + area_le = 0; + dm_list_iterate_items(seg_to, &new_segments) { + for (s = 0; s < seg->area_count; s++) { + data_seg = find_seg_by_le(seg_lv(seg, s), area_le); + + /* Move the respective area across to our new segments area */ + if (!move_lv_segment_area(seg_to, s, data_seg, 0)) + return_0; + } + + /* Presumes all data LVs have equal size */ + area_le += data_seg->len; + } + + /* Extract any metadata LVs and the empty data LVs for disposal by the caller */ + if ((seg->meta_areas && !_extract_image_component_list(seg, RAID_META, 0, removal_lvs)) || + !_extract_image_component_list(seg, RAID_IMAGE, 0, removal_lvs)) + return_0; + + /* + * Remove the one segment holding the image component areas + * from the top-level LV, then add the new segments to it + */ + dm_list_del(&seg->list); + dm_list_splice(&lv->segments, &new_segments); + + return 1; +} + +/* + * HM + * + * Helper convert raid0 to striped + * + * Convert a RAID0 set to striped + * + * Returns: 1 on success, 0 on failure + * + * HM FIXME: check last_seg(lv)->reshape_len and reduce LV aprropriately + */ +static int _convert_raid0_to_striped(struct logical_volume *lv, + int update_and_reload, + struct dm_list *removal_lvs) +{ + /* Caller should ensure, but... */ + if (!seg_is_any_raid0(first_seg(lv))) { + log_error(INTERNAL_ERROR "Cannot convert non-%s LV %s to %s", + SEG_TYPE_NAME_RAID0, display_lvname(lv), SEG_TYPE_NAME_STRIPED); + return 0; + } + + /* Move the AREA_PV areas across to new top-level segments of type "striped" */ + if (!_raid0_to_striped_retrieve_segments_and_lvs(lv, removal_lvs)) { + log_error("Failed to retrieve raid0 segments from %s.", lv->name); + return_0; + } + + lv->status &= ~RAID; + + if (!(first_seg(lv)->segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + if (update_and_reload) { + if (!lv_update_and_reload(lv)) + return_0; + + /* Eliminate the residual LVs, write VG, commit it and take a backup */ + return _eliminate_extracted_lvs(lv->vg, removal_lvs); + } + + return 1; +} +/* End: raid0 -> striped conversion */ + +/****************************************************************************/ +/* Begin: various conversions between layers (aka MD takeover) */ +/* + * takeover function argument list definition + * + * All takeover functions and helper functions + * to support them have this list of arguments + */ +#define TAKEOVER_FN_ARGUMENTS \ + struct logical_volume *lv, \ + int yes, int force, \ + const struct segment_type *new_segtype, \ + unsigned new_image_count, \ + const unsigned new_stripes, \ + unsigned new_stripe_size, struct dm_list *allocate_pvs + +/* + * a matrix with types from -> types to holds + * takeover function pointers this prototype + */ +typedef int (*takeover_fn_t)(TAKEOVER_FN_ARGUMENTS); + +/* Return takeover function table index for @segtype */ +static int _takeover_fn_idx(const struct segment_type *segtype) +{ + static uint64_t _segtype_to_idx[] = { + SEG_AREAS_STRIPED, + SEG_MIRROR, + SEG_RAID0, + SEG_RAID0_META, + SEG_RAID1, + }; + unsigned r = ARRAY_SIZE(_segtype_to_idx); + + while (r-- > 0) + if (segtype->flags & _segtype_to_idx[r]) + return r; + + return -1; +} + +/* Macro to define raid takeover helper function header */ +#define TAKEOVER_FN(function_name) \ +static int function_name(TAKEOVER_FN_ARGUMENTS) + +/* + * noop and error takoover handler functions + * to allow for logging that an lv already + * has the requested type or that the requested + * conversion is not possible + */ +/* Noop takeover handler for @lv: logs that LV already is of the requested type */ +TAKEOVER_FN(_noop) +{ + log_warn("Logical volume %s already is of requested type %s", + display_lvname(lv), lvseg_name(first_seg(lv))); + + return 1; +} + +/* Error takeover handler for @lv: logs what's (im)possible to convert to (and mabye added later) */ +TAKEOVER_FN(_error) { struct lv_segment *seg = first_seg(lv); - if (!new_segtype) { - log_error(INTERNAL_ERROR "New segtype not specified"); + log_error("Converting the segment type for %s from %s to %s" + " is not supported.", display_lvname(lv), + lvseg_name(seg), new_segtype->name); + + return 0; +} + + +/* Striped -> raid0 */ +TAKEOVER_FN(_s_r0) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_striped_to_raid0(lv, 0 /* !alloc_metadata_devs */, 1 /* update_and_reload */) ? 1 : 0; +} + +/* Striped -> raid0_meta */ +TAKEOVER_FN(_s_r0m) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_striped_to_raid0(lv, 1 /* alloc_metadata_devs */, 1 /* update_and_reload */) ? 1 : 0; +} + +/* raid0 -> raid0_meta */ +TAKEOVER_FN(_r0_r0m) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _raid0_add_or_remove_metadata_lvs(lv, 1, NULL); +} + +/* raid0_meta -> raid0 */ +TAKEOVER_FN(_r0m_r0) +{ + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _raid0_add_or_remove_metadata_lvs(lv, 1, &removal_lvs); +} + +/* raid0_meta -> striped */ +TAKEOVER_FN(_r0m_s) +{ + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_raid0_to_striped(lv, 1, &removal_lvs); +} + +/* raid0 -> striped */ +TAKEOVER_FN(_r0_s) +{ + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + return _convert_raid0_to_striped(lv, 1, &removal_lvs); +} + +/* Mirror -> raid1 */ +TAKEOVER_FN(_m_r1) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_mirror_to_raid1(lv, new_segtype, 1); +} + +/* + * 2-dimensional takeover function matrix defining the + * FSM of possible/impossible or noop (i.e. requested + * conversion already given on the lv) conversions + * + * Rows define from segtype and columns to segtype + */ +static takeover_fn_t _takeover_fn[][5] = { + /* from |, to -> striped mirror raid0 raid0_meta raid1 */ + /* v */ + /* striped */ { _noop, _error, _s_r0, _s_r0m, _error }, + /* mirror */ { _error, _noop, _error, _error, _m_r1 }, + /* raid0 */ { _r0_s, _error, _noop, _r0_r0m, _error }, + /* raid0_meta */ { _r0m_s, _error, _r0m_r0, _noop, _error }, +}; + +/* End: various conversions between layers (aka MD takeover) */ +/****************************************************************************/ + +/* + * lv_raid_convert + * @lv + * @new_segtype + * + * Convert @lv from one RAID type (or 'mirror' segtype) to @new_segtype, + * change RAID algorithm (e.g. left symmetric to right asymmetric), + * add/remove LVs to/from a RAID LV or change stripe sectors + * + * Non dm-raid changes are factored in e.g. "mirror" and "striped" related + * fucntions called from here. + * All the rest of the raid <-> raid conversions go into a function + * _convert_raid_to_raid() of their own called from here. + * + * Returns: 1 on success, 0 on failure + */ +int lv_raid_convert(struct logical_volume *lv, + const struct segment_type *new_segtype, + int yes, int force, + unsigned new_image_count, + const unsigned new_stripes, + const unsigned new_stripe_size, + struct dm_list *allocate_pvs) + { + int from_idx, to_idx; + uint32_t stripes, stripe_size; + struct lv_segment *seg = first_seg(lv); + struct segment_type *striped_segtype; + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + if (!new_segtype) { + log_error(INTERNAL_ERROR "New segtype not specified"); + return 0; + } + + if (!(striped_segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + /* Given segtype of @lv */ + if (!seg_is_striped(seg) && /* Catches linear = "overloaded striped with one area" as well */ + !seg_is_mirror(seg) && + !seg_is_raid(seg)) + goto err; + + /* Requested segtype */ + if (!segtype_is_linear(new_segtype) && + !segtype_is_striped(new_segtype) && + !segtype_is_mirror(new_segtype) && + !segtype_is_raid(new_segtype)) + goto err; + + /* Define new image count if not passed in */ + new_image_count = new_image_count ?: seg->area_count; + + if (!_check_max_raid_devices(new_image_count)) + return 0; + + /* Define new stripe size if not passed in */ + stripe_size = new_stripe_size ?: seg->stripe_size; + stripes = new_stripes ?: _data_rimages_count(seg, seg->area_count); + + /* @lv has to be active to perform raid conversion operatons */ + if (!lv_is_active(lv)) { + log_error("%s must be active to perform this operation.", + display_lvname(lv)); return 0; } - if (vg_is_clustered(lv->vg) && !lv_is_active_exclusive_locally(lv)) { - log_error("%s/%s must be active exclusive locally to" - " perform this operation.", lv->vg->name, lv->name); + /* If clustered VG, @lv has to be active locally */ + if (vg_is_clustered(lv->vg) && !lv_is_active_exclusive_locally(lv)) { + log_error("%s must be active exclusive locally to" + " perform this operation.", display_lvname(lv)); + return 0; + } + + /* Can't perfom any raid conversions on out of sync LVs */ + if (!_raid_in_sync(lv)) { + log_error("Unable to convert %s while it is not in-sync", + display_lvname(lv)); return 0; } - if (!strcmp(seg->segtype->name, "mirror") && - (!strcmp(new_segtype->name, SEG_TYPE_NAME_RAID1))) - return _convert_mirror_to_raid1(lv, new_segtype); + /* + * Table driven takeover, i.e. conversions from one segment type to another + */ + from_idx = _takeover_fn_idx(seg->segtype); + to_idx = _takeover_fn_idx(new_segtype); + if ((from_idx < 0 || to_idx < 0) || + !_takeover_fn[from_idx][to_idx](lv, yes, force, new_segtype, new_image_count, + stripes, stripe_size, allocate_pvs)) + goto err; + + log_print_unless_silent("Logical volume %s successfully converted", display_lvname(lv)); + return 1; - log_error("Converting the segment type for %s/%s from %s to %s" - " is not yet supported.", lv->vg->name, lv->name, +err: + /* FIXME: enhance message */ + log_error("Converting the segment type for %s from %s to %s" + " is not supported.", display_lvname(lv), lvseg_name(seg), new_segtype->name); return 0; } - static int _remove_partial_multi_segment_image(struct logical_volume *lv, struct dm_list *remove_pvs) { diff --git a/lib/metadata/segtype.h b/lib/metadata/segtype.h index 4b2df78..ff2b3fc 100644 --- a/lib/metadata/segtype.h +++ b/lib/metadata/segtype.h @@ -1,6 +1,6 @@ /* * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. - * Copyright (C) 2004-2010 Red Hat, Inc. All rights reserved. + * Copyright (C) 2004-2015 Red Hat, Inc. All rights reserved. * * This file is part of LVM2. * @@ -28,28 +28,51 @@ struct dm_config_node; struct dev_manager; /* Feature flags */ -#define SEG_CAN_SPLIT 0x00000001U -#define SEG_AREAS_STRIPED 0x00000002U -#define SEG_AREAS_MIRRORED 0x00000004U -#define SEG_SNAPSHOT 0x00000008U -#define SEG_FORMAT1_SUPPORT 0x00000010U -#define SEG_VIRTUAL 0x00000020U -#define SEG_CANNOT_BE_ZEROED 0x00000040U -#define SEG_MONITORED 0x00000080U -#define SEG_REPLICATOR 0x00000100U -#define SEG_REPLICATOR_DEV 0x00000200U -#define SEG_RAID 0x00000400U -#define SEG_THIN_POOL 0x00000800U -#define SEG_THIN_VOLUME 0x00001000U -#define SEG_CACHE 0x00002000U -#define SEG_CACHE_POOL 0x00004000U -#define SEG_MIRROR 0x00008000U -#define SEG_ONLY_EXCLUSIVE 0x00010000U /* In cluster only exlusive activation */ -#define SEG_CAN_ERROR_WHEN_FULL 0x00020000U -#define SEG_UNKNOWN 0x80000000U +#define SEG_CAN_SPLIT 0x0000000000000001U +#define SEG_AREAS_STRIPED 0x0000000000000002U +#define SEG_AREAS_MIRRORED 0x0000000000000004U +#define SEG_SNAPSHOT 0x0000000000000008U +#define SEG_FORMAT1_SUPPORT 0x0000000000000010U +#define SEG_VIRTUAL 0x0000000000000020U +#define SEG_CANNOT_BE_ZEROED 0x0000000000000040U +#define SEG_MONITORED 0x0000000000000080U +#define SEG_REPLICATOR 0x0000000000000100U +#define SEG_REPLICATOR_DEV 0x0000000000000200U +#define SEG_RAID 0x0000000000000400U +#define SEG_THIN_POOL 0x0000000000000800U +#define SEG_THIN_VOLUME 0x0000000000001000U +#define SEG_CACHE 0x0000000000002000U +#define SEG_CACHE_POOL 0x0000000000004000U +#define SEG_MIRROR 0x0000000000008000U +#define SEG_ONLY_EXCLUSIVE 0x0000000000010000U /* In cluster only exlusive activation */ +#define SEG_CAN_ERROR_WHEN_FULL 0x0000000000020000U + +#define SEG_RAID0 0x0000000000040000U +#define SEG_RAID0_META 0x0000000000080000U +#define SEG_RAID1 0x0000000000100000U +#define SEG_RAID10 0x0000000000200000U +#define SEG_RAID4 0x0000000000400000U +#define SEG_RAID5_N 0x0000000000800000U +#define SEG_RAID5_LA 0x0000000001000000U +#define SEG_RAID5_LS 0x0000000002000000U +#define SEG_RAID5_RA 0x0000000004000000U +#define SEG_RAID5_RS 0x0000000008000000U +#define SEG_RAID5 SEG_RAID5_LS +#define SEG_RAID6_NC 0x0000000010000000U +#define SEG_RAID6_NR 0x0000000020000000U +#define SEG_RAID6_ZR 0x0000000040000000U +#define SEG_RAID6_LA_6 0x0000000080000000U +#define SEG_RAID6_LS_6 0x0000000100000000U +#define SEG_RAID6_RA_6 0x0000000200000000U +#define SEG_RAID6_RS_6 0x0000000400000000U +#define SEG_RAID6_N_6 0x0000000800000000U +#define SEG_RAID6 SEG_RAID6_ZR + +#define SEG_UNKNOWN 0x8000000000000000U #define segtype_is_cache(segtype) ((segtype)->flags & SEG_CACHE ? 1 : 0) #define segtype_is_cache_pool(segtype) ((segtype)->flags & SEG_CACHE_POOL ? 1 : 0) +#define segtype_is_linear(segtype) (!strcmp(segtype->name, "linear")) #define segtype_is_mirrored(segtype) ((segtype)->flags & SEG_AREAS_MIRRORED ? 1 : 0) #define segtype_is_mirror(segtype) ((segtype)->flags & SEG_MIRROR ? 1 : 0) #define segtype_is_pool(segtype) ((segtype)->flags & (SEG_CACHE_POOL | SEG_THIN_POOL) ? 1 : 0) @@ -86,7 +109,7 @@ struct dev_manager; struct segment_type { struct dm_list list; /* Internal */ - uint32_t flags; + uint64_t flags; uint32_t parity_devs; /* Parity drives required by segtype */ struct segtype_handler *ops; @@ -139,6 +162,8 @@ struct segtype_handler { struct segment_type *get_segtype_from_string(struct cmd_context *cmd, const char *str); +struct segment_type *get_segtype_from_flag(struct cmd_context *cmd, + uint64_t flag); struct segtype_library; int lvm_register_segtype(struct segtype_library *seglib, @@ -152,23 +177,65 @@ struct segment_type *init_unknown_segtype(struct cmd_context *cmd, const char *name); #define RAID_FEATURE_RAID10 (1U << 0) /* version 1.3 */ +#define RAID_FEATURE_RAID0 (1U << 1) /* version 1.7 */ +#define RAID_FEATURE_RESHAPING (1U << 2) /* version 1.8 */ #ifdef RAID_INTERNAL int init_raid_segtypes(struct cmd_context *cmd, struct segtype_library *seglib); #endif -#define SEG_TYPE_NAME_RAID1 "raid1" -#define SEG_TYPE_NAME_RAID10 "raid10" -#define SEG_TYPE_NAME_RAID4 "raid4" -#define SEG_TYPE_NAME_RAID5 "raid5" -#define SEG_TYPE_NAME_RAID5_LA "raid5_la" -#define SEG_TYPE_NAME_RAID5_LS "raid5_ls" -#define SEG_TYPE_NAME_RAID5_RA "raid5_ra" -#define SEG_TYPE_NAME_RAID5_RS "raid5_rs" -#define SEG_TYPE_NAME_RAID6 "raid6" -#define SEG_TYPE_NAME_RAID6_NC "raid6_nc" -#define SEG_TYPE_NAME_RAID6_NR "raid6_nr" -#define SEG_TYPE_NAME_RAID6_ZR "raid6_zr" +#define SEG_TYPE_NAME_MIRROR "mirror" + +/* RAID specific seg and segtype checks */ +#define SEG_TYPE_NAME_LINEAR "linear" +#define SEG_TYPE_NAME_STRIPED "striped" + +#define SEG_TYPE_NAME_RAID0 "raid0" +#define SEG_TYPE_NAME_RAID0_META "raid0_meta" +#define SEG_TYPE_NAME_RAID1 "raid1" +#define SEG_TYPE_NAME_RAID10 "raid10" +#define SEG_TYPE_NAME_RAID4 "raid4" +#define SEG_TYPE_NAME_RAID5 "raid5" +#define SEG_TYPE_NAME_RAID5_LA "raid5_la" +#define SEG_TYPE_NAME_RAID5_LS "raid5_ls" +#define SEG_TYPE_NAME_RAID5_RA "raid5_ra" +#define SEG_TYPE_NAME_RAID5_RS "raid5_rs" +#define SEG_TYPE_NAME_RAID6 "raid6" +#define SEG_TYPE_NAME_RAID6_NC "raid6_nc" +#define SEG_TYPE_NAME_RAID6_NR "raid6_nr" +#define SEG_TYPE_NAME_RAID6_ZR "raid6_zr" + +#define segtype_is_raid0(segtype) (((segtype)->flags & SEG_RAID0) ? 1 : 0) +#define segtype_is_raid0_meta(segtype) (((segtype)->flags & SEG_RAID0_META) ? 1 : 0) +#define segtype_is_any_raid0(segtype) (((segtype)->flags & (SEG_RAID0|SEG_RAID0_META)) ? 1 : 0) +#define segtype_is_raid1(segtype) (((segtype)->flags & SEG_RAID1) ? 1 : 0) +#define segtype_is_raid10(segtype) (((segtype)->flags & SEG_RAID10) ? 1 : 0) +#define segtype_is_raid4(segtype) (((segtype)->flags & SEG_RAID4) ? 1 : 0) +#define segtype_is_raid5_ls(segtype) (((segtype)->flags & SEG_RAID5_LS) ? 1 : 0) +#define segtype_is_raid5_rs(segtype) (((segtype)->flags & SEG_RAID5_RS) ? 1 : 0) +#define segtype_is_raid5_la(segtype) (((segtype)->flags & SEG_RAID5_LA) ? 1 : 0) +#define segtype_is_raid5_ra(segtype) (((segtype)->flags & SEG_RAID5_RA) ? 1 : 0) +#define segtype_is_any_raid5(segtype) (((segtype)->flags & \ + (SEG_RAID5_LS|SEG_RAID5_LA|SEG_RAID5_RS|SEG_RAID5_RA|SEG_RAID5_N)) ? 1 : 0) +#define segtype_is_raid6_zr(segtype) (((segtype)->flags & SEG_RAID6_ZR) ? 1 : 0) +#define segtype_is_raid6_nc(segtype) (((segtype)->flags & SEG_RAID6_NC) ? 1 : 0) +#define segtype_is_raid6_nr(segtype) (((segtype)->flags & SEG_RAID6_NR) ? 1 : 0) +#define segtype_is_striped_raid(segtype) (segtype_is_raid(segtype) && !segtype_is_raid1(segtype)) + +#define seg_is_raid0(seg) segtype_is_raid0((seg)->segtype) +#define seg_is_raid0_meta(seg) segtype_is_raid0_meta((seg)->segtype) +#define seg_is_any_raid0(seg) segtype_is_any_raid0((seg)->segtype) +#define seg_is_raid1(seg) segtype_is_raid1((seg)->segtype) +#define seg_is_raid10(seg) segtype_is_raid10((seg)->segtype) +#define seg_is_raid4(seg) segtype_is_raid4((seg)->segtype) +#define seg_is_raid5_ls(seg) segtype_is_raid5_ls((seg)->segtype) +#define seg_is_raid5_rs(seg) segtype_is_raid5_rs((seg)->segtype) +#define seg_is_raid5_la(seg) segtype_is_raid5_la((seg)->segtype) +#define seg_is_raid5_ra(seg) segtype_is_raid5_ra((seg)->segtype) +#define seg_is_raid6_zr(seg) segtype_is_raid6_zr((seg)->segtype) +#define seg_is_raid6_nc(seg) segtype_is_raid6_nc((seg)->segtype) +#define seg_is_raid6_nr(seg) segtype_is_raid6_nr((seg)->segtype) +#define seg_is_striped_raid(seg) segtype_is_striped_raid((seg)->segtype) #ifdef REPLICATOR_INTERNAL int init_replicator_segtype(struct cmd_context *cmd, struct segtype_library *seglib); diff --git a/lib/raid/raid.c b/lib/raid/raid.c index 39e3a06..9a8e1b0 100644 --- a/lib/raid/raid.c +++ b/lib/raid/raid.c @@ -34,8 +34,9 @@ static void _raid_display(const struct lv_segment *seg) display_stripe(seg, s, " "); } - for (s = 0; s < seg->area_count; ++s) - log_print(" Raid Metadata LV%2d\t%s", s, seg_metalv(seg, s)->name); + if (seg->meta_areas) + for (s = 0; s < seg->area_count; ++s) + log_print(" Raid Metadata LV%2d\t%s", s, seg_metalv(seg, s)->name); log_print(" "); } @@ -43,8 +44,9 @@ static void _raid_display(const struct lv_segment *seg) static int _raid_text_import_area_count(const struct dm_config_node *sn, uint32_t *area_count) { - if (!dm_config_get_uint32(sn, "device_count", area_count)) { - log_error("Couldn't read 'device_count' for " + if (!dm_config_get_uint32(sn, "device_count", area_count) && + !dm_config_get_uint32(sn, "stripe_count", area_count)) { + log_error("Couldn't read '(devicei|stripe)_count' for " "segment '%s'.", dm_config_parent_name(sn)); return 0; } @@ -56,7 +58,7 @@ static int _raid_text_import_areas(struct lv_segment *seg, const struct dm_config_value *cv) { unsigned int s; - struct logical_volume *lv1; + struct logical_volume *lv; const char *seg_name = dm_config_parent_name(sn); if (!seg->area_count) { @@ -70,29 +72,33 @@ static int _raid_text_import_areas(struct lv_segment *seg, return 0; } - if (!cv->next) { - log_error("Missing data device in areas array for segment %s.", seg_name); - return 0; - } - - /* Metadata device comes first */ - if (!(lv1 = find_lv(seg->lv->vg, cv->v.str))) { - log_error("Couldn't find volume '%s' for segment '%s'.", - cv->v.str ? : "NULL", seg_name); - return 0; - } - if (!set_lv_segment_area_lv(seg, s, lv1, 0, RAID_META)) + /* Metadata device comes first unless RAID0 optionally w/o metadata dev */ + if (strcmp(cv->v.str, "-")) { + if (!cv->next) { + log_error("Missing data device in areas array for segment %s.", seg_name); + return 0; + } + + if (!(lv = find_lv(seg->lv->vg, cv->v.str))) { + log_error("Couldn't find volume '%s' for segment '%s'.", + cv->v.str ? : "NULL", seg_name); + return 0; + } + if (!set_lv_segment_area_lv(seg, s, lv, 0, RAID_META)) return_0; + } - /* Data device comes second */ cv = cv->next; - if (!(lv1 = find_lv(seg->lv->vg, cv->v.str))) { + + /* Data device comes second unless RAID0 */ + if (!(lv = find_lv(seg->lv->vg, cv->v.str))) { log_error("Couldn't find volume '%s' for segment '%s'.", cv->v.str ? : "NULL", seg_name); return 0; } - if (!set_lv_segment_area_lv(seg, s, lv1, 0, RAID_IMAGE)) - return_0; + + if (!set_lv_segment_area_lv(seg, s, lv, 0, RAID_IMAGE)) + return_0; } /* @@ -111,50 +117,29 @@ static int _raid_text_import(struct lv_segment *seg, const struct dm_config_node *sn, struct dm_hash_table *pv_hash) { + int i; const struct dm_config_value *cv; - - if (dm_config_has_node(sn, "region_size")) { - if (!dm_config_get_uint32(sn, "region_size", &seg->region_size)) { - log_error("Couldn't read 'region_size' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "stripe_size")) { - if (!dm_config_get_uint32(sn, "stripe_size", &seg->stripe_size)) { - log_error("Couldn't read 'stripe_size' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "writebehind")) { - if (!dm_config_get_uint32(sn, "writebehind", &seg->writebehind)) { - log_error("Couldn't read 'writebehind' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "min_recovery_rate")) { - if (!dm_config_get_uint32(sn, "min_recovery_rate", - &seg->min_recovery_rate)) { - log_error("Couldn't read 'min_recovery_rate' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "max_recovery_rate")) { - if (!dm_config_get_uint32(sn, "max_recovery_rate", - &seg->max_recovery_rate)) { - log_error("Couldn't read 'max_recovery_rate' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; + const struct { + const char *name; + void *var; + } attr_import[] = { + { "region_size", &seg->region_size }, + { "stripe_size", &seg->stripe_size }, + { "writebehind", &seg->writebehind }, + { "min_recovery_rate", &seg->min_recovery_rate }, + { "max_recovery_rate", &seg->max_recovery_rate }, + }, *aip = attr_import; + + for (i = 0; i < DM_ARRAY_SIZE(attr_import); i++, aip++) { + if (dm_config_has_node(sn, aip->name)) { + if (!dm_config_get_uint32(sn, aip->name, aip->var)) { + log_error("Couldn't read '%s' for segment %s of logical volume %s.", + aip->name, dm_config_parent_name(sn), seg->lv->name); + return 0; + } } } + if (!dm_config_get_list(sn, "raids", &cv)) { log_error("Couldn't find RAID array for " "segment %s of logical volume %s.", @@ -163,7 +148,7 @@ static int _raid_text_import(struct lv_segment *seg, } if (!_raid_text_import_areas(seg, sn, cv)) { - log_error("Failed to import RAID images"); + log_error("Failed to import RAID component pairs"); return 0; } @@ -174,17 +159,29 @@ static int _raid_text_import(struct lv_segment *seg, static int _raid_text_export(const struct lv_segment *seg, struct formatter *f) { - outf(f, "device_count = %u", seg->area_count); - if (seg->region_size) - outf(f, "region_size = %" PRIu32, seg->region_size); + int raid0 = seg_is_any_raid0(seg); + + if (raid0) + outfc(f, (seg->area_count == 1) ? "# linear" : NULL, + "stripe_count = %u", seg->area_count); + + else { + outf(f, "device_count = %u", seg->area_count); + if (seg->region_size) + outf(f, "region_size = %" PRIu32, seg->region_size); + } + if (seg->stripe_size) outf(f, "stripe_size = %" PRIu32, seg->stripe_size); - if (seg->writebehind) - outf(f, "writebehind = %" PRIu32, seg->writebehind); - if (seg->min_recovery_rate) - outf(f, "min_recovery_rate = %" PRIu32, seg->min_recovery_rate); - if (seg->max_recovery_rate) - outf(f, "max_recovery_rate = %" PRIu32, seg->max_recovery_rate); + + if (!raid0) { + if (seg_is_raid1(seg) && seg->writebehind) + outf(f, "writebehind = %" PRIu32, seg->writebehind); + if (seg->min_recovery_rate) + outf(f, "min_recovery_rate = %" PRIu32, seg->min_recovery_rate); + if (seg->max_recovery_rate) + outf(f, "max_recovery_rate = %" PRIu32, seg->max_recovery_rate); + } return out_areas(f, seg, "raid"); } @@ -222,28 +219,34 @@ static int _raid_add_target_line(struct dev_manager *dm __attribute__((unused)), return 0; } - if (!seg->region_size) { - log_error("Missing region size for mirror segment."); - return 0; - } + if (!seg_is_any_raid0(seg)) { + if (!seg->region_size) { + log_error("Missing region size for mirror segment."); + return 0; + } - for (s = 0; s < seg->area_count; s++) - if (seg_lv(seg, s)->status & LV_REBUILD) - rebuilds |= 1ULL << s; + for (s = 0; s < seg->area_count; s++) + if (seg_lv(seg, s)->status & LV_REBUILD) + rebuilds |= 1ULL << s; - for (s = 0; s < seg->area_count; s++) - if (seg_lv(seg, s)->status & LV_WRITEMOSTLY) - writemostly |= 1ULL << s; + for (s = 0; s < seg->area_count; s++) + if (seg_lv(seg, s)->status & LV_WRITEMOSTLY) + writemostly |= 1ULL << s; - if (mirror_in_sync()) - flags = DM_NOSYNC; + if (mirror_in_sync()) + flags = DM_NOSYNC; + } params.raid_type = lvseg_name(seg); + if (seg->segtype->parity_devs) { /* RAID 4/5/6 */ params.mirrors = 1; params.stripes = seg->area_count - seg->segtype->parity_devs; - } else if (strcmp(seg->segtype->name, SEG_TYPE_NAME_RAID10)) { + } else if (seg_is_any_raid0(seg)){ + params.mirrors = 1; + params.stripes = seg->area_count; + } else if (seg_is_raid10(seg)) { /* RAID 10 only supports 2 mirrors now */ params.mirrors = 2; params.stripes = seg->area_count / 2; @@ -252,13 +255,18 @@ static int _raid_add_target_line(struct dev_manager *dm __attribute__((unused)), params.mirrors = seg->area_count; params.stripes = 1; params.writebehind = seg->writebehind; + params.writemostly = writemostly; } - params.region_size = seg->region_size; + + /* RAID 0 doesn't have a bitmap, thus no region_size, rebuilds etc. */ + if (!seg_is_any_raid0(seg)) { + params.region_size = seg->region_size; + params.rebuilds = rebuilds; + params.min_recovery_rate = seg->min_recovery_rate; + params.max_recovery_rate = seg->max_recovery_rate; + } + params.stripe_size = seg->stripe_size; - params.rebuilds = rebuilds; - params.writemostly = writemostly; - params.min_recovery_rate = seg->min_recovery_rate; - params.max_recovery_rate = seg->max_recovery_rate; params.flags = flags; if (!dm_tree_node_add_raid_target_with_params(node, len, &params)) @@ -332,6 +340,7 @@ static int _raid_target_present(struct cmd_context *cmd, const char *feature; } _features[] = { { 1, 3, RAID_FEATURE_RAID10, SEG_TYPE_NAME_RAID10 }, + { 1, 7, RAID_FEATURE_RAID0, SEG_TYPE_NAME_RAID0 }, }; static int _raid_checked = 0; @@ -437,18 +446,20 @@ static const struct raid_type { unsigned parity; int extra_flags; } _raid_types[] = { - { SEG_TYPE_NAME_RAID1, 0, SEG_AREAS_MIRRORED }, + { SEG_TYPE_NAME_RAID0, 0, SEG_RAID0 }, + { SEG_TYPE_NAME_RAID0_META, 0, SEG_RAID0_META }, + { SEG_TYPE_NAME_RAID1, 0, SEG_RAID1 | SEG_AREAS_MIRRORED }, { SEG_TYPE_NAME_RAID10, 0, SEG_AREAS_MIRRORED }, - { SEG_TYPE_NAME_RAID4, 1 }, - { SEG_TYPE_NAME_RAID5, 1 }, - { SEG_TYPE_NAME_RAID5_LA, 1 }, - { SEG_TYPE_NAME_RAID5_LS, 1 }, - { SEG_TYPE_NAME_RAID5_RA, 1 }, - { SEG_TYPE_NAME_RAID5_RS, 1 }, - { SEG_TYPE_NAME_RAID6, 2 }, - { SEG_TYPE_NAME_RAID6_NC, 2 }, - { SEG_TYPE_NAME_RAID6_NR, 2 }, - { SEG_TYPE_NAME_RAID6_ZR, 2 } + { SEG_TYPE_NAME_RAID4, 1, SEG_RAID4 }, + { SEG_TYPE_NAME_RAID5, 1, SEG_RAID5_LS }, + { SEG_TYPE_NAME_RAID5_LA, 1, SEG_RAID5_LA }, + { SEG_TYPE_NAME_RAID5_LS, 1, SEG_RAID5_LS }, + { SEG_TYPE_NAME_RAID5_RA, 1, SEG_RAID5_RA }, + { SEG_TYPE_NAME_RAID5_RS, 1, SEG_RAID5_RS }, + { SEG_TYPE_NAME_RAID6, 2, SEG_RAID6_ZR }, + { SEG_TYPE_NAME_RAID6_NC, 2, SEG_RAID6_NC }, + { SEG_TYPE_NAME_RAID6_NR, 2, SEG_RAID6_NR }, + { SEG_TYPE_NAME_RAID6_ZR, 2, SEG_RAID6_ZR } }; static struct segment_type *_init_raid_segtype(struct cmd_context *cmd, diff --git a/lib/uuid/uuid.c b/lib/uuid/uuid.c index c85b822..67162dd 100644 --- a/lib/uuid/uuid.c +++ b/lib/uuid/uuid.c @@ -140,7 +140,7 @@ int id_valid(struct id *id) for (i = 0; i < ID_LEN; i++) if (!_inverse_c[id->uuid[i]]) { - log_error("UUID contains invalid character"); + log_error("UUID contains invalid character '%c'", id->uuid[i]); return 0; } diff --git a/libdm/libdm-deptree.c b/libdm/libdm-deptree.c index 578f645..c34d532 100644 --- a/libdm/libdm-deptree.c +++ b/libdm/libdm-deptree.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2005-2014 Red Hat, Inc. All rights reserved. + * Copyright (C) 2005-2015 Red Hat, Inc. All rights reserved. * * This file is part of the device-mapper userspace tools. * @@ -42,6 +42,8 @@ enum { SEG_ZERO, SEG_THIN_POOL, SEG_THIN, + SEG_RAID0, + SEG_RAID0_META, SEG_RAID1, SEG_RAID10, SEG_RAID4, @@ -74,6 +76,8 @@ static const struct { { SEG_ZERO, "zero"}, { SEG_THIN_POOL, "thin-pool"}, { SEG_THIN, "thin"}, + { SEG_RAID0, "raid0"}, + { SEG_RAID0_META, "raid0_meta"}, { SEG_RAID1, "raid1"}, { SEG_RAID10, "raid10"}, { SEG_RAID4, "raid4"}, @@ -86,7 +90,7 @@ static const struct { { SEG_RAID6_NC, "raid6_nc"}, /* - *WARNING: Since 'raid' target overloads this 1:1 mapping table + * WARNING: Since 'raid' target overloads this 1:1 mapping table * for search do not add new enum elements past them! */ { SEG_RAID5_LS, "raid5"}, /* same as "raid5_ls" (default for MD also) */ @@ -2089,6 +2093,8 @@ static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)), EMIT_PARAMS(*pos, "%s", synctype); } break; + case SEG_RAID0: + case SEG_RAID0_META: case SEG_RAID1: case SEG_RAID10: case SEG_RAID4: @@ -2286,6 +2292,26 @@ static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *s return 1; } +/* Return 2 if @p != 0 */ +static int _2_if_value(unsigned p) +{ + return p ? 2 : 0; +} + +/* Return number of bits passed in @bits assuming 2 * 64 bit size */ +static int _get_params_count(uint64_t *bits) +{ + int r = 0; + int i = 4; + + while (i--) { + r += 2 * hweight32(bits[i] & 0xFFFFFFFF); + r += 2 * hweight32(bits[i] >> 32); + } + + return r; +} + static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, uint32_t minor, struct load_segment *seg, uint64_t *seg_start, char *params, @@ -2294,34 +2320,32 @@ static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, uint32_t i; int param_count = 1; /* mandatory 'chunk size'/'stripe size' arg */ int pos = 0; + unsigned type; + + if (seg->area_count % 2) + return 0; if ((seg->flags & DM_NOSYNC) || (seg->flags & DM_FORCESYNC)) param_count++; - if (seg->region_size) - param_count += 2; - - if (seg->writebehind) - param_count += 2; + param_count += _2_if_value(seg->region_size) + + _2_if_value(seg->writebehind) + + _2_if_value(seg->min_recovery_rate) + + _2_if_value(seg->max_recovery_rate); - if (seg->min_recovery_rate) - param_count += 2; - - if (seg->max_recovery_rate) - param_count += 2; - - /* rebuilds is 64-bit */ - param_count += 2 * hweight32(seg->rebuilds & 0xFFFFFFFF); - param_count += 2 * hweight32(seg->rebuilds >> 32); - - /* rebuilds is 64-bit */ - param_count += 2 * hweight32(seg->writemostly & 0xFFFFFFFF); - param_count += 2 * hweight32(seg->writemostly >> 32); + /* rebuilds and writemostly are 4 * 64 bits */ + param_count += _get_params_count(&seg->rebuilds); + param_count += _get_params_count(&seg->writemostly); if ((seg->type == SEG_RAID1) && seg->stripe_size) log_error("WARNING: Ignoring RAID1 stripe size"); - EMIT_PARAMS(pos, "%s %d %u", _dm_segtypes[seg->type].target, + /* Kernel only expects "raid0", not "raid0_meta" */ + type = seg->type; + if (type == SEG_RAID0_META) + type = SEG_RAID0; + + EMIT_PARAMS(pos, "%s %d %u", _dm_segtypes[type].target, param_count, seg->stripe_size); if (seg->flags & DM_NOSYNC) @@ -2525,6 +2549,8 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major, seg->iv_offset != DM_CRYPT_IV_DEFAULT ? seg->iv_offset : *seg_start); break; + case SEG_RAID0: + case SEG_RAID0_META: case SEG_RAID1: case SEG_RAID10: case SEG_RAID4: @@ -4074,6 +4100,8 @@ int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset) seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); switch (seg->type) { + case SEG_RAID0: + case SEG_RAID0_META: case SEG_RAID1: case SEG_RAID4: case SEG_RAID5_LA: diff --git a/tools/lvchange.c b/tools/lvchange.c index e790ea0..0b5178d 100644 --- a/tools/lvchange.c +++ b/tools/lvchange.c @@ -720,7 +720,7 @@ static int _lvchange_writemostly(struct logical_volume *lv) struct cmd_context *cmd = lv->vg->cmd; struct lv_segment *raid_seg = first_seg(lv); - if (strcmp(raid_seg->segtype->name, SEG_TYPE_NAME_RAID1)) { + if (!seg_is_raid1(raid_seg)) { log_error("--write%s can only be used with 'raid1' segment type", arg_count(cmd, writemostly_ARG) ? "mostly" : "behind"); return 0; diff --git a/tools/lvconvert.c b/tools/lvconvert.c index fe8b761..a5c79e5 100644 --- a/tools/lvconvert.c +++ b/tools/lvconvert.c @@ -239,6 +239,7 @@ static int _check_conversion_type(struct cmd_context *cmd, const char *type_str) /* FIXME: Check thin-pool and thin more thoroughly! */ if (!strcmp(type_str, "snapshot") || + !strcmp(type_str, "striped") || !strncmp(type_str, "raid", 4) || !strcmp(type_str, "cache-pool") || !strcmp(type_str, "cache") || !strcmp(type_str, "thin-pool") || !strcmp(type_str, "thin")) @@ -378,6 +379,12 @@ static int _read_params(struct cmd_context *cmd, int argc, char **argv, if (!_check_conversion_type(cmd, type_str)) return_0; + if (arg_count(cmd, type_ARG) && + !(lp->segtype = get_segtype_from_string(cmd, arg_str_value(cmd, type_ARG, NULL)))) + return_0; + if (!get_stripe_params(cmd, &lp->stripes, &lp->stripe_size)) + return_0; + if (arg_count(cmd, repair_ARG) && arg_outside_list_is_set(cmd, "cannot be used with --repair", repair_ARG, @@ -1160,7 +1167,8 @@ static int _lvconvert_mirrors_parse_params(struct cmd_context *cmd, *new_mimage_count = lp->mirrors; /* Too many mimages? */ - if (lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) { + if ((!arg_count(cmd, type_ARG) || strcmp(arg_str_value(cmd, type_ARG, NULL), SEG_TYPE_NAME_RAID1)) && + lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) { log_error("Only up to %d images in mirror supported currently.", DEFAULT_MIRROR_MAX_IMAGES); return 0; @@ -1254,7 +1262,7 @@ static int _lvconvert_mirrors_aux(struct cmd_context *cmd, if ((lp->mirrors == 1) && !lv_is_mirrored(lv)) { log_warn("Logical volume %s is already not mirrored.", lv->name); - return 1; + return 2; /* Indicate fact it's already converted to caller */ } region_size = adjusted_mirror_region_size(lv->vg->extent_size, @@ -1577,7 +1585,7 @@ static int _lvconvert_mirrors(struct cmd_context *cmd, struct logical_volume *lv, struct lvconvert_params *lp) { - int repair = arg_count(cmd, repair_ARG); + int r, repair = arg_count(cmd, repair_ARG); uint32_t old_mimage_count; uint32_t old_log_count; uint32_t new_mimage_count; @@ -1629,29 +1637,17 @@ static int _lvconvert_mirrors(struct cmd_context *cmd, if (repair) return _lvconvert_mirrors_repair(cmd, lv, lp); - if (!_lvconvert_mirrors_aux(cmd, lv, lp, NULL, - new_mimage_count, new_log_count)) + if (!(r = _lvconvert_mirrors_aux(cmd, lv, lp, NULL, + new_mimage_count, new_log_count))) return 0; - if (!lp->need_polling) + if (r != 2 && !lp->need_polling) log_print_unless_silent("Logical volume %s converted.", lv->name); backup(lv->vg); return 1; } -static int _is_valid_raid_conversion(const struct segment_type *from_segtype, - const struct segment_type *to_segtype) -{ - if (from_segtype == to_segtype) - return 1; - - if (!segtype_is_raid(from_segtype) && !segtype_is_raid(to_segtype)) - return_0; /* Not converting to or from RAID? */ - - return 1; -} - static void _lvconvert_raid_repair_ask(struct cmd_context *cmd, struct lvconvert_params *lp, int *replace_dev) @@ -1701,13 +1697,6 @@ static int _lvconvert_raid(struct logical_volume *lv, struct lvconvert_params *l if (!_lvconvert_validate_thin(lv, lp)) return_0; - if (!_is_valid_raid_conversion(seg->segtype, lp->segtype)) { - log_error("Unable to convert %s/%s from %s to %s", - lv->vg->name, lv->name, - lvseg_name(seg), lp->segtype->name); - return 0; - } - /* Change number of RAID1 images */ if (arg_count(cmd, mirrors_ARG) || arg_count(cmd, splitmirrors_ARG)) { image_count = lv_raid_image_count(lv); @@ -1739,8 +1728,21 @@ static int _lvconvert_raid(struct logical_volume *lv, struct lvconvert_params *l if (arg_count(cmd, mirrors_ARG)) return lv_raid_change_image_count(lv, image_count, lp->pvh); - if (arg_count(cmd, type_ARG)) - return lv_raid_reshape(lv, lp->segtype); + if ((seg_is_linear(seg) || seg_is_striped(seg) || seg_is_mirrored(seg) || lv_is_raid(lv)) && + (arg_count(cmd, type_ARG) || + image_count || + arg_count(cmd, stripes_long_ARG) || + arg_count(cmd, stripesize_ARG))) { + unsigned stripe_size = arg_count(cmd, stripesize_ARG) ? lp->stripe_size : 0; + + if (segtype_is_any_raid0(lp->segtype) && + !(lp->target_attr & RAID_FEATURE_RAID0)) { + log_error("RAID module does not support RAID0."); + return 0; + } + + return lv_raid_convert(lv, lp->segtype, lp->yes, lp->force, image_count, lp->stripes, stripe_size, lp->pvh); + } if (arg_count(cmd, replace_ARG)) return lv_raid_replace(lv, lp->replace_pvh, lp->pvh); @@ -1754,7 +1756,9 @@ static int _lvconvert_raid(struct logical_volume *lv, struct lvconvert_params *l return 0; } - if (!lv_raid_percent(lv, &sync_percent)) { + if (!seg_is_striped(seg) && + !seg_is_any_raid0(seg) && + !lv_raid_percent(lv, &sync_percent)) { log_error("Unable to determine sync status of %s/%s.", lv->vg->name, lv->name); return 0; diff --git a/tools/lvcreate.c b/tools/lvcreate.c index e41f76c..d7383b0 100644 --- a/tools/lvcreate.c +++ b/tools/lvcreate.c @@ -453,7 +453,7 @@ static int _read_mirror_params(struct cmd_context *cmd, static int _read_raid_params(struct cmd_context *cmd, struct lvcreate_params *lp) { - if ((lp->stripes < 2) && !strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + if ((lp->stripes < 2) && segtype_is_raid10(lp->segtype)) { if (arg_count(cmd, stripes_ARG)) { /* User supplied the bad argument */ log_error("Segment type 'raid10' requires 2 or more stripes."); @@ -467,8 +467,9 @@ static int _read_raid_params(struct cmd_context *cmd, /* * RAID1 does not take a stripe arg */ - if ((lp->stripes > 1) && seg_is_mirrored(lp) && - strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + if ((lp->stripes > 1) && + (seg_is_mirrored(lp) || segtype_is_raid1(lp->segtype)) && + !segtype_is_raid10(lp->segtype)) { log_error("Stripe argument cannot be used with segment type, %s", lp->segtype->name); return 0; @@ -504,15 +505,26 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd, /* Common mirror and raid params */ if (arg_count(cmd, mirrors_ARG)) { + unsigned max_images; + const char *type; + lp->mirrors = arg_uint_value(cmd, mirrors_ARG, 0) + 1; + if (segtype_is_raid1(lp->segtype)) { + type = SEG_TYPE_NAME_RAID1; + max_images = DEFAULT_RAID_MAX_IMAGES; + } else { + type = "mirror"; + max_images = DEFAULT_MIRROR_MAX_IMAGES; + } - if (lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) { - log_error("Only up to " DM_TO_STRING(DEFAULT_MIRROR_MAX_IMAGES) - " images in mirror supported currently."); + if (lp->mirrors > max_images) { + log_error("Only up to %u images in %s supported currently.", + max_images, type); return 0; } - if ((lp->mirrors > 2) && !strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + if (lp->mirrors > 2 && + segtype_is_raid10(lp->segtype)) { /* * FIXME: When RAID10 is no longer limited to * 2-way mirror, 'lv_mirror_count()' @@ -534,6 +546,14 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd, /* Default to 2 mirrored areas if '--type mirror|raid1|raid10' */ lp->mirrors = seg_is_mirrored(lp) ? 2 : 1; + if (lp->stripes < 2 && + (segtype_is_any_raid0(lp->segtype) || segtype_is_raid10(lp->segtype))) + if (arg_count(cmd, stripes_ARG)) { + /* User supplied the bad argument */ + log_error("Segment type 'raid(1)0' requires 2 or more stripes."); + return 0; + } + lp->nosync = arg_is_set(cmd, nosync_ARG); if (!(lp->region_size = arg_uint_value(cmd, regionsize_ARG, 0)) && @@ -548,6 +568,26 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd, return 0; } + /* + * RAID1 does not take a stripe arg + */ + if ((lp->stripes > 1) && + (seg_is_mirrored(lp) || segtype_is_raid1(lp->segtype)) && + !segtype_is_any_raid0(lp->segtype) && + !segtype_is_raid10(lp->segtype)) { + log_error("Stripe argument cannot be used with segment type, %s", + lp->segtype->name); + return 0; + } + + if (arg_count(cmd, mirrors_ARG) && segtype_is_raid(lp->segtype) && + !segtype_is_raid1(lp->segtype) && + !segtype_is_raid10(lp->segtype)) { + log_error("Mirror argument cannot be used with segment type, %s", + lp->segtype->name); + return 0; + } + if (lp->region_size % (pagesize >> SECTOR_SHIFT)) { log_error("Region size (%" PRIu32 ") must be a multiple of " "machine memory page size (%d)", @@ -974,7 +1014,13 @@ static int _lvcreate_params(struct cmd_context *cmd, return 0; } - if (!strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10) && + if (segtype_is_any_raid0(lp->segtype) && + !(lp->target_attr & RAID_FEATURE_RAID0)) { + log_error("RAID module does not support RAID0."); + return 0; + } + + if (segtype_is_raid10(lp->segtype) && !(lp->target_attr & RAID_FEATURE_RAID10)) { log_error("RAID module does not support RAID10."); return 0; @@ -1204,29 +1250,26 @@ static int _check_raid_parameters(struct volume_group *vg, unsigned devs = lcp->pv_count ? : dm_list_size(&vg->pvs); struct cmd_context *cmd = vg->cmd; - /* - * If number of devices was not supplied, we can infer from - * the PVs given. - */ if (!seg_is_mirrored(lp)) { if (!arg_count(cmd, stripes_ARG) && (devs > 2 * lp->segtype->parity_devs)) - lp->stripes = devs - lp->segtype->parity_devs; + lp->stripes = 2; /* Or stripe bomb with many devs given */ if (!lp->stripe_size) lp->stripe_size = find_config_tree_int(cmd, metadata_stripesize_CFG, NULL) * 2; - if (lp->stripes <= lp->segtype->parity_devs) { + if (lp->stripes < 2) { // <= lp->segtype->parity_devs) { log_error("Number of stripes must be at least %d for %s", lp->segtype->parity_devs + 1, lp->segtype->name); return 0; } - } else if (!strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + } else if (segtype_is_any_raid0(lp->segtype) || + segtype_is_raid10(lp->segtype)) { if (!arg_count(cmd, stripes_ARG)) lp->stripes = devs / lp->mirrors; if (lp->stripes < 2) { - log_error("Unable to create RAID10 LV," + log_error("Unable to create RAID(1)0 LV," " insufficient number of devices."); return 0; }

8 years, 10 months

1
0
0 / 0

master - Add support for raid0/raid0_meta raid types

by Heinz Mauelshagen

Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=b46743be20680b... Commit: b46743be20680b252ce4291d707905db5a4df5dc Parent: fd29c7f3a171174dcd47eb8b23ff42a145cdacc6 cb5156ce1f909abfde91e51a46b95eaca45f46ce Author: Heinz Mauelshagen <heinzm(a)redhat.com> AuthorDate: Tue Jun 9 19:45:10 2015 +0200 Committer: Heinz Mauelshagen <heinzm(a)redhat.com> CommitterDate: Tue Jun 9 19:45:10 2015 +0200 Add support for raid0/raid0_meta raid types Supports creation of raid types raid0 and raid0_meta with 'lvcreate --type (raid0|raid0_meta) ...' based on functionality available in dm-raid target version 1.0.7 The raid0 type provides access via the MD raid0 personality without metadata devices The raid0_meta type provides access via the MD raid0 personality _with_ metadata devices, i.e. it reserves space for rmeta devices which is e.g. useful for future functional enhancements supporting conversions between raid0 and raid4/5/6/10 to ensure metadata space on raid0_meta creation. Conversion between striped/raid0/raid0_meta LVs with striped LVs being restricted to one stripe zone (i.e. no varying stripes) is possible with 'lvconvert --type (striped|raid0|raid0_meta) ...' lvconvert-striped-raid0.sh provides various tests" WHATS_NEW | 1 + lib/activate/dev_manager.c | 14 +- lib/config/defaults.h | 2 + lib/format_text/export.c | 6 +- lib/metadata/lv.c | 1 + lib/metadata/lv.h | 4 +- lib/metadata/lv_manip.c | 362 ++++++---- lib/metadata/merge.c | 2 +- lib/metadata/metadata-exported.h | 12 +- lib/metadata/raid_manip.c | 1483 +++++++++++++++++++++++++++++++------- lib/metadata/segtype.h | 133 +++- lib/raid/raid.c | 213 +++--- lib/uuid/uuid.c | 2 +- libdm/libdm-deptree.c | 70 ++- tools/lvchange.c | 2 +- tools/lvconvert.c | 60 +- tools/lvcreate.c | 75 ++- 17 files changed, 1834 insertions(+), 608 deletions(-)

8 years, 10 months

1
0
0 / 0

master - Add support for raid0/raid0_meta raid types

by Heinz Mauelshagen

Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=cb5156ce1f909a... Commit: cb5156ce1f909abfde91e51a46b95eaca45f46ce Parent: 3225f8d17596b79b76ed9da5291843d02a2aa7b6 Author: Heinz Mauelshagen <heinzm(a)redhat.com> AuthorDate: Tue Jun 9 19:41:41 2015 +0200 Committer: Heinz Mauelshagen <heinzm(a)redhat.com> CommitterDate: Tue Jun 9 19:41:41 2015 +0200 Add support for raid0/raid0_meta raid types Supports creation of raid types raid0 and raid0_meta with 'lvcreate --type (raid0|raid0_meta) ...' based on functionality available in dm-raid target version 1.0.7 The raid0 type provides access via the MD raid0 personality without metadata devices The raid0_meta type provides access via the MD raid0 personality _with_ metadata devices, i.e. it reserves space for rmeta devices which is useful for future functional enhancements supporting conversions between raid0 and raid4/5/6/10 to ensure metadata space on raid0_meta creation. Conversion between striped/raid0/raid0_meta LVs with striped LVs being restricted to one stripe zone (i.e. no varying stripes) is possible with 'lvconvert --type (striped|raid0|raid0_meta) ...' lvconvert-striped-raid0.sh provides various tests --- WHATS_NEW | 1 + lib/activate/dev_manager.c | 14 +- lib/config/defaults.h | 2 + lib/format_text/export.c | 6 +- lib/metadata/lv.c | 1 + lib/metadata/lv.h | 4 +- lib/metadata/lv_manip.c | 362 ++++++---- lib/metadata/merge.c | 2 +- lib/metadata/metadata-exported.h | 12 +- lib/metadata/raid_manip.c | 1483 +++++++++++++++++++++++++++++++------- lib/metadata/segtype.h | 133 +++- lib/raid/raid.c | 213 +++--- lib/uuid/uuid.c | 2 +- libdm/libdm-deptree.c | 70 ++- tools/lvchange.c | 2 +- tools/lvconvert.c | 60 +- tools/lvcreate.c | 75 ++- 17 files changed, 1834 insertions(+), 608 deletions(-) diff --git a/WHATS_NEW b/WHATS_NEW index bfcc094..db48233 100644 --- a/WHATS_NEW +++ b/WHATS_NEW @@ -8,6 +8,7 @@ Version 2.02.121 - Do not fail polling when poll LV not found (already finished or removed). Replace poll_get_copy_vg/lv fns with vg_read() and find_lv() in polldaemon. Close all device fds only in before sleep call in polldaemon. + Support for raid types raid0 and raid0_meta Version 2.02.120 - 15th May 2015 ================================ diff --git a/lib/activate/dev_manager.c b/lib/activate/dev_manager.c index 1171f4c..38d76c4 100644 --- a/lib/activate/dev_manager.c +++ b/lib/activate/dev_manager.c @@ -2134,6 +2134,7 @@ static int _add_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree, !_add_lv_to_dtree(dm, dtree, seg_lv(seg, s), 0)) return_0; if (seg_is_raid(seg) && + seg->meta_areas && seg_metalv(seg, s) && !_add_lv_to_dtree(dm, dtree, seg_metalv(seg, s), 0)) return_0; } @@ -2303,9 +2304,15 @@ int add_areas_line(struct dev_manager *dm, struct lv_segment *seg, return_0; continue; } - if (!(dlid = build_dm_uuid(dm->mem, seg_metalv(seg, s), NULL))) - return_0; - if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_metale(seg, s))) + + if (seg->meta_areas && seg_metalv(seg, s)) { + if (!(dlid = build_dm_uuid(dm->mem, seg_metalv(seg, s), NULL))) + return_0; + if (!dm_tree_node_add_target_area(node, NULL, dlid, extent_size * seg_metale(seg, s))) + return_0; + + /* One for metadata area */ + } else if (!dm_tree_node_add_null_area(node, 0)) return_0; if (!(dlid = build_dm_uuid(dm->mem, seg_lv(seg, s), NULL))) @@ -2632,6 +2639,7 @@ static int _add_segment_to_dtree(struct dev_manager *dm, laopts, NULL)) return_0; if (seg_is_raid(seg) && + seg->meta_areas && seg_metalv(seg, s) && !_add_new_lv_to_dtree(dm, dtree, seg_metalv(seg, s), laopts, NULL)) return_0; diff --git a/lib/config/defaults.h b/lib/config/defaults.h index 6793d01..3b6a877 100644 --- a/lib/config/defaults.h +++ b/lib/config/defaults.h @@ -60,7 +60,9 @@ #define DEFAULT_MIRROR_LOG_FAULT_POLICY "allocate" #define DEFAULT_MIRROR_IMAGE_FAULT_POLICY "remove" #define DEFAULT_MIRROR_MAX_IMAGES 8 /* limited by kernel DM_KCOPYD_MAX_REGIONS */ +#define DEFAULT_RAID_MAX_IMAGES 64 /* limited by kernel failed devices bitfield in superblock (raid4/5/6 max 253) */ #define DEFAULT_RAID_FAULT_POLICY "warn" +#define DEFAULT_RAID_STRIPE_SIZE (64 * 2) #define DEFAULT_DMEVENTD_RAID_LIB "libdevmapper-event-lvm2raid.so" #define DEFAULT_DMEVENTD_MIRROR_LIB "libdevmapper-event-lvm2mirror.so" diff --git a/lib/format_text/export.c b/lib/format_text/export.c index 018772e..b340fc8 100644 --- a/lib/format_text/export.c +++ b/lib/format_text/export.c @@ -590,14 +590,14 @@ int out_areas(struct formatter *f, const struct lv_segment *seg, /* RAID devices are laid-out in metadata/data pairs */ if (!lv_is_raid_image(seg_lv(seg, s)) || - !lv_is_raid_metadata(seg_metalv(seg, s))) { + (seg->meta_areas && seg_metalv(seg, s) && !lv_is_raid_metadata(seg_metalv(seg, s)))) { log_error("RAID segment has non-RAID areas"); return 0; } outf(f, "\"%s\", \"%s\"%s", - seg_metalv(seg, s)->name, seg_lv(seg, s)->name, - (s == seg->area_count - 1) ? "" : ","); + (seg->meta_areas && seg_metalv(seg, s)) ? seg_metalv(seg, s)->name : "-", + seg_lv(seg, s)->name, (s == seg->area_count - 1) ? "" : ","); break; case AREA_UNASSIGNED: diff --git a/lib/metadata/lv.c b/lib/metadata/lv.c index 10ce906..5329b91 100644 --- a/lib/metadata/lv.c +++ b/lib/metadata/lv.c @@ -533,6 +533,7 @@ int lv_raid_image_in_sync(const struct logical_volume *lv) if ((seg = first_seg(lv))) raid_seg = get_only_segment_using_this_lv(seg->lv); + if (!raid_seg) { log_error("Failed to find RAID segment for %s", lv->name); return 0; diff --git a/lib/metadata/lv.h b/lib/metadata/lv.h index 4475085..3031196 100644 --- a/lib/metadata/lv.h +++ b/lib/metadata/lv.h @@ -35,8 +35,8 @@ struct logical_volume { int32_t major; int32_t minor; - uint64_t size; /* Sectors */ - uint32_t le_count; + uint64_t size; /* Sectors visible */ + uint32_t le_count; /* Logical extents visible */ uint32_t origin_count; uint32_t external_count; diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c index 1251a5d..729ec78 100644 --- a/lib/metadata/lv_manip.c +++ b/lib/metadata/lv_manip.c @@ -38,9 +38,6 @@ typedef enum { NEXT_AREA } area_use_t; -/* FIXME: remove RAID_METADATA_AREA_LEN macro after defining 'raid_log_extents'*/ -#define RAID_METADATA_AREA_LEN 1 - /* FIXME These ended up getting used differently from first intended. Refactor. */ /* Only one of A_CONTIGUOUS_TO_LVSEG, A_CLING_TO_LVSEG, A_CLING_TO_ALLOCED may be set */ #define A_CONTIGUOUS_TO_LVSEG 0x01 /* Must be contiguous to an existing segment */ @@ -115,6 +112,8 @@ enum { LV_TYPE_DATA, LV_TYPE_SPARE, LV_TYPE_VIRTUAL, + LV_TYPE_RAID0, + LV_TYPE_RAID0_META, LV_TYPE_RAID1, LV_TYPE_RAID10, LV_TYPE_RAID4, @@ -159,6 +158,8 @@ static const char *_lv_type_names[] = { [LV_TYPE_DATA] = "data", [LV_TYPE_SPARE] = "spare", [LV_TYPE_VIRTUAL] = "virtual", + [LV_TYPE_RAID0] = SEG_TYPE_NAME_RAID0, + [LV_TYPE_RAID0_META] = SEG_TYPE_NAME_RAID0_META, [LV_TYPE_RAID1] = SEG_TYPE_NAME_RAID1, [LV_TYPE_RAID10] = SEG_TYPE_NAME_RAID10, [LV_TYPE_RAID4] = SEG_TYPE_NAME_RAID4, @@ -776,7 +777,7 @@ int get_default_region_size(struct cmd_context *cmd) if (region_size & (region_size - 1)) { region_size = _round_down_pow2(region_size); - log_verbose("Reducing mirror region size to %u kiB (power of 2).", + log_verbose("Reducing region size to %u kiB (power of 2).", region_size / 2); } @@ -923,10 +924,13 @@ dm_percent_t copy_percent(const struct logical_volume *lv) uint32_t numerator = 0u, denominator = 0u; struct lv_segment *seg; + if (seg_is_any_raid0(first_seg(lv))) + return DM_PERCENT_INVALID; + dm_list_iterate_items(seg, &lv->segments) { denominator += seg->area_len; - /* FIXME Generalise name of 'extents_copied' field */ + /* FIXME Generalise name of 'extents_copied' field */ if ((seg_is_raid(seg) || seg_is_mirrored(seg)) && (seg->area_count > 1)) numerator += seg->extents_copied; @@ -934,7 +938,7 @@ dm_percent_t copy_percent(const struct logical_volume *lv) numerator += seg->area_len; } - return denominator ? dm_make_percent( numerator, denominator ) : 100.0; + return denominator ? dm_make_percent(numerator, denominator ) : 100.0; } /* @@ -971,6 +975,7 @@ struct lv_segment *alloc_lv_segment(const struct segment_type *segtype, } if (segtype_is_raid(segtype) && + !segtype_is_raid0(segtype) && !(seg->meta_areas = dm_pool_zalloc(mem, areas_sz))) { dm_pool_free(mem, seg); /* frees everything alloced since seg */ return_NULL; @@ -1003,6 +1008,24 @@ struct lv_segment *alloc_lv_segment(const struct segment_type *segtype, return seg; } +/* Round up @extents to next stripe boundary for number of @stripes */ +static uint32_t _round_to_stripe_boundary(struct logical_volume *lv, uint32_t extents, uint32_t stripes, int extend) +{ + uint32_t rest; + + if (!stripes) + return extents; + + /* Round up extents to stripe divisable amount */ + if ((rest = extents % stripes)) { + extents += extend ? stripes - rest : -rest; + log_print_unless_silent("Rounding up size to full stripe size %s", + display_size(lv->vg->cmd, extents * lv->vg->extent_size)); + } + + return extents; +} + struct lv_segment *alloc_snapshot_seg(struct logical_volume *lv, uint64_t status, uint32_t old_le_count) { @@ -1033,6 +1056,7 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t uint32_t area_reduction, int with_discard) { struct lv_segment *cache_seg; + struct logical_volume *lv = seg_lv(seg, s); if (seg_type(seg, s) == AREA_UNASSIGNED) return 1; @@ -1050,10 +1074,10 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t return 1; } - if (lv_is_mirror_image(seg_lv(seg, s)) || - lv_is_thin_pool_data(seg_lv(seg, s)) || - lv_is_cache_pool_data(seg_lv(seg, s))) { - if (!lv_reduce(seg_lv(seg, s), area_reduction)) + if (lv_is_mirror_image(lv) || + lv_is_thin_pool_data(lv) || + lv_is_cache_pool_data(lv)) { + if (!lv_reduce(lv, area_reduction)) return_0; /* FIXME: any upper level reporting */ return 1; } @@ -1067,33 +1091,28 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t return_0; } - if (lv_is_raid_image(seg_lv(seg, s))) { - /* - * FIXME: Use lv_reduce not lv_remove - * We use lv_remove for now, because I haven't figured out - * why lv_reduce won't remove the LV. - lv_reduce(seg_lv(seg, s), area_reduction); - */ - if (area_reduction != seg->area_len) { - log_error("Unable to reduce RAID LV - operation not implemented."); - return_0; - } else { - if (!lv_remove(seg_lv(seg, s))) { - log_error("Failed to remove RAID image %s", - seg_lv(seg, s)->name); - return 0; - } - } + if (lv_is_raid_image(lv)) { + if (seg->meta_areas) { + uint32_t meta_area_reduction; + struct logical_volume *mlv; + struct volume_group *vg = lv->vg; - /* Remove metadata area if image has been removed */ - if (area_reduction == seg->area_len) { - if (!lv_reduce(seg_metalv(seg, s), - seg_metalv(seg, s)->le_count)) { - log_error("Failed to remove RAID meta-device %s", - seg_metalv(seg, s)->name); + if (!(mlv = seg_metalv(seg, s))) return 0; - } + + meta_area_reduction = raid_rmeta_extents_delta(vg->cmd, lv->le_count, lv->le_count - area_reduction, + seg->region_size, vg->extent_size); + if (lv->le_count - area_reduction == 0) + meta_area_reduction = mlv->le_count; + + if (meta_area_reduction && + !lv_reduce(mlv, meta_area_reduction)) + return_0; /* FIXME: any upper level reporting */ } + + if (!lv_reduce(lv, area_reduction)) + return_0; /* FIXME: any upper level reporting */ + return 1; } @@ -1101,9 +1120,9 @@ static int _release_and_discard_lv_segment_area(struct lv_segment *seg, uint32_t log_very_verbose("Remove %s:%" PRIu32 "[%" PRIu32 "] from " "the top of LV %s:%" PRIu32, seg->lv->name, seg->le, s, - seg_lv(seg, s)->name, seg_le(seg, s)); + lv->name, seg_le(seg, s)); - if (!remove_seg_from_segs_using_this_lv(seg_lv(seg, s), seg)) + if (!remove_seg_from_segs_using_this_lv(lv, seg)) return_0; seg_lv(seg, s) = NULL; seg_le(seg, s) = 0; @@ -1239,6 +1258,36 @@ static int _lv_segment_add_areas(struct logical_volume *lv, return 1; } +/* Return @area_len for @extents based on @seg's properties (e.g. striped, ...) */ +static uint32_t _area_len(struct lv_segment *seg, uint32_t extents, uint32_t *area_len) +{ + /* Caller must ensure exact divisibility */ + if (seg_is_striped(seg) || seg_is_striped_raid(seg)) { + uint32_t data_devs = seg->area_count - seg->segtype->parity_devs; + + if (seg_is_raid10(seg) && + data_devs > 1) { + if (data_devs % 2) { + log_error("raid10 data devices not divisible by 2"); + return 0; + } + + data_devs /= 2; + } + + if (extents % data_devs) { + /* HM FIXME: message not right for raid10 */ + log_error("Extents %" PRIu32 " not divisible by #stripes %" PRIu32, extents, data_devs); + return 0; + } + + *area_len = extents / data_devs; + } else + *area_len = extents; + + return 1; +} + /* * Reduce the size of an lv_segment. New size can be zero. */ @@ -1246,24 +1295,16 @@ static int _lv_segment_reduce(struct lv_segment *seg, uint32_t reduction) { uint32_t area_reduction, s; - /* Caller must ensure exact divisibility */ - if (seg_is_striped(seg)) { - if (reduction % seg->area_count) { - log_error("Segment extent reduction %" PRIu32 - " not divisible by #stripes %" PRIu32, - reduction, seg->area_count); - return 0; - } - area_reduction = (reduction / seg->area_count); - } else - area_reduction = reduction; + if (!_area_len(seg, reduction, &area_reduction)) + return 0; for (s = 0; s < seg->area_count; s++) if (!release_and_discard_lv_segment_area(seg, s, area_reduction)) return_0; - seg->len -= reduction; - seg->area_len -= area_reduction; + seg->len -= reduction; + seg->lv->size -= reduction * seg->lv->vg->extent_size; + seg->area_len -= seg_is_striped(seg) ? area_reduction : reduction; return 1; } @@ -1271,19 +1312,27 @@ static int _lv_segment_reduce(struct lv_segment *seg, uint32_t reduction) /* * Entry point for all LV reductions in size. */ +static uint32_t _calc_area_multiple(const struct segment_type *segtype, + const uint32_t area_count, + const uint32_t stripes); static int _lv_reduce(struct logical_volume *lv, uint32_t extents, int delete) { - struct lv_segment *seg; - uint32_t count = extents; + struct lv_segment *seg = first_seg(lv); + uint32_t count; uint32_t reduction; struct logical_volume *pool_lv; + if (seg_is_striped(seg) || seg_is_striped_raid(seg)) + extents = _round_to_stripe_boundary(lv, extents, _calc_area_multiple(seg->segtype, seg->area_count, 0), 0); + if (lv_is_merging_origin(lv)) { log_debug_metadata("Dropping snapshot merge of %s to removed origin %s.", find_snapshot(lv)->lv->name, lv->name); clear_snapshot_merge(lv); } + count = extents; + dm_list_iterate_back_items(seg, &lv->segments) { if (!count) break; @@ -1385,7 +1434,7 @@ int replace_lv_with_error_segment(struct logical_volume *lv) * that suggest it is anything other than "error". */ /* FIXME Check for other flags that need removing */ - lv->status &= ~(MIRROR|MIRRORED|PVMOVE|LOCKED); + lv->status &= ~(MIRROR|MIRRORED|RAID|RAID_IMAGE|RAID_META|PVMOVE|LOCKED); /* FIXME Check for any attached LVs that will become orphans e.g. mirror logs */ @@ -1434,11 +1483,12 @@ struct alloc_handle { struct dm_pool *mem; alloc_policy_t alloc; /* Overall policy */ - int approx_alloc; /* get as much as possible up to new_extents */ + int approx_alloc; /* get as much as possible up to new_extents */ uint32_t new_extents; /* Number of new extents required */ uint32_t area_count; /* Number of parallel areas */ - uint32_t parity_count; /* Adds to area_count, but not area_multiple */ + uint32_t parity_count; /* Adds to area_count, but not area_multiple */ uint32_t area_multiple; /* seg->len = area_len * area_multiple */ + uint32_t area_multiple_check; /* Check area_multiple in _allocate(); needed for striped image additions */ uint32_t log_area_count; /* Number of parallel logs */ uint32_t metadata_area_count; /* Number of parallel metadata areas */ uint32_t log_len; /* Length of log/metadata_area */ @@ -1483,29 +1533,28 @@ static uint32_t _calc_area_multiple(const struct segment_type *segtype, if (segtype_is_striped(segtype)) return area_count; - /* Parity RAID (e.g. RAID 4/5/6) */ - if (segtype_is_raid(segtype) && segtype->parity_devs) { + /* + * RAID10 - only has 2-way mirror right now. + * If we are to move beyond 2-way RAID10, then + * the 'stripes' argument will always need to + * be given. + */ + if (segtype_is_raid10(segtype)) + return stripes ?: area_count / 2; + + /* RAID0 and parity RAID (e.g. RAID 4/5/6) */ + if (segtype_is_striped_raid(segtype)) { /* * As articulated in _alloc_init, we can tell by * the area_count whether a replacement drive is * being allocated; and if this is the case, then * there is no area_multiple that should be used. */ + if (area_count <= segtype->parity_devs) return 1; - return area_count - segtype->parity_devs; - } - /* - * RAID10 - only has 2-way mirror right now. - * If we are to move beyond 2-way RAID10, then - * the 'stripes' argument will always need to - * be given. - */ - if (!strcmp(segtype->name, _lv_type_names[LV_TYPE_RAID10])) { - if (!stripes) - return area_count / 2; - return stripes; + return area_count - segtype->parity_devs; } /* Mirrored stripes */ @@ -1557,7 +1606,7 @@ static int _sufficient_pes_free(struct alloc_handle *ah, struct dm_list *pvms, { uint32_t area_extents_needed = (extents_still_needed - allocated) * ah->area_count / ah->area_multiple; uint32_t parity_extents_needed = (extents_still_needed - allocated) * ah->parity_count / ah->area_multiple; - uint32_t metadata_extents_needed = (ah->alloc_and_split_meta) ? 0 : ah->metadata_area_count * RAID_METADATA_AREA_LEN; /* One each */ + uint32_t metadata_extents_needed =ah->metadata_area_count * ah->log_len; uint32_t total_extents_needed = area_extents_needed + parity_extents_needed + metadata_extents_needed; uint32_t free_pes = pv_maps_size(pvms); @@ -1700,9 +1749,9 @@ static int _setup_alloced_segment(struct logical_volume *lv, uint64_t status, struct lv_segment *seg; area_multiple = _calc_area_multiple(segtype, area_count, 0); + extents = aa[0].len * area_multiple; - if (!(seg = alloc_lv_segment(segtype, lv, lv->le_count, - aa[0].len * area_multiple, + if (!(seg = alloc_lv_segment(segtype, lv, lv->le_count, extents, status, stripe_size, NULL, area_count, aa[0].len, 0u, region_size, 0u, NULL))) { @@ -1718,7 +1767,7 @@ static int _setup_alloced_segment(struct logical_volume *lv, uint64_t status, extents = aa[0].len * area_multiple; lv->le_count += extents; - lv->size += (uint64_t) extents *lv->vg->extent_size; + lv->size += (uint64_t) extents * lv->vg->extent_size; return 1; } @@ -1884,7 +1933,7 @@ static int _for_each_pv(struct cmd_context *cmd, struct logical_volume *lv, *max_seg_len = remaining_seg_len; area_multiple = _calc_area_multiple(seg->segtype, seg->area_count, 0); - area_len = remaining_seg_len / area_multiple ? : 1; + area_len = remaining_seg_len / (area_multiple ?: 1); /* For striped mirrors, all the areas are counted, through the mirror layer */ if (top_level_area_index == -1) @@ -2921,9 +2970,10 @@ static int _allocate(struct alloc_handle *ah, return 1; } - if (ah->area_multiple > 1 && + if (ah->area_multiple_check && + ah->area_multiple > 1 && (ah->new_extents - alloc_state.allocated) % ah->area_multiple) { - log_error("Number of extents requested (%d) needs to be divisible by %d.", + log_error("Number of extents requested (%u) needs to be divisible by %d.", ah->new_extents - alloc_state.allocated, ah->area_multiple); return 0; @@ -3075,6 +3125,7 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, struct dm_pool *mem, const struct segment_type *segtype, alloc_policy_t alloc, int approx_alloc, + int extend, uint32_t existing_extents, uint32_t new_extents, uint32_t mirrors, @@ -3102,10 +3153,9 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, size = sizeof(*ah); /* - * It is a requirement that RAID 4/5/6 are created with a number of - * stripes that is greater than the number of parity devices. (e.g - * RAID4/5 must have at least 2 stripes and RAID6 must have at least - * 3.) It is also a constraint that, when replacing individual devices + * It is a requirement that RAID 4/5/6 have to have at least 2 stripes. + * + * It is also a constraint that, when replacing individual devices * in a RAID 4/5/6 array, no more devices can be replaced than * there are parity devices. (Otherwise, there would not be enough * redundancy to maintain the array.) Understanding these two @@ -3116,12 +3166,18 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, * account for the extra parity devices because the array already * exists and they only want replacement drives. */ - parity_count = (area_count <= segtype->parity_devs) ? 0 : segtype->parity_devs; + + parity_count = extend ? segtype->parity_devs : 0; alloc_count = area_count + parity_count; - if (segtype_is_raid(segtype) && metadata_area_count) + if (segtype_is_raid(segtype) && metadata_area_count) { + if (metadata_area_count != alloc_count) { + log_error(INTERNAL_ERROR "Bad metadata_area_count"); + return 0; + } + /* RAID has a meta area for each device */ alloc_count *= 2; - else + } else /* mirrors specify their exact log count */ alloc_count += metadata_area_count; @@ -3159,30 +3215,29 @@ static struct alloc_handle *_alloc_init(struct cmd_context *cmd, * is calculated from. So, we must pass in the total count to get * a correct area_multiple. */ - ah->area_multiple = _calc_area_multiple(segtype, area_count + parity_count, stripes); + ah->area_multiple = _calc_area_multiple(segtype, area_count + segtype->parity_devs, stripes); + + ah->area_multiple_check = extend ? 1 : 0; + //FIXME: s/mirror_logs_separate/metadata_separate/ so it can be used by others? ah->mirror_logs_separate = find_config_tree_bool(cmd, allocation_mirror_logs_require_separate_pvs_CFG, NULL); - if (mirrors || stripes) - total_extents = new_extents; - else - total_extents = 0; + total_extents = new_extents; if (segtype_is_raid(segtype)) { if (metadata_area_count) { - if (metadata_area_count != area_count) - log_error(INTERNAL_ERROR - "Bad metadata_area_count"); - ah->metadata_area_count = area_count; - ah->alloc_and_split_meta = 1; - - ah->log_len = RAID_METADATA_AREA_LEN; - + ah->log_len = raid_rmeta_extents_delta(cmd, + existing_extents / ah->area_multiple, + (existing_extents + new_extents) / ah->area_multiple, + region_size, extent_size); + ah->metadata_area_count = metadata_area_count; + ah->alloc_and_split_meta = !!ah->log_len; /* * We need 'log_len' extents for each * RAID device's metadata_area */ - total_extents += (ah->log_len * ah->area_multiple); + total_extents += ah->log_len * (ah->area_multiple > 1 ? + area_count / (segtype_is_raid10(segtype) ? mirrors : 1) : 1); } else { ah->log_area_count = 0; ah->log_len = 0; @@ -3261,6 +3316,7 @@ struct alloc_handle *allocate_extents(struct volume_group *vg, alloc_policy_t alloc, int approx_alloc, struct dm_list *parallel_areas) { + int extend = lv ? 1 : 0; struct alloc_handle *ah; if (segtype_is_virtual(segtype)) { @@ -3286,7 +3342,7 @@ struct alloc_handle *allocate_extents(struct volume_group *vg, if (alloc >= ALLOC_INHERIT) alloc = vg->alloc; - if (!(ah = _alloc_init(vg->cmd, vg->vgmem, segtype, alloc, approx_alloc, + if (!(ah = _alloc_init(vg->cmd, vg->vgmem, segtype, alloc, approx_alloc, extend, lv ? lv->le_count : 0, extents, mirrors, stripes, log_count, vg->extent_size, region_size, parallel_areas))) @@ -3704,7 +3760,7 @@ static int _lv_insert_empty_sublvs(struct logical_volume *lv, return_0; /* Metadata LVs for raid */ - if (segtype_is_raid(segtype)) { + if (segtype_is_raid(segtype) && !segtype_is_raid0(segtype)) { if (dm_snprintf(img_name, len, "%s_rmeta_%u", lv->name, i) < 0) return_0; } else @@ -3732,23 +3788,23 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, { const struct segment_type *segtype; struct logical_volume *sub_lv, *meta_lv; - struct lv_segment *seg; + struct lv_segment *seg = first_seg(lv); uint32_t fa, s; - int clear_metadata = 0; + int clear_metadata = lv->le_count ? 0 : 1; - segtype = get_segtype_from_string(lv->vg->cmd, "striped"); + if (!(segtype = get_segtype_from_string(lv->vg->cmd, "striped"))) + return_0; /* * The component devices of a "striped" LV all go in the same * LV. However, RAID has an LV for each device - making the * 'stripes' and 'stripe_size' parameters meaningless. */ - if (seg_is_raid(first_seg(lv))) { + if (seg_is_raid(seg)) { stripes = 1; stripe_size = 0; } - seg = first_seg(lv); for (fa = first_area, s = 0; s < seg->area_count; s++) { if (is_temporary_mirror_layer(seg_lv(seg, s))) { if (!_lv_extend_layered_lv(ah, seg_lv(seg, s), extents, @@ -3767,13 +3823,10 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, } /* Extend metadata LVs only on initial creation */ - if (seg_is_raid(seg) && !lv->le_count) { - if (!seg->meta_areas) { - log_error("No meta_areas for RAID type"); - return 0; - } - - meta_lv = seg_metalv(seg, s); + if (seg_is_raid(seg) && + seg->meta_areas && + ah->log_len && + (meta_lv = seg_metalv(seg, s))) { if (!lv_add_segment(ah, fa + seg->area_count, 1, meta_lv, segtype, 0, meta_lv->status, 0)) { @@ -3781,14 +3834,16 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, meta_lv->name, lv->name); return 0; } - lv_set_visible(meta_lv); - clear_metadata = 1; + + if (clear_metadata) + lv_set_visible(meta_lv); } fa += stripes; } - if (clear_metadata) { + if (clear_metadata && + seg->meta_areas) { /* * We must clear the metadata areas upon creation. */ @@ -3833,20 +3888,33 @@ static int _lv_extend_layered_lv(struct alloc_handle *ah, } } + seg = first_seg(lv); seg->area_len += extents; seg->len += extents; lv->le_count += extents; lv->size += (uint64_t) extents * lv->vg->extent_size; + if (!vg_write(lv->vg) || !vg_commit(lv->vg)) + return_0; + + /* * The MD bitmap is limited to being able to track 2^21 regions. * The region_size must be adjusted to meet that criteria. */ - while (seg_is_raid(seg) && (seg->region_size < (lv->size / (1 << 21)))) { - seg->region_size *= 2; - log_very_verbose("Adjusting RAID region_size from %uS to %uS" - " to support large LV size", - seg->region_size/2, seg->region_size); + if (seg_is_striped_raid(seg) && !seg_is_any_raid0(seg)) { + int adjusted = 0; + + /* HM FIXME: make it larger than just to suit the LV size */ + while (seg->region_size < (lv->size / (1 << 21))) { + seg->region_size *= 2; + adjusted = 1; + } + + if (adjusted) + log_very_verbose("Adjusting RAID region_size from %uS to %uS" + " to support large LV size", + seg->region_size/2, seg->region_size); } return 1; @@ -3874,7 +3942,6 @@ int lv_extend(struct logical_volume *lv, struct alloc_handle *ah; uint32_t sub_lv_count; uint32_t old_extents; - uint32_t new_extents; /* Total logical size after extension. */ log_very_verbose("Adding segment of type %s to LV %s.", segtype->name, lv->name); @@ -3887,19 +3954,24 @@ int lv_extend(struct logical_volume *lv, */ /* FIXME Support striped metadata pool */ log_count = 1; - } else if (segtype_is_raid(segtype) && !lv->le_count) - log_count = mirrors * stripes; + } else if (segtype_is_striped(segtype) || segtype_is_striped_raid(segtype)) { + extents = _round_to_stripe_boundary(lv, extents, stripes, 1); + + /* Make sure metadata LVs are being extended as well */ + if (!segtype_is_striped(segtype) && !segtype_is_raid0(segtype)) + log_count = (mirrors ?: 1) * stripes + segtype->parity_devs; + + } + /* FIXME log_count should be 1 for mirrors */ + if (segtype_is_mirror(segtype)) + log_count = 1; if (!(ah = allocate_extents(lv->vg, lv, segtype, stripes, mirrors, log_count, region_size, extents, allocatable_pvs, alloc, approx_alloc, NULL))) return_0; - new_extents = ah->new_extents; - if (segtype_is_raid(segtype)) - new_extents -= ah->log_len * ah->area_multiple; - if (segtype_is_pool(segtype)) { if (!(r = create_pool(lv, segtype, ah, stripes, stripe_size))) stack; @@ -3928,7 +4000,7 @@ int lv_extend(struct logical_volume *lv, goto out; } - if (!(r = _lv_extend_layered_lv(ah, lv, new_extents - lv->le_count, 0, + if (!(r = _lv_extend_layered_lv(ah, lv, extents, 0, stripes, stripe_size))) goto_out; @@ -4116,7 +4188,7 @@ static int _for_each_sub_lv(struct logical_volume *lv, int skip_pools, return_0; } - if (!seg_is_raid(seg)) + if (!seg_is_raid(seg) || !seg->meta_areas) continue; /* RAID has meta_areas */ @@ -4781,7 +4853,10 @@ static int _lvresize_adjust_extents(struct cmd_context *cmd, struct logical_volu return 0; } - if (!strcmp(mirr_seg->segtype->name, _lv_type_names[LV_TYPE_RAID10])) { + if (!strcmp(mirr_seg->segtype->name, _lv_type_names[LV_TYPE_RAID0])) { + lp->stripes = mirr_seg->area_count; + lp->stripe_size = mirr_seg->stripe_size; + } else if (!strcmp(mirr_seg->segtype->name, _lv_type_names[LV_TYPE_RAID10])) { /* FIXME Warn if command line values are being overridden? */ lp->stripes = mirr_seg->area_count / seg_mirrors; lp->stripe_size = mirr_seg->stripe_size; @@ -4791,9 +4866,10 @@ static int _lvresize_adjust_extents(struct cmd_context *cmd, struct logical_volu /* FIXME We will need to support resize for metadata LV as well, * and data LV could be any type (i.e. mirror)) */ dm_list_iterate_items(seg, seg_mirrors ? &seg_lv(mirr_seg, 0)->segments : &lv->segments) { - /* Allow through "striped" and RAID 4/5/6/10 */ + /* Allow through "striped" and RAID 0/4/5/6/10 */ if (!seg_is_striped(seg) && (!seg_is_raid(seg) || seg_is_mirrored(seg)) && + strcmp(seg->segtype->name, _lv_type_names[LV_TYPE_RAID0]) && strcmp(seg->segtype->name, _lv_type_names[LV_TYPE_RAID10])) continue; @@ -5122,7 +5198,7 @@ static struct logical_volume *_lvresize_volume(struct cmd_context *cmd, log_error("Filesystem check failed."); return NULL; } - /* some filesystems supports online resize */ + /* some filesystems support online resize */ } /* FIXME forks here */ @@ -5497,8 +5573,8 @@ struct dm_list *build_parallel_areas_from_lv(struct logical_volume *lv, return_NULL; current_le = spvs->le + spvs->len; - raid_multiple = (seg->segtype->parity_devs) ? - seg->area_count - seg->segtype->parity_devs : 1; + raid_multiple = (seg_is_mirror(seg) || seg_is_raid1(seg)) ? 1 : + seg->area_count - seg->segtype->parity_devs; } while ((current_le * raid_multiple) < lv->le_count); if (create_single_list) { @@ -7034,14 +7110,16 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, return NULL; } - /* FIXME This will not pass cluster lock! */ - init_mirror_in_sync(lp->nosync); + if (!seg_is_any_raid0(lp)) { + /* FIXME: this will not pass cluster lock! */ + init_mirror_in_sync(lp->nosync); - if (lp->nosync) { - log_warn("WARNING: New %s won't be synchronised. " - "Don't read what you didn't write!", - lp->segtype->name); - status |= LV_NOTSYNCED; + if (lp->nosync) { + log_warn("WARNING: New %s won't be synchronised. " + "Don't read what you didn't write!", + lp->segtype->name); + status |= LV_NOTSYNCED; + } } lp->region_size = adjusted_mirror_region_size(vg->extent_size, @@ -7208,8 +7286,10 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, goto revert_new_lv; } } else if (seg_is_raid(lp)) { - first_seg(lv)->min_recovery_rate = lp->min_recovery_rate; - first_seg(lv)->max_recovery_rate = lp->max_recovery_rate; + if (!seg_is_any_raid0(first_seg(lv))) { + first_seg(lv)->min_recovery_rate = lp->min_recovery_rate; + first_seg(lv)->max_recovery_rate = lp->max_recovery_rate; + } } else if (seg_is_thin_pool(lp)) { first_seg(lv)->chunk_size = lp->chunk_size; first_seg(lv)->zero_new_blocks = lp->zero ? 1 : 0; diff --git a/lib/metadata/merge.c b/lib/metadata/merge.c index 7fd5a07..2b1c42d 100644 --- a/lib/metadata/merge.c +++ b/lib/metadata/merge.c @@ -412,7 +412,7 @@ int check_lv_segments(struct logical_volume *lv, int complete_vg) continue; if (lv == seg_lv(seg, s)) seg_found++; - if (seg_is_raid(seg) && (lv == seg_metalv(seg, s))) + if (seg_is_raid(seg) && seg->meta_areas && (lv == seg_metalv(seg, s))) seg_found++; } if (seg_is_replicator_dev(seg)) { diff --git a/lib/metadata/metadata-exported.h b/lib/metadata/metadata-exported.h index 0e52153..9ed411a 100644 --- a/lib/metadata/metadata-exported.h +++ b/lib/metadata/metadata-exported.h @@ -1109,6 +1109,9 @@ struct logical_volume *first_replicator_dev(const struct logical_volume *lv); /* -- metadata/replicator_manip.c */ /* ++ metadata/raid_manip.c */ +uint32_t raid_rmeta_extents_delta(struct cmd_context *cmd, + uint32_t rimage_extents_cur, uint32_t rimage_extents_new, + uint32_t region_size, uint32_t extent_size); int lv_is_raid_with_tracking(const struct logical_volume *lv); uint32_t lv_raid_image_count(const struct logical_volume *lv); int lv_raid_change_image_count(struct logical_volume *lv, @@ -1118,8 +1121,13 @@ int lv_raid_split(struct logical_volume *lv, const char *split_name, int lv_raid_split_and_track(struct logical_volume *lv, struct dm_list *splittable_pvs); int lv_raid_merge(struct logical_volume *lv); -int lv_raid_reshape(struct logical_volume *lv, - const struct segment_type *new_segtype); +int lv_raid_convert(struct logical_volume *lv, + const struct segment_type *new_segtype, + int yes, int force, + const unsigned image_count, + const unsigned stripes, + const unsigned new_stripe_size, + struct dm_list *allocate_pvs); int lv_raid_replace(struct logical_volume *lv, struct dm_list *remove_pvs, struct dm_list *allocate_pvs); int lv_raid_remove_missing(struct logical_volume *lv); diff --git a/lib/metadata/raid_manip.c b/lib/metadata/raid_manip.c index 64cfb3f..aa3e250 100644 --- a/lib/metadata/raid_manip.c +++ b/lib/metadata/raid_manip.c @@ -22,6 +22,14 @@ #include "lv_alloc.h" #include "lvm-string.h" +#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*a)) + +/* Return data images count for @total_rimages depending on @seg's type */ +static uint32_t _data_rimages_count(const struct lv_segment *seg, const uint32_t total_rimages) +{ + return total_rimages - seg->segtype->parity_devs; +} + static int _lv_is_raid_with_tracking(const struct logical_volume *lv, struct logical_volume **tracking) { @@ -75,6 +83,26 @@ static int _activate_sublv_preserving_excl(struct logical_volume *top_lv, } /* + * Deactivate and remove the LVs on @removal_lvs list from @vg + * + * Returns 1 on success or 0 on failure + */ +static int _deactivate_and_remove_lvs(struct volume_group *vg, struct dm_list *removal_lvs) +{ + struct lv_list *lvl; + + dm_list_iterate_items(lvl, removal_lvs) { + if (!deactivate_lv(vg->cmd, lvl->lv)) + return_0; + + if (!lv_remove(lvl->lv)) + return_0; + } + + return 1; +} + +/* * _raid_in_sync * @lv * @@ -87,6 +115,10 @@ static int _activate_sublv_preserving_excl(struct logical_volume *top_lv, static int _raid_in_sync(struct logical_volume *lv) { dm_percent_t sync_percent; + struct lv_segment *seg = first_seg(lv); + + if (seg_is_striped(seg) || seg_is_any_raid0(seg)) + return 1; if (!lv_raid_percent(lv, &sync_percent)) { log_error("Unable to determine sync status of %s/%s.", @@ -249,6 +281,24 @@ static int _clear_lvs(struct dm_list *lv_list) return 1; } +/* HM + * + * Check for maximum supported raid devices imposed by the kernel MD + * maximum device limits _and_ dm-raid superblock bitfield constraints + * + * Returns 1 on success or 0 on failure + */ +static int _check_max_raid_devices(uint32_t image_count) +{ + if (image_count > DEFAULT_RAID_MAX_IMAGES) { + log_error("Unable to handle arrays with more than %u devices", + DEFAULT_RAID_MAX_IMAGES); + return 0; + } + + return 1; +} + /* * _shift_and_rename_image_components * @seg: Top-level RAID segment @@ -361,277 +411,565 @@ static char *_generate_raid_name(struct logical_volume *lv, return name; } + /* - * Create an LV of specified type. Set visible after creation. - * This function does not make metadata changes. + * Eliminate the extracted LVs on @removal_lvs from @vg incl. vg write, commit and backup */ -static struct logical_volume *_alloc_image_component(struct logical_volume *lv, - const char *alt_base_name, - struct alloc_handle *ah, uint32_t first_area, - uint64_t type) +static int _eliminate_extracted_lvs(struct volume_group *vg, struct dm_list *removal_lvs) { - uint64_t status; - char img_name[NAME_LEN]; - const char *type_suffix; - struct logical_volume *tmp_lv; - const struct segment_type *segtype; + if (!removal_lvs || dm_list_empty(removal_lvs)) + return 1; - if (!ah) { - log_error(INTERNAL_ERROR - "Stand-alone %s area allocation not implemented", - (type == RAID_META) ? "metadata" : "data"); - return 0; - } + sync_local_dev_names(vg->cmd); - switch (type) { - case RAID_META: - type_suffix = "rmeta"; - break; - case RAID_IMAGE: - type_suffix = "rimage"; - break; - default: - log_error(INTERNAL_ERROR - "Bad type provided to _alloc_raid_component."); + if (!_deactivate_and_remove_lvs(vg, removal_lvs)) return 0; - } - if (dm_snprintf(img_name, sizeof(img_name), "%s_%s_%%d", - (alt_base_name) ? : lv->name, type_suffix) < 0) + if (!vg_write(vg) || !vg_commit(vg)) return_0; - status = LVM_READ | LVM_WRITE | LV_REBUILD | type; - if (!(tmp_lv = lv_create_empty(img_name, NULL, status, ALLOC_INHERIT, lv->vg))) { - log_error("Failed to allocate new raid component, %s.", img_name); - return 0; + if (!backup(vg)) + log_error("Backup of VG %s failed after removal of image component LVs", vg->name); + + return 1; +} + +/* + * _extract_image_component + * @seg + * @idx: The index in the areas array to remove + * @data: != 0 to extract data dev / 0 extract metadata_dev + * @extracted_lv: The displaced metadata/data LV + */ +static int _extract_image_component(struct lv_segment *seg, + uint64_t type, uint32_t idx, + struct logical_volume **extracted_lv) +{ + struct logical_volume *lv; + + switch (type) { + case RAID_META: + lv = seg_metalv(seg, idx); + seg_metalv(seg, idx) = NULL; + seg_metatype(seg, idx) = AREA_UNASSIGNED; + break; + case RAID_IMAGE: + lv = seg_lv(seg, idx); + seg_lv(seg, idx) = NULL; + seg_type(seg, idx) = AREA_UNASSIGNED; + break; + default: + log_error(INTERNAL_ERROR "Bad type provided to %s.", __func__); + return 0; } - if (!(segtype = get_segtype_from_string(lv->vg->cmd, "striped"))) + if (!lv) + return 0; + + log_very_verbose("Extracting image component %s from %s", lv->name, lvseg_name(seg)); + lv->status &= ~(type | RAID); + lv_set_visible(lv); + + /* release lv areas */ + if (!remove_seg_from_segs_using_this_lv(lv, seg)) return_0; - if (!lv_add_segment(ah, first_area, 1, tmp_lv, segtype, 0, status, 0)) { - log_error("Failed to add segment to LV, %s", img_name); - return 0; - } + if (!(lv->name = _generate_raid_name(lv, "extracted", -1))) + return_0; - lv_set_visible(tmp_lv); + if (!replace_lv_with_error_segment(lv)) + return_0; - return tmp_lv; + *extracted_lv = lv; + + return 1; } -static int _alloc_image_components(struct logical_volume *lv, - struct dm_list *pvs, uint32_t count, - struct dm_list *new_meta_lvs, - struct dm_list *new_data_lvs) +/* Remove sublvs fo @type from @lv starting at @idx and put them on @removal_lvs */ +static int _extract_image_component_list(struct lv_segment *seg, + uint64_t type, uint32_t idx, + struct dm_list *removal_lvs) { uint32_t s; - uint32_t region_size; - uint32_t extents; - struct lv_segment *seg = first_seg(lv); - const struct segment_type *segtype; - struct alloc_handle *ah; - struct dm_list *parallel_areas; + unsigned i; struct lv_list *lvl_array; - if (!(lvl_array = dm_pool_alloc(lv->vg->vgmem, - sizeof(*lvl_array) * count * 2))) - return_0; + if (idx >= seg->area_count) { + log_error(INTERNAL_ERROR "area index too large for segment"); + return 0; + } - if (!(parallel_areas = build_parallel_areas_from_lv(lv, 0, 1))) + if (!(lvl_array = dm_pool_alloc(seg_lv(seg, 0)->vg->vgmem, sizeof(*lvl_array) * (seg->area_count - idx)))) return_0; - if (seg_is_linear(seg)) - region_size = get_default_region_size(lv->vg->cmd); + for (i = 0, s = idx; s < seg->area_count; s++) { + if (!_extract_image_component(seg, type, s, &lvl_array[i].lv)) + return 0; + + dm_list_add(removal_lvs, &lvl_array[i].list); + i++; + } + + if (type == RAID_IMAGE) + seg->areas = NULL; else - region_size = seg->region_size; + seg->meta_areas = NULL; - if (seg_is_raid(seg)) - segtype = seg->segtype; - else if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_RAID1))) - return_0; + return 1; +} - /* - * The number of extents is based on the RAID type. For RAID1, - * each of the rimages is the same size - 'le_count'. However - * for RAID 4/5/6, the stripes add together (NOT including the parity - * devices) to equal 'le_count'. Thus, when we are allocating - * individual devies, we must specify how large the individual device - * is along with the number we want ('count'). - */ - extents = (segtype->parity_devs) ? - (lv->le_count / (seg->area_count - segtype->parity_devs)) : - lv->le_count; +/* Add new @lvs to @lv at @area_offset */ +static int _add_image_component_list(struct lv_segment *seg, int delete_from_list, + uint64_t lv_flags, struct dm_list *lvs, uint32_t area_offset) +{ + uint32_t s = area_offset; + struct lv_list *lvl, *tmp; - if (!(ah = allocate_extents(lv->vg, NULL, segtype, 0, count, count, - region_size, extents, pvs, - lv->alloc, 0, parallel_areas))) - return_0; + dm_list_iterate_items_safe(lvl, tmp, lvs) { + if (delete_from_list) + dm_list_del(&lvl->list); - for (s = 0; s < count; ++s) { - /* - * The allocation areas are grouped together. First - * come the rimage allocated areas, then come the metadata - * allocated areas. Thus, the metadata areas are pulled - * from 's + count'. - */ - if (!(lvl_array[s + count].lv = - _alloc_image_component(lv, NULL, ah, s + count, RAID_META))) { - alloc_destroy(ah); - return_0; - } - dm_list_add(new_meta_lvs, &(lvl_array[s + count].list)); + if (lv_flags & VISIBLE_LV) + lv_set_visible(lvl->lv); + else + lv_set_hidden(lvl->lv); - if (!(lvl_array[s].lv = - _alloc_image_component(lv, NULL, ah, s, RAID_IMAGE))) { - alloc_destroy(ah); - return_0; + if (lv_flags & LV_REBUILD) + lvl->lv->status |= LV_REBUILD; + else + lvl->lv->status &= ~LV_REBUILD; + + if (!set_lv_segment_area_lv(seg, s++, lvl->lv, 0 /* le */, + lvl->lv->status)) { + log_error("Failed to add sublv %s", lvl->lv->name); + return 0; } - dm_list_add(new_data_lvs, &(lvl_array[s].list)); } - alloc_destroy(ah); - return 1; } +/* Calculate absolute amount of metadata device extens based on @rimage_extents, @region_size and @extens_size */ +static uint32_t _raid_rmeta_extents(struct cmd_context *cmd, + uint32_t rimage_extents, uint32_t region_size, uint32_t extent_size) +{ + uint64_t bytes, regions, sectors; + + region_size = region_size ?: get_default_region_size(cmd); + regions = rimage_extents * extent_size / region_size; + + /* raid and bitmap superblocks + region bytes */ + bytes = 2 * 4096 + dm_div_up(regions, 8); + sectors = dm_div_up(bytes, 512); + + return dm_div_up(sectors, extent_size); +} + +/* + * Returns raid metadata device size _change_ in extents, algorithm from dm-raid ("raid" target) kernel code. + */ +uint32_t raid_rmeta_extents_delta(struct cmd_context *cmd, + uint32_t rimage_extents_cur, uint32_t rimage_extents_new, + uint32_t region_size, uint32_t extent_size) +{ + uint32_t rmeta_extents_cur = _raid_rmeta_extents(cmd, rimage_extents_cur, region_size, extent_size); + uint32_t rmeta_extents_new = _raid_rmeta_extents(cmd, rimage_extents_new, region_size, extent_size); + + /* Need minimum size on LV creation */ + if (!rimage_extents_cur) + return rmeta_extents_new; + + /* Need current size on LV deletion */ + if (!rimage_extents_new) + return rmeta_extents_cur; + + if (rmeta_extents_new == rmeta_extents_cur) + return 0; + + /* Extending/reducing... */ + return rmeta_extents_new > rmeta_extents_cur ? + rmeta_extents_new - rmeta_extents_cur : + rmeta_extents_cur - rmeta_extents_new; +} + + /* * _alloc_rmeta_for_lv * @lv * - * Allocate a RAID metadata device for the given LV (which is or will + * Allocate RAID metadata device for the given LV (which is or will * be the associated RAID data device). The new metadata device must * be allocated from the same PV(s) as the data device. */ +static struct logical_volume *_alloc_image_component(struct logical_volume *lv, + const char *alt_base_name, + struct alloc_handle *ah, uint32_t first_area, + uint64_t type); static int _alloc_rmeta_for_lv(struct logical_volume *data_lv, struct logical_volume **meta_lv) { + int r = 1; + char *p; struct dm_list allocatable_pvs; struct alloc_handle *ah; struct lv_segment *seg = first_seg(data_lv); - char *p, base_name[NAME_LEN]; dm_list_init(&allocatable_pvs); if (!seg_is_linear(seg)) { log_error(INTERNAL_ERROR "Unable to allocate RAID metadata " - "area for non-linear LV, %s", data_lv->name); + "area for non-linear LV, %s", data_lv->name); return 0; } - (void) dm_strncpy(base_name, data_lv->name, sizeof(base_name)); - if ((p = strstr(base_name, "_mimage_"))) + if ((p = strstr(data_lv->name, "_mimage_")) || + (p = strstr(data_lv->name, "_rimage_"))) *p = '\0'; if (!get_pv_list_for_lv(data_lv->vg->cmd->mem, data_lv, &allocatable_pvs)) { - log_error("Failed to build list of PVs for %s/%s", - data_lv->vg->name, data_lv->name); + log_error("Failed to build list of PVs for %s", display_lvname(data_lv)); return 0; } - if (!(ah = allocate_extents(data_lv->vg, NULL, seg->segtype, 0, 1, 0, - seg->region_size, - 1 /*RAID_METADATA_AREA_LEN*/, - &allocatable_pvs, data_lv->alloc, 0, NULL))) + if (!(ah = allocate_extents(data_lv->vg, NULL, seg->segtype, + 0, 1, 0, + seg->region_size, + _raid_rmeta_extents(data_lv->vg->cmd, data_lv->le_count, + seg->region_size, data_lv->vg->extent_size), + &allocatable_pvs, data_lv->alloc, 0, NULL))) return_0; - if (!(*meta_lv = _alloc_image_component(data_lv, base_name, ah, 0, RAID_META))) { - alloc_destroy(ah); - return_0; - } + if (!(*meta_lv = _alloc_image_component(data_lv, data_lv->name, ah, 0, RAID_META))) + r = 0; + + if (p) + *p = '_'; alloc_destroy(ah); + return r; +} + +/* + * Allocate metadata devs for all @new_data_devs and link them to list @new_meta_lvs + */ +static int _alloc_rmeta_devs_for_rimage_devs(struct logical_volume *lv, + struct dm_list *new_data_lvs, + struct dm_list *new_meta_lvs) +{ + uint32_t a = 0, raid_devs = 0; + struct dm_list *l; + struct lv_list *lvl, *lvl_array; + + dm_list_iterate(l, new_data_lvs) + raid_devs++; + + if (!raid_devs) + return 0; + + if (!(lvl_array = dm_pool_zalloc(lv->vg->vgmem, raid_devs * sizeof(*lvl_array)))) + return 0; + + dm_list_iterate_items(lvl, new_data_lvs) { + log_debug_metadata("Allocating new metadata LV for %s", + lvl->lv->name); + if (!_alloc_rmeta_for_lv(lvl->lv, &lvl_array[a].lv)) { + log_error("Failed to allocate metadata LV for %s in %s", + lvl->lv->name, lv->vg->name); + return 0; + } + + dm_list_add(new_meta_lvs, &lvl_array[a].list); + a++; + } + return 1; } -static int _raid_add_images(struct logical_volume *lv, - uint32_t new_count, struct dm_list *pvs) +/* + * Allocate metadata devs for all data devs of an LV + */ +static int _alloc_rmeta_devs_for_lv(struct logical_volume *lv, struct dm_list *meta_lvs) { - int rebuild_flag_cleared = 0; uint32_t s; - uint32_t old_count = lv_raid_image_count(lv); - uint32_t count = new_count - old_count; - uint64_t status_mask = -1; + struct lv_list *lvl_array; + struct dm_list data_lvs; struct lv_segment *seg = first_seg(lv); - struct dm_list meta_lvs, data_lvs; - struct lv_list *lvl; - struct lv_segment_area *new_areas; - if (lv->status & LV_NOTSYNCED) { - log_error("Can't add image to out-of-sync RAID LV:" - " use 'lvchange --resync' first."); + dm_list_init(&data_lvs); + + if (seg->meta_areas) { + log_error(INTERNAL_ERROR "Metadata LVs exists in %s", display_lvname(lv)); return 0; } - if (!_raid_in_sync(lv)) { - log_error("Can't add image to RAID LV that" - " is still initializing."); + if (!(seg->meta_areas = dm_pool_zalloc(lv->vg->vgmem, + seg->area_count * sizeof(*seg->meta_areas)))) return 0; - } - if (!archive(lv->vg)) + if (!(lvl_array = dm_pool_alloc(lv->vg->vgmem, seg->area_count * sizeof(*lvl_array)))) return_0; - dm_list_init(&meta_lvs); /* For image addition */ - dm_list_init(&data_lvs); /* For image addition */ + for (s = 0; s < seg->area_count; s++) { + lvl_array[s].lv = seg_lv(seg, s); + dm_list_add(&data_lvs, &lvl_array[s].list); + } - /* - * If the segtype is linear, then we must allocate a metadata - * LV to accompany it. - */ - if (seg_is_linear(seg)) { - /* A complete resync will be done, no need to mark each sub-lv */ - status_mask = ~(LV_REBUILD); + if (!_alloc_rmeta_devs_for_rimage_devs(lv, &data_lvs, meta_lvs)) { + log_error("Failed to allocate metadata LVs for %s", lv->name); + return 0; + } - if (!(lvl = dm_pool_alloc(lv->vg->vgmem, sizeof(*lvl)))) { - log_error("Memory allocation failed"); - return 0; - } + return 1; +} - if (!_alloc_rmeta_for_lv(lv, &lvl->lv)) - return_0; +/* + * Create an LV of specified type. Set visible after creation. + * This function does not make metadata changes. + */ +static struct logical_volume *_alloc_image_component(struct logical_volume *lv, const char *alt_base_name, + struct alloc_handle *ah, uint32_t first_area, + uint64_t type) +{ + uint64_t status = RAID | LVM_READ | LVM_WRITE | type; + char img_name[NAME_LEN]; + const char *type_suffix; + struct logical_volume *tmp_lv; + const struct segment_type *segtype; - dm_list_add(&meta_lvs, &lvl->list); - } else if (!seg_is_raid(seg)) { - log_error("Unable to add RAID images to %s of segment type %s", - lv->name, lvseg_name(seg)); - return 0; + switch (type) { + case RAID_META: + type_suffix = "rmeta"; + break; + case RAID_IMAGE: + type_suffix = "rimage"; + status |= LV_REBUILD; + break; + default: + log_error(INTERNAL_ERROR "Bad type provided to %s.", __func__); + return 0; } - if (!_alloc_image_components(lv, pvs, count, &meta_lvs, &data_lvs)) + if (dm_snprintf(img_name, sizeof(img_name), "%s_%s_%%d", + alt_base_name ?: lv->name, type_suffix) < 0) return_0; - /* - * If linear, we must correct data LV names. They are off-by-one - * because the linear volume hasn't taken its proper name of "_rimage_0" - * yet. This action must be done before '_clear_lvs' because it - * commits the LVM metadata before clearing the LVs. - */ - if (seg_is_linear(seg)) { - struct dm_list *l; - struct lv_list *lvl_tmp; - dm_list_iterate(l, &data_lvs) { - if (l == dm_list_last(&data_lvs)) { - lvl = dm_list_item(l, struct lv_list); - if (!(lvl->lv->name = _generate_raid_name(lv, "rimage", count))) - return_0; - continue; - } - lvl = dm_list_item(l, struct lv_list); - lvl_tmp = dm_list_item(l->n, struct lv_list); - lvl->lv->name = lvl_tmp->lv->name; - } + if (!(tmp_lv = lv_create_empty(img_name, NULL, status, ALLOC_INHERIT, lv->vg))) { + log_error("Failed to allocate new raid component, %s.", img_name); + return 0; } - /* Metadata LVs must be cleared before being added to the array */ - if (!_clear_lvs(&meta_lvs)) - goto fail; + /* If no allocation requested, leave it to the empty LV (needed for striped -> raid0 takeover) */ + if (ah) { + if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; - if (seg_is_linear(seg)) { - first_seg(lv)->status |= RAID_IMAGE; - if (!insert_layer_for_lv(lv->vg->cmd, lv, + if (!lv_add_segment(ah, first_area, 1, tmp_lv, segtype, 0, status, 0)) { + log_error("Failed to add segment to LV, %s", img_name); + return 0; + } + + first_seg(tmp_lv)->status |= SEG_RAID; + } + + lv_set_visible(tmp_lv); + + return tmp_lv; +} + +/* + * Create @count new image component pairs for @lv and return them in + * @new_meta_lvs and @new_data_lvs allocating space if @allocate is set. + * + * Use @pvs list for allocation if set, else just create empty image LVs. + */ +static int _alloc_image_components(struct logical_volume *lv, + struct dm_list *pvs, uint32_t count, + struct dm_list *meta_lvs, + struct dm_list *data_lvs) +{ + int r = 0; + uint32_t s, extents; + struct lv_segment *seg = first_seg(lv); + const struct segment_type *segtype; + struct alloc_handle *ah; + struct dm_list *parallel_areas; + struct lv_list *lvl_array; + + if (!meta_lvs && !data_lvs) + return 0; + + if (!(lvl_array = dm_pool_alloc(lv->vg->vgmem, 2 * count * sizeof(*lvl_array)))) + return_0; + + /* If this is an image addition to an existing raid set, use its type... */ + if (seg_is_raid(seg)) + segtype = seg->segtype; + + /* .. if not, set it to raid1 */ + else if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_RAID1))) + return_0; + + /* + * The number of extents is based on the RAID type. For RAID1/10, + * each of the rimages is the same size - 'le_count'. However + * for RAID 0/4/5/6, the stripes add together (NOT including the parity + * devices) to equal 'le_count'. Thus, when we are allocating + * individual devices, we must specify how large the individual device + * is along with the number we want ('count'). + */ + if (pvs) { + uint32_t stripes, mirrors, metadata_area_count = count; + + if (!(parallel_areas = build_parallel_areas_from_lv(lv, 0, 1))) + return_0; + + + /* Amount of extents for the rimage device(s) */ + if (segtype_is_striped_raid(seg->segtype)) { + stripes = count; + mirrors = 1; + extents = count * (lv->le_count / _data_rimages_count(seg, seg->area_count)); + + } else { + stripes = 1; + mirrors = count; + extents = lv->le_count; + } + + if (!(ah = allocate_extents(lv->vg, NULL, segtype, + stripes, mirrors, metadata_area_count, + seg->region_size, extents, + pvs, lv->alloc, 0, parallel_areas))) + return_0; + + } else + ah = NULL; + + for (s = 0; s < count; s++) { + /* + * The allocation areas are grouped together. First + * come the rimage allocated areas, then come the metadata + * allocated areas. Thus, the metadata areas are pulled + * from 's + count'. + */ + + /* + * If the segtype is raid0, we may avoid allocating metadata LVs + * to accompany the data LVs by not passing in @meta_lvs + */ + if (meta_lvs) { + if (!(lvl_array[s + count].lv = _alloc_image_component(lv, NULL, ah, s + count, RAID_META))) + goto_bad; + + dm_list_add(meta_lvs, &(lvl_array[s + count].list)); + } + + if (data_lvs) { + if (!(lvl_array[s].lv = _alloc_image_component(lv, NULL, ah, s, RAID_IMAGE))) + goto_bad; + + dm_list_add(data_lvs, &(lvl_array[s].list)); + } + } + + r = 1; +bad: + if (ah) + alloc_destroy(ah); + + return r; +} + +static int _raid_add_images(struct logical_volume *lv, + uint32_t new_count, struct dm_list *pvs) +{ + int rebuild_flag_cleared = 0; + uint32_t s; + uint32_t old_count = lv_raid_image_count(lv); + uint32_t count = new_count - old_count; + uint64_t status_mask = -1; + struct lv_segment *seg = first_seg(lv); + struct dm_list meta_lvs, data_lvs; + struct lv_list *lvl; + struct lv_segment_area *new_areas; + + if (lv->status & LV_NOTSYNCED) { + log_error("Can't add image to out-of-sync RAID LV:" + " use 'lvchange --resync' first."); + return 0; + } + + if (!_raid_in_sync(lv)) { + log_error("Can't add image to RAID LV that" + " is still initializing."); + return 0; + } + + if (!archive(lv->vg)) + return_0; + + dm_list_init(&meta_lvs); /* For image addition */ + dm_list_init(&data_lvs); /* For image addition */ + + /* + * If the segtype is linear, then we must allocate a metadata + * LV to accompany it. + */ + if (seg_is_linear(seg)) { + /* A complete resync will be done, no need to mark each sub-lv */ + status_mask = ~(LV_REBUILD); + + if (!(lvl = dm_pool_alloc(lv->vg->vgmem, sizeof(*lvl)))) { + log_error("Memory allocation failed"); + return 0; + } + + if (!_alloc_rmeta_for_lv(lv, &lvl->lv)) + return_0; + + dm_list_add(&meta_lvs, &lvl->list); + } else if (!seg_is_raid(seg)) { + log_error("Unable to add RAID images to %s of segment type %s", + lv->name, lvseg_name(seg)); + return 0; + } + + if (!_alloc_image_components(lv, pvs, count, &meta_lvs, &data_lvs)) + return_0; + + /* + * If linear, we must correct data LV names. They are off-by-one + * because the linear volume hasn't taken its proper name of "_rimage_0" + * yet. This action must be done before '_clear_lvs' because it + * commits the LVM metadata before clearing the LVs. + */ + if (seg_is_linear(seg)) { + struct dm_list *l; + struct lv_list *lvl_tmp; + + dm_list_iterate(l, &data_lvs) { + if (l == dm_list_last(&data_lvs)) { + lvl = dm_list_item(l, struct lv_list); + if (!(lvl->lv->name = _generate_raid_name(lv, "rimage", count))) + return_0; + continue; + } + lvl = dm_list_item(l, struct lv_list); + lvl_tmp = dm_list_item(l->n, struct lv_list); + lvl->lv->name = lvl_tmp->lv->name; + } + } + + /* Metadata LVs must be cleared before being added to the array */ + if (!_clear_lvs(&meta_lvs)) + goto fail; + + if (seg_is_linear(seg)) { + first_seg(lv)->status |= RAID_IMAGE; + if (!insert_layer_for_lv(lv->vg->cmd, lv, RAID | LVM_READ | LVM_WRITE, "_rimage_0")) return_0; @@ -1069,6 +1407,41 @@ int lv_raid_change_image_count(struct logical_volume *lv, return _raid_add_images(lv, new_count, pvs); } +/* + * Add/remove metadata areas to/from raid0 + * + * Update metadata and reload mappings if @update_and_reload + */ +static int _alloc_and_add_rmeta_devs_for_lv(struct logical_volume *lv) +{ + struct lv_segment *seg = first_seg(lv); + struct dm_list meta_lvs; + + dm_list_init(&meta_lvs); + + log_debug_metadata("Allocating metadata LVs for %s", display_lvname(lv)); + if (!_alloc_rmeta_devs_for_lv(lv, &meta_lvs)) { + log_error("Failed to allocate metadata LVs for %s", display_lvname(lv)); + return_0; + } + + /* Metadata LVs must be cleared before being added to the array */ + log_debug_metadata("Clearing newly allocated metadata LVs for %s", display_lvname(lv)); + if (!_clear_lvs(&meta_lvs)) { + log_error("Failed to initialize metadata LVs for %s", display_lvname(lv)); + return_0; + } + + /* Set segment areas for metadata sub_lvs */ + log_debug_metadata("Adding newly allocated metadata LVs to %s", display_lvname(lv)); + if (!_add_image_component_list(seg, 1, 0, &meta_lvs, 0)) { + log_error("Failed to add newly allocated metadata LVs to %s", display_lvname(lv)); + return_0; + } + + return 1; +} + int lv_raid_split(struct logical_volume *lv, const char *split_name, uint32_t new_count, struct dm_list *splittable_pvs) { @@ -1342,50 +1715,61 @@ int lv_raid_merge(struct logical_volume *image_lv) return 1; } -static int _convert_mirror_to_raid1(struct logical_volume *lv, - const struct segment_type *new_segtype) +/* + * Rename all data sub LVs of @lv to mirror + * or raid name depending on @direction + */ +enum mirror_raid_conv { mirror_to_raid1 = 0, raid1_to_mirror }; +static int _rename_data_lvs(struct logical_volume *lv, enum mirror_raid_conv direction) { uint32_t s; + char *p; struct lv_segment *seg = first_seg(lv); - struct lv_list lvl_array[seg->area_count], *lvl; - struct dm_list meta_lvs; - struct lv_segment_area *meta_areas; - char *new_name; + static struct { + char type_char; + uint64_t set_flag; + uint64_t reset_flag; + } conv[] = { + { 'r', RAID_IMAGE , MIRROR_IMAGE }, + { 'm', MIRROR_IMAGE, RAID_IMAGE } + }; - dm_list_init(&meta_lvs); + for (s = 0; s < seg->area_count; ++s) { + struct logical_volume *dlv = seg_lv(seg, s); - if (!_raid_in_sync(lv)) { - log_error("Unable to convert %s/%s while it is not in-sync", - lv->vg->name, lv->name); - return 0; - } + if (!((p = strstr(dlv->name, "_mimage_")) || + (p = strstr(dlv->name, "_rimage_")))) { + log_error(INTERNAL_ERROR "name lags image part"); + return 0; + } - if (!(meta_areas = dm_pool_zalloc(lv->vg->vgmem, - lv_mirror_count(lv) * sizeof(*meta_areas)))) { - log_error("Failed to allocate meta areas memory."); - return 0; + *(p+1) = conv[direction].type_char; + log_debug_metadata("data lv renamed to %s", dlv->name); + + dlv->status &= ~conv[direction].reset_flag; + dlv->status |= conv[direction].set_flag; } - if (!archive(lv->vg)) - return_0; + return 1; +} - for (s = 0; s < seg->area_count; s++) { - log_debug_metadata("Allocating new metadata LV for %s", - seg_lv(seg, s)->name); - if (!_alloc_rmeta_for_lv(seg_lv(seg, s), &(lvl_array[s].lv))) { - log_error("Failed to allocate metadata LV for %s in %s", - seg_lv(seg, s)->name, lv->name); - return 0; - } - dm_list_add(&meta_lvs, &(lvl_array[s].list)); - } +/* + * Convert @lv with "mirror" mapping to "raid1". + * + * Returns: 1 on success, 0 on failure + */ +static int _convert_mirror_to_raid1(struct logical_volume *lv, + const struct segment_type *new_segtype, + int update_and_reload) +{ + struct lv_segment *seg = first_seg(lv); - log_debug_metadata("Clearing newly allocated metadata LVs"); - if (!_clear_lvs(&meta_lvs)) { - log_error("Failed to initialize metadata LVs"); + if (!seg_is_mirrored(seg)) { + log_error(INTERNAL_ERROR "mirror conversion supported only"); return 0; } + /* Remove any mirror log */ if (seg->log_lv) { log_debug_metadata("Removing mirror log, %s", seg->log_lv->name); if (!remove_mirror_log(lv->vg->cmd, lv, NULL, 0)) { @@ -1394,85 +1778,674 @@ static int _convert_mirror_to_raid1(struct logical_volume *lv, } } - seg->meta_areas = meta_areas; - s = 0; + /* Allocate metadata devs for all mimage ones (writes+commits metadata) */ + if (!_alloc_and_add_rmeta_devs_for_lv(lv)) + return 0; - dm_list_iterate_items(lvl, &meta_lvs) { - log_debug_metadata("Adding %s to %s", lvl->lv->name, lv->name); + /* Rename all data sub lvs for "*_rimage_*" to "*_mimage_*" */ + if (!_rename_data_lvs(lv, mirror_to_raid1)) + return 0; - /* Images are known to be in-sync */ - lvl->lv->status &= ~LV_REBUILD; - first_seg(lvl->lv)->status &= ~LV_REBUILD; - lv_set_hidden(lvl->lv); + init_mirror_in_sync(1); - if (!set_lv_segment_area_lv(seg, s, lvl->lv, 0, - lvl->lv->status)) { - log_error("Failed to add %s to %s", - lvl->lv->name, lv->name); + log_debug_metadata("Setting new segtype and status of %s", display_lvname(lv)); + seg->segtype = new_segtype; + lv->status &= ~(MIRROR | MIRRORED); + lv->status |= RAID; + seg->status |= RAID; + + return update_and_reload ? lv_update_and_reload(lv) : 1; +} + +/* Begin: striped -> raid0 conversion */ +/* + * + * Helper: add/remove metadata areas to/from raid0 + * + * Update metadata and reload mappings if @update_and_reload + */ +static int _raid0_add_or_remove_metadata_lvs(struct logical_volume *lv, + int update_and_reload, + struct dm_list *removal_lvs) +{ + const char *raid_type; + struct lv_segment *seg = first_seg(lv); + + if (seg->meta_areas) { + log_debug_metadata("Extracting metadata LVs"); + if (!removal_lvs) { + log_error(INTERNAL_ERROR "Called with NULL removal LVs list"); return 0; } - s++; + + if (!_extract_image_component_list(seg, RAID_META, 0, removal_lvs)) { + log_error(INTERNAL_ERROR "Failed to extract metadata LVs"); + return 0; + } + + seg->meta_areas = NULL; + raid_type = SEG_TYPE_NAME_RAID0; + + } else { + if (!_alloc_and_add_rmeta_devs_for_lv(lv)) + return 0; + + raid_type = SEG_TYPE_NAME_RAID0_META; } - for (s = 0; s < seg->area_count; ++s) { - if (!(new_name = _generate_raid_name(lv, "rimage", s))) + if (!(seg->segtype = get_segtype_from_string(lv->vg->cmd, raid_type))) + return_0; + + if (update_and_reload) { + if (!lv_update_and_reload_origin(lv)) return_0; - log_debug_metadata("Renaming %s to %s", seg_lv(seg, s)->name, new_name); - seg_lv(seg, s)->name = new_name; - seg_lv(seg, s)->status &= ~MIRROR_IMAGE; - seg_lv(seg, s)->status |= RAID_IMAGE; + + /* If any residual LVs, eliminate them, write VG, commit it and take a backup */ + return _eliminate_extracted_lvs(lv->vg, removal_lvs); } - init_mirror_in_sync(1); - log_debug_metadata("Setting new segtype for %s", lv->name); - seg->segtype = new_segtype; - lv->status &= ~MIRROR; - lv->status &= ~MIRRORED; + return 1; +} + +/* + * Helper convert striped to raid0 + * + * For @lv, empty hidden LVs in @data_lvs have been created by the caller. + * + * All areas from @lv segments are being moved to new + * segments allocated with area_count=1 for @data_lvs. + * + * Returns: 1 on success, 0 on failure + */ +static int _striped_to_raid0_move_segs_to_raid0_lvs(struct logical_volume *lv, + struct dm_list *data_lvs) +{ + uint32_t s = 0, le; + struct logical_volume *dlv; + struct lv_segment *seg_from, *seg_new; + struct lv_list *lvl; + struct segment_type *segtype; + + if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + dm_list_iterate_items(lvl, data_lvs) { + dlv = lvl->lv; + le = 0; + dm_list_iterate_items(seg_from, &lv->segments) { + uint64_t status = RAID | SEG_RAID | (seg_from->status & (LVM_READ | LVM_WRITE)); + + /* Allocate a segment with one area for each segment in the striped LV */ + if (!(seg_new = alloc_lv_segment(segtype, dlv, + le, seg_from->area_len, + status, + seg_from->stripe_size, NULL, 1 /* area_count */, + seg_from->area_len, seg_from->chunk_size, + 0 /* region_size */, 0, NULL))) + return_0; + + seg_type(seg_new, 0) = AREA_UNASSIGNED; + dm_list_add(&dlv->segments, &seg_new->list); + le += seg_from->area_len; + + /* Move the respective area across to our new segment */ + if (!move_lv_segment_area(seg_new, 0, seg_from, s)) + return_0; + } + + /* Adjust le count and lv size */ + dlv->le_count = le; + dlv->size = (uint64_t) le * lv->vg->extent_size; + s++; + } + + /* Remove the empty segments from the striped LV */ + dm_list_init(&lv->segments); + + return 1; +} + +/* HM Helper: check that @lv has one stripe one, i.e. same stripe count in all of its segements */ +static int _lv_has_one_stripe_zone(struct logical_volume *lv) +{ + struct lv_segment *seg; + unsigned area_count = first_seg(lv)->area_count; + + dm_list_iterate_items(seg, &lv->segments) + if (seg->area_count != area_count) + return 0; + + return 1; +} + +/* + * Helper: convert striped to raid0 + * + * Inserts hidden LVs for all segments and the parallel areas in @lv and moves + * given segments and areas across. + * + * Optionally allocates metadata devs if @alloc_metadata_devs + * Optionally updates metadata and reloads mappings if @update_and_reload + * + * Returns: 1 on success, 0 on failure + */ +static struct lv_segment *_convert_striped_to_raid0(struct logical_volume *lv, + int alloc_metadata_devs, + int update_and_reload) +{ + struct lv_segment *seg = first_seg(lv), *raid0_seg; + unsigned area_count = seg->area_count; + struct segment_type *segtype; + struct dm_list data_lvs; + + if (!seg_is_striped(seg)) { + log_error(INTERNAL_ERROR "Cannot convert non-%s LV %s to %s", + SEG_TYPE_NAME_STRIPED, display_lvname(lv), SEG_TYPE_NAME_RAID0); + return NULL; + } + + /* Check for not (yet) supported varying area_count on multi-segment striped LVs */ + if (!_lv_has_one_stripe_zone(lv)) { + log_error("Cannot convert striped LV %s with varying stripe count to raid0", + display_lvname(lv)); + return NULL; + } + + if (!(segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_RAID0))) + return_NULL; + + /* Allocate empty rimage components */ + dm_list_init(&data_lvs); + if (!_alloc_image_components(lv, NULL, area_count, NULL, &data_lvs)) { + log_error("Failed to allocate empty image components for raid0 LV %s.", + display_lvname(lv)); + return_NULL; + } + + /* Move the AREA_PV areas across to the new rimage components; empties lv->segments */ + if (!_striped_to_raid0_move_segs_to_raid0_lvs(lv, &data_lvs)) { + log_error("Failed to insert linear LVs underneath %s.", display_lvname(lv)); + return_NULL; + } + + /* + * Allocate single segment to hold the image component + * areas based on the first data LVs properties derived + * from the first new raid0 LVs first segment + */ + seg = first_seg(dm_list_item(dm_list_first(&data_lvs), struct lv_list)->lv); + if (!(raid0_seg = alloc_lv_segment(segtype, lv, + 0 /* le */, lv->le_count /* len */, + seg->status, + seg->stripe_size, NULL /* log_lv */, + area_count, lv->le_count, seg->chunk_size, + 0 /* seg->region_size */, 0u /* extents_copied */ , + NULL /* pvmove_source_seg */))) { + log_error("Failed to allocate new raid0 segement for LV %s.", display_lvname(lv)); + return_NULL; + } + + /* Add new single raid0 segment to emptied LV segments list */ + dm_list_add(&lv->segments, &raid0_seg->list); + + /* Add data lvs to the top-level lvs segment; resets LV_REBUILD flag on them */ + if (!_add_image_component_list(raid0_seg, 1, 0, &data_lvs, 0)) + return NULL; + lv->status |= RAID; - seg->status |= RAID; - if (!lv_update_and_reload(lv)) + /* Allocate metadata lvs if requested */ + if (alloc_metadata_devs && !_raid0_add_or_remove_metadata_lvs(lv, 0, NULL)) + return NULL; + + if (update_and_reload && !lv_update_and_reload(lv)) + return NULL; + + return raid0_seg; +} +/* End: striped -> raid0 conversion */ + +/* Begin: raid0 -> striped conversion */ +/* HM Helper: walk the segment lvs of a segment @seg and find smallest area at offset @area_le */ +static uint32_t _smallest_segment_lvs_area(struct lv_segment *seg, uint32_t area_le) +{ + uint32_t r = ~0, s; + + /* Find smallest segment of each of the data image lvs at offset area_le */ + for (s = 0; s < seg->area_count; s++) { + struct lv_segment *seg1 = find_seg_by_le(seg_lv(seg, s), area_le); + + r = min(r, seg1->le + seg1->len - area_le); + } + + return r; +} + +/* HM Helper: Split segments in segment LVs in all areas of @seg at offset @area_le */ +static int _split_area_lvs_segments(struct lv_segment *seg, uint32_t area_le) +{ + uint32_t s; + + /* Make sure that there's segments starting at area_le in all data LVs */ + for (s = 0; s < seg->area_count; s++) + if (area_le < seg_lv(seg, s)->le_count) + if (!lv_split_segment(seg_lv(seg, s), area_le)) { + log_error(INTERNAL_ERROR "splitting data lv segment"); + return_0; + } + + return 1; +} + +/* HM Helper: allocate a new striped segment and add it to list @new_segments */ +static int _alloc_and_add_new_striped_segment(struct logical_volume *lv, + uint32_t le, uint32_t area_len, + struct dm_list *new_segments) +{ + struct lv_segment *seg = first_seg(lv), *new_seg; + struct segment_type *striped_segtype; + + if (!(striped_segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + /* Allocate a segment with seg->area_count areas */ + if (!(new_seg = alloc_lv_segment(striped_segtype, lv, le, area_len * seg->area_count, + seg->status & ~RAID, + seg->stripe_size, NULL, seg->area_count, + area_len, seg->chunk_size, 0, 0, NULL))) return_0; + dm_list_add(new_segments, &new_seg->list); + return 1; } /* - * lv_raid_reshape - * @lv - * @new_segtype + * All areas from @lv image component LV's segments are + * being split at "striped" compatible boundaries and + * moved to @new_segments allocated. * - * Convert an LV from one RAID type (or 'mirror' segtype) to another. + * The metadata+data component LVs are being mapped to an + * error target and linked to @removal_lvs for disposal + * by the caller. * * Returns: 1 on success, 0 on failure */ -int lv_raid_reshape(struct logical_volume *lv, - const struct segment_type *new_segtype) +static int _raid0_to_striped_retrieve_segments_and_lvs(struct logical_volume *lv, + struct dm_list *removal_lvs) +{ + uint32_t s, area_le, area_len, le; + struct lv_segment *data_seg, *seg = first_seg(lv), *seg_to; + struct dm_list new_segments; + + dm_list_init(&new_segments); + + /* + * Walk all segments of all data LVs splitting them up at proper boundaries + * and create the number of new striped segments we need to move them across + */ + area_le = le = 0; + while (le < lv->le_count) { + area_len = _smallest_segment_lvs_area(seg, area_le); + area_le += area_len; + + if (!_split_area_lvs_segments(seg, area_le) || + !_alloc_and_add_new_striped_segment(lv, le, area_len, &new_segments)) + return 0; + + le += area_len * seg->area_count; + } + + /* Now move the prepared split areas across to the new segments */ + area_le = 0; + dm_list_iterate_items(seg_to, &new_segments) { + for (s = 0; s < seg->area_count; s++) { + data_seg = find_seg_by_le(seg_lv(seg, s), area_le); + + /* Move the respective area across to our new segments area */ + if (!move_lv_segment_area(seg_to, s, data_seg, 0)) + return_0; + } + + /* Presumes all data LVs have equal size */ + area_le += data_seg->len; + } + + /* Extract any metadata LVs and the empty data LVs for disposal by the caller */ + if ((seg->meta_areas && !_extract_image_component_list(seg, RAID_META, 0, removal_lvs)) || + !_extract_image_component_list(seg, RAID_IMAGE, 0, removal_lvs)) + return_0; + + /* + * Remove the one segment holding the image component areas + * from the top-level LV, then add the new segments to it + */ + dm_list_del(&seg->list); + dm_list_splice(&lv->segments, &new_segments); + + return 1; +} + +/* + * HM + * + * Helper convert raid0 to striped + * + * Convert a RAID0 set to striped + * + * Returns: 1 on success, 0 on failure + * + * HM FIXME: check last_seg(lv)->reshape_len and reduce LV aprropriately + */ +static int _convert_raid0_to_striped(struct logical_volume *lv, + int update_and_reload, + struct dm_list *removal_lvs) +{ + /* Caller should ensure, but... */ + if (!seg_is_any_raid0(first_seg(lv))) { + log_error(INTERNAL_ERROR "Cannot convert non-%s LV %s to %s", + SEG_TYPE_NAME_RAID0, display_lvname(lv), SEG_TYPE_NAME_STRIPED); + return 0; + } + + /* Move the AREA_PV areas across to new top-level segments of type "striped" */ + if (!_raid0_to_striped_retrieve_segments_and_lvs(lv, removal_lvs)) { + log_error("Failed to retrieve raid0 segments from %s.", lv->name); + return_0; + } + + lv->status &= ~RAID; + + if (!(first_seg(lv)->segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + if (update_and_reload) { + if (!lv_update_and_reload(lv)) + return_0; + + /* Eliminate the residual LVs, write VG, commit it and take a backup */ + return _eliminate_extracted_lvs(lv->vg, removal_lvs); + } + + return 1; +} +/* End: raid0 -> striped conversion */ + +/****************************************************************************/ +/* Begin: various conversions between layers (aka MD takeover) */ +/* + * takeover function argument list definition + * + * All takeover functions and helper functions + * to support them have this list of arguments + */ +#define TAKEOVER_FN_ARGUMENTS \ + struct logical_volume *lv, \ + int yes, int force, \ + const struct segment_type *new_segtype, \ + unsigned new_image_count, \ + const unsigned new_stripes, \ + unsigned new_stripe_size, struct dm_list *allocate_pvs + +/* + * a matrix with types from -> types to holds + * takeover function pointers this prototype + */ +typedef int (*takeover_fn_t)(TAKEOVER_FN_ARGUMENTS); + +/* Return takeover function table index for @segtype */ +static int _takeover_fn_idx(const struct segment_type *segtype) +{ + static uint64_t _segtype_to_idx[] = { + SEG_AREAS_STRIPED, + SEG_MIRROR, + SEG_RAID0, + SEG_RAID0_META, + SEG_RAID1, + }; + unsigned r = ARRAY_SIZE(_segtype_to_idx); + + while (r-- > 0) + if (segtype->flags & _segtype_to_idx[r]) + return r; + + return -1; +} + +/* Macro to define raid takeover helper function header */ +#define TAKEOVER_FN(function_name) \ +static int function_name(TAKEOVER_FN_ARGUMENTS) + +/* + * noop and error takoover handler functions + * to allow for logging that an lv already + * has the requested type or that the requested + * conversion is not possible + */ +/* Noop takeover handler for @lv: logs that LV already is of the requested type */ +TAKEOVER_FN(_noop) +{ + log_warn("Logical volume %s already is of requested type %s", + display_lvname(lv), lvseg_name(first_seg(lv))); + + return 1; +} + +/* Error takeover handler for @lv: logs what's (im)possible to convert to (and mabye added later) */ +TAKEOVER_FN(_error) { struct lv_segment *seg = first_seg(lv); - if (!new_segtype) { - log_error(INTERNAL_ERROR "New segtype not specified"); + log_error("Converting the segment type for %s from %s to %s" + " is not supported.", display_lvname(lv), + lvseg_name(seg), new_segtype->name); + + return 0; +} + + +/* Striped -> raid0 */ +TAKEOVER_FN(_s_r0) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_striped_to_raid0(lv, 0 /* !alloc_metadata_devs */, 1 /* update_and_reload */) ? 1 : 0; +} + +/* Striped -> raid0_meta */ +TAKEOVER_FN(_s_r0m) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_striped_to_raid0(lv, 1 /* alloc_metadata_devs */, 1 /* update_and_reload */) ? 1 : 0; +} + +/* raid0 -> raid0_meta */ +TAKEOVER_FN(_r0_r0m) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _raid0_add_or_remove_metadata_lvs(lv, 1, NULL); +} + +/* raid0_meta -> raid0 */ +TAKEOVER_FN(_r0m_r0) +{ + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _raid0_add_or_remove_metadata_lvs(lv, 1, &removal_lvs); +} + +/* raid0_meta -> striped */ +TAKEOVER_FN(_r0m_s) +{ + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_raid0_to_striped(lv, 1, &removal_lvs); +} + +/* raid0 -> striped */ +TAKEOVER_FN(_r0_s) +{ + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + return _convert_raid0_to_striped(lv, 1, &removal_lvs); +} + +/* Mirror -> raid1 */ +TAKEOVER_FN(_m_r1) +{ + /* Archive metadata */ + if (!archive(lv->vg)) + return_0; + + return _convert_mirror_to_raid1(lv, new_segtype, 1); +} + +/* + * 2-dimensional takeover function matrix defining the + * FSM of possible/impossible or noop (i.e. requested + * conversion already given on the lv) conversions + * + * Rows define from segtype and columns to segtype + */ +static takeover_fn_t _takeover_fn[][5] = { + /* from |, to -> striped mirror raid0 raid0_meta raid1 */ + /* v */ + /* striped */ { _noop, _error, _s_r0, _s_r0m, _error }, + /* mirror */ { _error, _noop, _error, _error, _m_r1 }, + /* raid0 */ { _r0_s, _error, _noop, _r0_r0m, _error }, + /* raid0_meta */ { _r0m_s, _error, _r0m_r0, _noop, _error }, +}; + +/* End: various conversions between layers (aka MD takeover) */ +/****************************************************************************/ + +/* + * lv_raid_convert + * @lv + * @new_segtype + * + * Convert @lv from one RAID type (or 'mirror' segtype) to @new_segtype, + * change RAID algorithm (e.g. left symmetric to right asymmetric), + * add/remove LVs to/from a RAID LV or change stripe sectors + * + * Non dm-raid changes are factored in e.g. "mirror" and "striped" related + * fucntions called from here. + * All the rest of the raid <-> raid conversions go into a function + * _convert_raid_to_raid() of their own called from here. + * + * Returns: 1 on success, 0 on failure + */ +int lv_raid_convert(struct logical_volume *lv, + const struct segment_type *new_segtype, + int yes, int force, + unsigned new_image_count, + const unsigned new_stripes, + const unsigned new_stripe_size, + struct dm_list *allocate_pvs) + { + int from_idx, to_idx; + uint32_t stripes, stripe_size; + struct lv_segment *seg = first_seg(lv); + struct segment_type *striped_segtype; + struct dm_list removal_lvs; + + dm_list_init(&removal_lvs); + + if (!new_segtype) { + log_error(INTERNAL_ERROR "New segtype not specified"); + return 0; + } + + if (!(striped_segtype = get_segtype_from_string(lv->vg->cmd, SEG_TYPE_NAME_STRIPED))) + return_0; + + /* Given segtype of @lv */ + if (!seg_is_striped(seg) && /* Catches linear = "overloaded striped with one area" as well */ + !seg_is_mirror(seg) && + !seg_is_raid(seg)) + goto err; + + /* Requested segtype */ + if (!segtype_is_linear(new_segtype) && + !segtype_is_striped(new_segtype) && + !segtype_is_mirror(new_segtype) && + !segtype_is_raid(new_segtype)) + goto err; + + /* Define new image count if not passed in */ + new_image_count = new_image_count ?: seg->area_count; + + if (!_check_max_raid_devices(new_image_count)) + return 0; + + /* Define new stripe size if not passed in */ + stripe_size = new_stripe_size ?: seg->stripe_size; + stripes = new_stripes ?: _data_rimages_count(seg, seg->area_count); + + /* @lv has to be active to perform raid conversion operatons */ + if (!lv_is_active(lv)) { + log_error("%s must be active to perform this operation.", + display_lvname(lv)); return 0; } - if (vg_is_clustered(lv->vg) && !lv_is_active_exclusive_locally(lv)) { - log_error("%s/%s must be active exclusive locally to" - " perform this operation.", lv->vg->name, lv->name); + /* If clustered VG, @lv has to be active locally */ + if (vg_is_clustered(lv->vg) && !lv_is_active_exclusive_locally(lv)) { + log_error("%s must be active exclusive locally to" + " perform this operation.", display_lvname(lv)); + return 0; + } + + /* Can't perfom any raid conversions on out of sync LVs */ + if (!_raid_in_sync(lv)) { + log_error("Unable to convert %s while it is not in-sync", + display_lvname(lv)); return 0; } - if (!strcmp(seg->segtype->name, "mirror") && - (!strcmp(new_segtype->name, SEG_TYPE_NAME_RAID1))) - return _convert_mirror_to_raid1(lv, new_segtype); + /* + * Table driven takeover, i.e. conversions from one segment type to another + */ + from_idx = _takeover_fn_idx(seg->segtype); + to_idx = _takeover_fn_idx(new_segtype); + if ((from_idx < 0 || to_idx < 0) || + !_takeover_fn[from_idx][to_idx](lv, yes, force, new_segtype, new_image_count, + stripes, stripe_size, allocate_pvs)) + goto err; + + log_print_unless_silent("Logical volume %s successfully converted", display_lvname(lv)); + return 1; - log_error("Converting the segment type for %s/%s from %s to %s" - " is not yet supported.", lv->vg->name, lv->name, +err: + /* FIXME: enhance message */ + log_error("Converting the segment type for %s from %s to %s" + " is not supported.", display_lvname(lv), lvseg_name(seg), new_segtype->name); return 0; } - static int _remove_partial_multi_segment_image(struct logical_volume *lv, struct dm_list *remove_pvs) { diff --git a/lib/metadata/segtype.h b/lib/metadata/segtype.h index 4b2df78..ff2b3fc 100644 --- a/lib/metadata/segtype.h +++ b/lib/metadata/segtype.h @@ -1,6 +1,6 @@ /* * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. - * Copyright (C) 2004-2010 Red Hat, Inc. All rights reserved. + * Copyright (C) 2004-2015 Red Hat, Inc. All rights reserved. * * This file is part of LVM2. * @@ -28,28 +28,51 @@ struct dm_config_node; struct dev_manager; /* Feature flags */ -#define SEG_CAN_SPLIT 0x00000001U -#define SEG_AREAS_STRIPED 0x00000002U -#define SEG_AREAS_MIRRORED 0x00000004U -#define SEG_SNAPSHOT 0x00000008U -#define SEG_FORMAT1_SUPPORT 0x00000010U -#define SEG_VIRTUAL 0x00000020U -#define SEG_CANNOT_BE_ZEROED 0x00000040U -#define SEG_MONITORED 0x00000080U -#define SEG_REPLICATOR 0x00000100U -#define SEG_REPLICATOR_DEV 0x00000200U -#define SEG_RAID 0x00000400U -#define SEG_THIN_POOL 0x00000800U -#define SEG_THIN_VOLUME 0x00001000U -#define SEG_CACHE 0x00002000U -#define SEG_CACHE_POOL 0x00004000U -#define SEG_MIRROR 0x00008000U -#define SEG_ONLY_EXCLUSIVE 0x00010000U /* In cluster only exlusive activation */ -#define SEG_CAN_ERROR_WHEN_FULL 0x00020000U -#define SEG_UNKNOWN 0x80000000U +#define SEG_CAN_SPLIT 0x0000000000000001U +#define SEG_AREAS_STRIPED 0x0000000000000002U +#define SEG_AREAS_MIRRORED 0x0000000000000004U +#define SEG_SNAPSHOT 0x0000000000000008U +#define SEG_FORMAT1_SUPPORT 0x0000000000000010U +#define SEG_VIRTUAL 0x0000000000000020U +#define SEG_CANNOT_BE_ZEROED 0x0000000000000040U +#define SEG_MONITORED 0x0000000000000080U +#define SEG_REPLICATOR 0x0000000000000100U +#define SEG_REPLICATOR_DEV 0x0000000000000200U +#define SEG_RAID 0x0000000000000400U +#define SEG_THIN_POOL 0x0000000000000800U +#define SEG_THIN_VOLUME 0x0000000000001000U +#define SEG_CACHE 0x0000000000002000U +#define SEG_CACHE_POOL 0x0000000000004000U +#define SEG_MIRROR 0x0000000000008000U +#define SEG_ONLY_EXCLUSIVE 0x0000000000010000U /* In cluster only exlusive activation */ +#define SEG_CAN_ERROR_WHEN_FULL 0x0000000000020000U + +#define SEG_RAID0 0x0000000000040000U +#define SEG_RAID0_META 0x0000000000080000U +#define SEG_RAID1 0x0000000000100000U +#define SEG_RAID10 0x0000000000200000U +#define SEG_RAID4 0x0000000000400000U +#define SEG_RAID5_N 0x0000000000800000U +#define SEG_RAID5_LA 0x0000000001000000U +#define SEG_RAID5_LS 0x0000000002000000U +#define SEG_RAID5_RA 0x0000000004000000U +#define SEG_RAID5_RS 0x0000000008000000U +#define SEG_RAID5 SEG_RAID5_LS +#define SEG_RAID6_NC 0x0000000010000000U +#define SEG_RAID6_NR 0x0000000020000000U +#define SEG_RAID6_ZR 0x0000000040000000U +#define SEG_RAID6_LA_6 0x0000000080000000U +#define SEG_RAID6_LS_6 0x0000000100000000U +#define SEG_RAID6_RA_6 0x0000000200000000U +#define SEG_RAID6_RS_6 0x0000000400000000U +#define SEG_RAID6_N_6 0x0000000800000000U +#define SEG_RAID6 SEG_RAID6_ZR + +#define SEG_UNKNOWN 0x8000000000000000U #define segtype_is_cache(segtype) ((segtype)->flags & SEG_CACHE ? 1 : 0) #define segtype_is_cache_pool(segtype) ((segtype)->flags & SEG_CACHE_POOL ? 1 : 0) +#define segtype_is_linear(segtype) (!strcmp(segtype->name, "linear")) #define segtype_is_mirrored(segtype) ((segtype)->flags & SEG_AREAS_MIRRORED ? 1 : 0) #define segtype_is_mirror(segtype) ((segtype)->flags & SEG_MIRROR ? 1 : 0) #define segtype_is_pool(segtype) ((segtype)->flags & (SEG_CACHE_POOL | SEG_THIN_POOL) ? 1 : 0) @@ -86,7 +109,7 @@ struct dev_manager; struct segment_type { struct dm_list list; /* Internal */ - uint32_t flags; + uint64_t flags; uint32_t parity_devs; /* Parity drives required by segtype */ struct segtype_handler *ops; @@ -139,6 +162,8 @@ struct segtype_handler { struct segment_type *get_segtype_from_string(struct cmd_context *cmd, const char *str); +struct segment_type *get_segtype_from_flag(struct cmd_context *cmd, + uint64_t flag); struct segtype_library; int lvm_register_segtype(struct segtype_library *seglib, @@ -152,23 +177,65 @@ struct segment_type *init_unknown_segtype(struct cmd_context *cmd, const char *name); #define RAID_FEATURE_RAID10 (1U << 0) /* version 1.3 */ +#define RAID_FEATURE_RAID0 (1U << 1) /* version 1.7 */ +#define RAID_FEATURE_RESHAPING (1U << 2) /* version 1.8 */ #ifdef RAID_INTERNAL int init_raid_segtypes(struct cmd_context *cmd, struct segtype_library *seglib); #endif -#define SEG_TYPE_NAME_RAID1 "raid1" -#define SEG_TYPE_NAME_RAID10 "raid10" -#define SEG_TYPE_NAME_RAID4 "raid4" -#define SEG_TYPE_NAME_RAID5 "raid5" -#define SEG_TYPE_NAME_RAID5_LA "raid5_la" -#define SEG_TYPE_NAME_RAID5_LS "raid5_ls" -#define SEG_TYPE_NAME_RAID5_RA "raid5_ra" -#define SEG_TYPE_NAME_RAID5_RS "raid5_rs" -#define SEG_TYPE_NAME_RAID6 "raid6" -#define SEG_TYPE_NAME_RAID6_NC "raid6_nc" -#define SEG_TYPE_NAME_RAID6_NR "raid6_nr" -#define SEG_TYPE_NAME_RAID6_ZR "raid6_zr" +#define SEG_TYPE_NAME_MIRROR "mirror" + +/* RAID specific seg and segtype checks */ +#define SEG_TYPE_NAME_LINEAR "linear" +#define SEG_TYPE_NAME_STRIPED "striped" + +#define SEG_TYPE_NAME_RAID0 "raid0" +#define SEG_TYPE_NAME_RAID0_META "raid0_meta" +#define SEG_TYPE_NAME_RAID1 "raid1" +#define SEG_TYPE_NAME_RAID10 "raid10" +#define SEG_TYPE_NAME_RAID4 "raid4" +#define SEG_TYPE_NAME_RAID5 "raid5" +#define SEG_TYPE_NAME_RAID5_LA "raid5_la" +#define SEG_TYPE_NAME_RAID5_LS "raid5_ls" +#define SEG_TYPE_NAME_RAID5_RA "raid5_ra" +#define SEG_TYPE_NAME_RAID5_RS "raid5_rs" +#define SEG_TYPE_NAME_RAID6 "raid6" +#define SEG_TYPE_NAME_RAID6_NC "raid6_nc" +#define SEG_TYPE_NAME_RAID6_NR "raid6_nr" +#define SEG_TYPE_NAME_RAID6_ZR "raid6_zr" + +#define segtype_is_raid0(segtype) (((segtype)->flags & SEG_RAID0) ? 1 : 0) +#define segtype_is_raid0_meta(segtype) (((segtype)->flags & SEG_RAID0_META) ? 1 : 0) +#define segtype_is_any_raid0(segtype) (((segtype)->flags & (SEG_RAID0|SEG_RAID0_META)) ? 1 : 0) +#define segtype_is_raid1(segtype) (((segtype)->flags & SEG_RAID1) ? 1 : 0) +#define segtype_is_raid10(segtype) (((segtype)->flags & SEG_RAID10) ? 1 : 0) +#define segtype_is_raid4(segtype) (((segtype)->flags & SEG_RAID4) ? 1 : 0) +#define segtype_is_raid5_ls(segtype) (((segtype)->flags & SEG_RAID5_LS) ? 1 : 0) +#define segtype_is_raid5_rs(segtype) (((segtype)->flags & SEG_RAID5_RS) ? 1 : 0) +#define segtype_is_raid5_la(segtype) (((segtype)->flags & SEG_RAID5_LA) ? 1 : 0) +#define segtype_is_raid5_ra(segtype) (((segtype)->flags & SEG_RAID5_RA) ? 1 : 0) +#define segtype_is_any_raid5(segtype) (((segtype)->flags & \ + (SEG_RAID5_LS|SEG_RAID5_LA|SEG_RAID5_RS|SEG_RAID5_RA|SEG_RAID5_N)) ? 1 : 0) +#define segtype_is_raid6_zr(segtype) (((segtype)->flags & SEG_RAID6_ZR) ? 1 : 0) +#define segtype_is_raid6_nc(segtype) (((segtype)->flags & SEG_RAID6_NC) ? 1 : 0) +#define segtype_is_raid6_nr(segtype) (((segtype)->flags & SEG_RAID6_NR) ? 1 : 0) +#define segtype_is_striped_raid(segtype) (segtype_is_raid(segtype) && !segtype_is_raid1(segtype)) + +#define seg_is_raid0(seg) segtype_is_raid0((seg)->segtype) +#define seg_is_raid0_meta(seg) segtype_is_raid0_meta((seg)->segtype) +#define seg_is_any_raid0(seg) segtype_is_any_raid0((seg)->segtype) +#define seg_is_raid1(seg) segtype_is_raid1((seg)->segtype) +#define seg_is_raid10(seg) segtype_is_raid10((seg)->segtype) +#define seg_is_raid4(seg) segtype_is_raid4((seg)->segtype) +#define seg_is_raid5_ls(seg) segtype_is_raid5_ls((seg)->segtype) +#define seg_is_raid5_rs(seg) segtype_is_raid5_rs((seg)->segtype) +#define seg_is_raid5_la(seg) segtype_is_raid5_la((seg)->segtype) +#define seg_is_raid5_ra(seg) segtype_is_raid5_ra((seg)->segtype) +#define seg_is_raid6_zr(seg) segtype_is_raid6_zr((seg)->segtype) +#define seg_is_raid6_nc(seg) segtype_is_raid6_nc((seg)->segtype) +#define seg_is_raid6_nr(seg) segtype_is_raid6_nr((seg)->segtype) +#define seg_is_striped_raid(seg) segtype_is_striped_raid((seg)->segtype) #ifdef REPLICATOR_INTERNAL int init_replicator_segtype(struct cmd_context *cmd, struct segtype_library *seglib); diff --git a/lib/raid/raid.c b/lib/raid/raid.c index 39e3a06..9a8e1b0 100644 --- a/lib/raid/raid.c +++ b/lib/raid/raid.c @@ -34,8 +34,9 @@ static void _raid_display(const struct lv_segment *seg) display_stripe(seg, s, " "); } - for (s = 0; s < seg->area_count; ++s) - log_print(" Raid Metadata LV%2d\t%s", s, seg_metalv(seg, s)->name); + if (seg->meta_areas) + for (s = 0; s < seg->area_count; ++s) + log_print(" Raid Metadata LV%2d\t%s", s, seg_metalv(seg, s)->name); log_print(" "); } @@ -43,8 +44,9 @@ static void _raid_display(const struct lv_segment *seg) static int _raid_text_import_area_count(const struct dm_config_node *sn, uint32_t *area_count) { - if (!dm_config_get_uint32(sn, "device_count", area_count)) { - log_error("Couldn't read 'device_count' for " + if (!dm_config_get_uint32(sn, "device_count", area_count) && + !dm_config_get_uint32(sn, "stripe_count", area_count)) { + log_error("Couldn't read '(devicei|stripe)_count' for " "segment '%s'.", dm_config_parent_name(sn)); return 0; } @@ -56,7 +58,7 @@ static int _raid_text_import_areas(struct lv_segment *seg, const struct dm_config_value *cv) { unsigned int s; - struct logical_volume *lv1; + struct logical_volume *lv; const char *seg_name = dm_config_parent_name(sn); if (!seg->area_count) { @@ -70,29 +72,33 @@ static int _raid_text_import_areas(struct lv_segment *seg, return 0; } - if (!cv->next) { - log_error("Missing data device in areas array for segment %s.", seg_name); - return 0; - } - - /* Metadata device comes first */ - if (!(lv1 = find_lv(seg->lv->vg, cv->v.str))) { - log_error("Couldn't find volume '%s' for segment '%s'.", - cv->v.str ? : "NULL", seg_name); - return 0; - } - if (!set_lv_segment_area_lv(seg, s, lv1, 0, RAID_META)) + /* Metadata device comes first unless RAID0 optionally w/o metadata dev */ + if (strcmp(cv->v.str, "-")) { + if (!cv->next) { + log_error("Missing data device in areas array for segment %s.", seg_name); + return 0; + } + + if (!(lv = find_lv(seg->lv->vg, cv->v.str))) { + log_error("Couldn't find volume '%s' for segment '%s'.", + cv->v.str ? : "NULL", seg_name); + return 0; + } + if (!set_lv_segment_area_lv(seg, s, lv, 0, RAID_META)) return_0; + } - /* Data device comes second */ cv = cv->next; - if (!(lv1 = find_lv(seg->lv->vg, cv->v.str))) { + + /* Data device comes second unless RAID0 */ + if (!(lv = find_lv(seg->lv->vg, cv->v.str))) { log_error("Couldn't find volume '%s' for segment '%s'.", cv->v.str ? : "NULL", seg_name); return 0; } - if (!set_lv_segment_area_lv(seg, s, lv1, 0, RAID_IMAGE)) - return_0; + + if (!set_lv_segment_area_lv(seg, s, lv, 0, RAID_IMAGE)) + return_0; } /* @@ -111,50 +117,29 @@ static int _raid_text_import(struct lv_segment *seg, const struct dm_config_node *sn, struct dm_hash_table *pv_hash) { + int i; const struct dm_config_value *cv; - - if (dm_config_has_node(sn, "region_size")) { - if (!dm_config_get_uint32(sn, "region_size", &seg->region_size)) { - log_error("Couldn't read 'region_size' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "stripe_size")) { - if (!dm_config_get_uint32(sn, "stripe_size", &seg->stripe_size)) { - log_error("Couldn't read 'stripe_size' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "writebehind")) { - if (!dm_config_get_uint32(sn, "writebehind", &seg->writebehind)) { - log_error("Couldn't read 'writebehind' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "min_recovery_rate")) { - if (!dm_config_get_uint32(sn, "min_recovery_rate", - &seg->min_recovery_rate)) { - log_error("Couldn't read 'min_recovery_rate' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; - } - } - if (dm_config_has_node(sn, "max_recovery_rate")) { - if (!dm_config_get_uint32(sn, "max_recovery_rate", - &seg->max_recovery_rate)) { - log_error("Couldn't read 'max_recovery_rate' for " - "segment %s of logical volume %s.", - dm_config_parent_name(sn), seg->lv->name); - return 0; + const struct { + const char *name; + void *var; + } attr_import[] = { + { "region_size", &seg->region_size }, + { "stripe_size", &seg->stripe_size }, + { "writebehind", &seg->writebehind }, + { "min_recovery_rate", &seg->min_recovery_rate }, + { "max_recovery_rate", &seg->max_recovery_rate }, + }, *aip = attr_import; + + for (i = 0; i < DM_ARRAY_SIZE(attr_import); i++, aip++) { + if (dm_config_has_node(sn, aip->name)) { + if (!dm_config_get_uint32(sn, aip->name, aip->var)) { + log_error("Couldn't read '%s' for segment %s of logical volume %s.", + aip->name, dm_config_parent_name(sn), seg->lv->name); + return 0; + } } } + if (!dm_config_get_list(sn, "raids", &cv)) { log_error("Couldn't find RAID array for " "segment %s of logical volume %s.", @@ -163,7 +148,7 @@ static int _raid_text_import(struct lv_segment *seg, } if (!_raid_text_import_areas(seg, sn, cv)) { - log_error("Failed to import RAID images"); + log_error("Failed to import RAID component pairs"); return 0; } @@ -174,17 +159,29 @@ static int _raid_text_import(struct lv_segment *seg, static int _raid_text_export(const struct lv_segment *seg, struct formatter *f) { - outf(f, "device_count = %u", seg->area_count); - if (seg->region_size) - outf(f, "region_size = %" PRIu32, seg->region_size); + int raid0 = seg_is_any_raid0(seg); + + if (raid0) + outfc(f, (seg->area_count == 1) ? "# linear" : NULL, + "stripe_count = %u", seg->area_count); + + else { + outf(f, "device_count = %u", seg->area_count); + if (seg->region_size) + outf(f, "region_size = %" PRIu32, seg->region_size); + } + if (seg->stripe_size) outf(f, "stripe_size = %" PRIu32, seg->stripe_size); - if (seg->writebehind) - outf(f, "writebehind = %" PRIu32, seg->writebehind); - if (seg->min_recovery_rate) - outf(f, "min_recovery_rate = %" PRIu32, seg->min_recovery_rate); - if (seg->max_recovery_rate) - outf(f, "max_recovery_rate = %" PRIu32, seg->max_recovery_rate); + + if (!raid0) { + if (seg_is_raid1(seg) && seg->writebehind) + outf(f, "writebehind = %" PRIu32, seg->writebehind); + if (seg->min_recovery_rate) + outf(f, "min_recovery_rate = %" PRIu32, seg->min_recovery_rate); + if (seg->max_recovery_rate) + outf(f, "max_recovery_rate = %" PRIu32, seg->max_recovery_rate); + } return out_areas(f, seg, "raid"); } @@ -222,28 +219,34 @@ static int _raid_add_target_line(struct dev_manager *dm __attribute__((unused)), return 0; } - if (!seg->region_size) { - log_error("Missing region size for mirror segment."); - return 0; - } + if (!seg_is_any_raid0(seg)) { + if (!seg->region_size) { + log_error("Missing region size for mirror segment."); + return 0; + } - for (s = 0; s < seg->area_count; s++) - if (seg_lv(seg, s)->status & LV_REBUILD) - rebuilds |= 1ULL << s; + for (s = 0; s < seg->area_count; s++) + if (seg_lv(seg, s)->status & LV_REBUILD) + rebuilds |= 1ULL << s; - for (s = 0; s < seg->area_count; s++) - if (seg_lv(seg, s)->status & LV_WRITEMOSTLY) - writemostly |= 1ULL << s; + for (s = 0; s < seg->area_count; s++) + if (seg_lv(seg, s)->status & LV_WRITEMOSTLY) + writemostly |= 1ULL << s; - if (mirror_in_sync()) - flags = DM_NOSYNC; + if (mirror_in_sync()) + flags = DM_NOSYNC; + } params.raid_type = lvseg_name(seg); + if (seg->segtype->parity_devs) { /* RAID 4/5/6 */ params.mirrors = 1; params.stripes = seg->area_count - seg->segtype->parity_devs; - } else if (strcmp(seg->segtype->name, SEG_TYPE_NAME_RAID10)) { + } else if (seg_is_any_raid0(seg)){ + params.mirrors = 1; + params.stripes = seg->area_count; + } else if (seg_is_raid10(seg)) { /* RAID 10 only supports 2 mirrors now */ params.mirrors = 2; params.stripes = seg->area_count / 2; @@ -252,13 +255,18 @@ static int _raid_add_target_line(struct dev_manager *dm __attribute__((unused)), params.mirrors = seg->area_count; params.stripes = 1; params.writebehind = seg->writebehind; + params.writemostly = writemostly; } - params.region_size = seg->region_size; + + /* RAID 0 doesn't have a bitmap, thus no region_size, rebuilds etc. */ + if (!seg_is_any_raid0(seg)) { + params.region_size = seg->region_size; + params.rebuilds = rebuilds; + params.min_recovery_rate = seg->min_recovery_rate; + params.max_recovery_rate = seg->max_recovery_rate; + } + params.stripe_size = seg->stripe_size; - params.rebuilds = rebuilds; - params.writemostly = writemostly; - params.min_recovery_rate = seg->min_recovery_rate; - params.max_recovery_rate = seg->max_recovery_rate; params.flags = flags; if (!dm_tree_node_add_raid_target_with_params(node, len, &params)) @@ -332,6 +340,7 @@ static int _raid_target_present(struct cmd_context *cmd, const char *feature; } _features[] = { { 1, 3, RAID_FEATURE_RAID10, SEG_TYPE_NAME_RAID10 }, + { 1, 7, RAID_FEATURE_RAID0, SEG_TYPE_NAME_RAID0 }, }; static int _raid_checked = 0; @@ -437,18 +446,20 @@ static const struct raid_type { unsigned parity; int extra_flags; } _raid_types[] = { - { SEG_TYPE_NAME_RAID1, 0, SEG_AREAS_MIRRORED }, + { SEG_TYPE_NAME_RAID0, 0, SEG_RAID0 }, + { SEG_TYPE_NAME_RAID0_META, 0, SEG_RAID0_META }, + { SEG_TYPE_NAME_RAID1, 0, SEG_RAID1 | SEG_AREAS_MIRRORED }, { SEG_TYPE_NAME_RAID10, 0, SEG_AREAS_MIRRORED }, - { SEG_TYPE_NAME_RAID4, 1 }, - { SEG_TYPE_NAME_RAID5, 1 }, - { SEG_TYPE_NAME_RAID5_LA, 1 }, - { SEG_TYPE_NAME_RAID5_LS, 1 }, - { SEG_TYPE_NAME_RAID5_RA, 1 }, - { SEG_TYPE_NAME_RAID5_RS, 1 }, - { SEG_TYPE_NAME_RAID6, 2 }, - { SEG_TYPE_NAME_RAID6_NC, 2 }, - { SEG_TYPE_NAME_RAID6_NR, 2 }, - { SEG_TYPE_NAME_RAID6_ZR, 2 } + { SEG_TYPE_NAME_RAID4, 1, SEG_RAID4 }, + { SEG_TYPE_NAME_RAID5, 1, SEG_RAID5_LS }, + { SEG_TYPE_NAME_RAID5_LA, 1, SEG_RAID5_LA }, + { SEG_TYPE_NAME_RAID5_LS, 1, SEG_RAID5_LS }, + { SEG_TYPE_NAME_RAID5_RA, 1, SEG_RAID5_RA }, + { SEG_TYPE_NAME_RAID5_RS, 1, SEG_RAID5_RS }, + { SEG_TYPE_NAME_RAID6, 2, SEG_RAID6_ZR }, + { SEG_TYPE_NAME_RAID6_NC, 2, SEG_RAID6_NC }, + { SEG_TYPE_NAME_RAID6_NR, 2, SEG_RAID6_NR }, + { SEG_TYPE_NAME_RAID6_ZR, 2, SEG_RAID6_ZR } }; static struct segment_type *_init_raid_segtype(struct cmd_context *cmd, diff --git a/lib/uuid/uuid.c b/lib/uuid/uuid.c index c85b822..67162dd 100644 --- a/lib/uuid/uuid.c +++ b/lib/uuid/uuid.c @@ -140,7 +140,7 @@ int id_valid(struct id *id) for (i = 0; i < ID_LEN; i++) if (!_inverse_c[id->uuid[i]]) { - log_error("UUID contains invalid character"); + log_error("UUID contains invalid character '%c'", id->uuid[i]); return 0; } diff --git a/libdm/libdm-deptree.c b/libdm/libdm-deptree.c index 578f645..c34d532 100644 --- a/libdm/libdm-deptree.c +++ b/libdm/libdm-deptree.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2005-2014 Red Hat, Inc. All rights reserved. + * Copyright (C) 2005-2015 Red Hat, Inc. All rights reserved. * * This file is part of the device-mapper userspace tools. * @@ -42,6 +42,8 @@ enum { SEG_ZERO, SEG_THIN_POOL, SEG_THIN, + SEG_RAID0, + SEG_RAID0_META, SEG_RAID1, SEG_RAID10, SEG_RAID4, @@ -74,6 +76,8 @@ static const struct { { SEG_ZERO, "zero"}, { SEG_THIN_POOL, "thin-pool"}, { SEG_THIN, "thin"}, + { SEG_RAID0, "raid0"}, + { SEG_RAID0_META, "raid0_meta"}, { SEG_RAID1, "raid1"}, { SEG_RAID10, "raid10"}, { SEG_RAID4, "raid4"}, @@ -86,7 +90,7 @@ static const struct { { SEG_RAID6_NC, "raid6_nc"}, /* - *WARNING: Since 'raid' target overloads this 1:1 mapping table + * WARNING: Since 'raid' target overloads this 1:1 mapping table * for search do not add new enum elements past them! */ { SEG_RAID5_LS, "raid5"}, /* same as "raid5_ls" (default for MD also) */ @@ -2089,6 +2093,8 @@ static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)), EMIT_PARAMS(*pos, "%s", synctype); } break; + case SEG_RAID0: + case SEG_RAID0_META: case SEG_RAID1: case SEG_RAID10: case SEG_RAID4: @@ -2286,6 +2292,26 @@ static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *s return 1; } +/* Return 2 if @p != 0 */ +static int _2_if_value(unsigned p) +{ + return p ? 2 : 0; +} + +/* Return number of bits passed in @bits assuming 2 * 64 bit size */ +static int _get_params_count(uint64_t *bits) +{ + int r = 0; + int i = 4; + + while (i--) { + r += 2 * hweight32(bits[i] & 0xFFFFFFFF); + r += 2 * hweight32(bits[i] >> 32); + } + + return r; +} + static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, uint32_t minor, struct load_segment *seg, uint64_t *seg_start, char *params, @@ -2294,34 +2320,32 @@ static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major, uint32_t i; int param_count = 1; /* mandatory 'chunk size'/'stripe size' arg */ int pos = 0; + unsigned type; + + if (seg->area_count % 2) + return 0; if ((seg->flags & DM_NOSYNC) || (seg->flags & DM_FORCESYNC)) param_count++; - if (seg->region_size) - param_count += 2; - - if (seg->writebehind) - param_count += 2; + param_count += _2_if_value(seg->region_size) + + _2_if_value(seg->writebehind) + + _2_if_value(seg->min_recovery_rate) + + _2_if_value(seg->max_recovery_rate); - if (seg->min_recovery_rate) - param_count += 2; - - if (seg->max_recovery_rate) - param_count += 2; - - /* rebuilds is 64-bit */ - param_count += 2 * hweight32(seg->rebuilds & 0xFFFFFFFF); - param_count += 2 * hweight32(seg->rebuilds >> 32); - - /* rebuilds is 64-bit */ - param_count += 2 * hweight32(seg->writemostly & 0xFFFFFFFF); - param_count += 2 * hweight32(seg->writemostly >> 32); + /* rebuilds and writemostly are 4 * 64 bits */ + param_count += _get_params_count(&seg->rebuilds); + param_count += _get_params_count(&seg->writemostly); if ((seg->type == SEG_RAID1) && seg->stripe_size) log_error("WARNING: Ignoring RAID1 stripe size"); - EMIT_PARAMS(pos, "%s %d %u", _dm_segtypes[seg->type].target, + /* Kernel only expects "raid0", not "raid0_meta" */ + type = seg->type; + if (type == SEG_RAID0_META) + type = SEG_RAID0; + + EMIT_PARAMS(pos, "%s %d %u", _dm_segtypes[type].target, param_count, seg->stripe_size); if (seg->flags & DM_NOSYNC) @@ -2525,6 +2549,8 @@ static int _emit_segment_line(struct dm_task *dmt, uint32_t major, seg->iv_offset != DM_CRYPT_IV_DEFAULT ? seg->iv_offset : *seg_start); break; + case SEG_RAID0: + case SEG_RAID0_META: case SEG_RAID1: case SEG_RAID10: case SEG_RAID4: @@ -4074,6 +4100,8 @@ int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset) seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment); switch (seg->type) { + case SEG_RAID0: + case SEG_RAID0_META: case SEG_RAID1: case SEG_RAID4: case SEG_RAID5_LA: diff --git a/tools/lvchange.c b/tools/lvchange.c index e790ea0..0b5178d 100644 --- a/tools/lvchange.c +++ b/tools/lvchange.c @@ -720,7 +720,7 @@ static int _lvchange_writemostly(struct logical_volume *lv) struct cmd_context *cmd = lv->vg->cmd; struct lv_segment *raid_seg = first_seg(lv); - if (strcmp(raid_seg->segtype->name, SEG_TYPE_NAME_RAID1)) { + if (!seg_is_raid1(raid_seg)) { log_error("--write%s can only be used with 'raid1' segment type", arg_count(cmd, writemostly_ARG) ? "mostly" : "behind"); return 0; diff --git a/tools/lvconvert.c b/tools/lvconvert.c index fe8b761..a5c79e5 100644 --- a/tools/lvconvert.c +++ b/tools/lvconvert.c @@ -239,6 +239,7 @@ static int _check_conversion_type(struct cmd_context *cmd, const char *type_str) /* FIXME: Check thin-pool and thin more thoroughly! */ if (!strcmp(type_str, "snapshot") || + !strcmp(type_str, "striped") || !strncmp(type_str, "raid", 4) || !strcmp(type_str, "cache-pool") || !strcmp(type_str, "cache") || !strcmp(type_str, "thin-pool") || !strcmp(type_str, "thin")) @@ -378,6 +379,12 @@ static int _read_params(struct cmd_context *cmd, int argc, char **argv, if (!_check_conversion_type(cmd, type_str)) return_0; + if (arg_count(cmd, type_ARG) && + !(lp->segtype = get_segtype_from_string(cmd, arg_str_value(cmd, type_ARG, NULL)))) + return_0; + if (!get_stripe_params(cmd, &lp->stripes, &lp->stripe_size)) + return_0; + if (arg_count(cmd, repair_ARG) && arg_outside_list_is_set(cmd, "cannot be used with --repair", repair_ARG, @@ -1160,7 +1167,8 @@ static int _lvconvert_mirrors_parse_params(struct cmd_context *cmd, *new_mimage_count = lp->mirrors; /* Too many mimages? */ - if (lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) { + if ((!arg_count(cmd, type_ARG) || strcmp(arg_str_value(cmd, type_ARG, NULL), SEG_TYPE_NAME_RAID1)) && + lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) { log_error("Only up to %d images in mirror supported currently.", DEFAULT_MIRROR_MAX_IMAGES); return 0; @@ -1254,7 +1262,7 @@ static int _lvconvert_mirrors_aux(struct cmd_context *cmd, if ((lp->mirrors == 1) && !lv_is_mirrored(lv)) { log_warn("Logical volume %s is already not mirrored.", lv->name); - return 1; + return 2; /* Indicate fact it's already converted to caller */ } region_size = adjusted_mirror_region_size(lv->vg->extent_size, @@ -1577,7 +1585,7 @@ static int _lvconvert_mirrors(struct cmd_context *cmd, struct logical_volume *lv, struct lvconvert_params *lp) { - int repair = arg_count(cmd, repair_ARG); + int r, repair = arg_count(cmd, repair_ARG); uint32_t old_mimage_count; uint32_t old_log_count; uint32_t new_mimage_count; @@ -1629,29 +1637,17 @@ static int _lvconvert_mirrors(struct cmd_context *cmd, if (repair) return _lvconvert_mirrors_repair(cmd, lv, lp); - if (!_lvconvert_mirrors_aux(cmd, lv, lp, NULL, - new_mimage_count, new_log_count)) + if (!(r = _lvconvert_mirrors_aux(cmd, lv, lp, NULL, + new_mimage_count, new_log_count))) return 0; - if (!lp->need_polling) + if (r != 2 && !lp->need_polling) log_print_unless_silent("Logical volume %s converted.", lv->name); backup(lv->vg); return 1; } -static int _is_valid_raid_conversion(const struct segment_type *from_segtype, - const struct segment_type *to_segtype) -{ - if (from_segtype == to_segtype) - return 1; - - if (!segtype_is_raid(from_segtype) && !segtype_is_raid(to_segtype)) - return_0; /* Not converting to or from RAID? */ - - return 1; -} - static void _lvconvert_raid_repair_ask(struct cmd_context *cmd, struct lvconvert_params *lp, int *replace_dev) @@ -1701,13 +1697,6 @@ static int _lvconvert_raid(struct logical_volume *lv, struct lvconvert_params *l if (!_lvconvert_validate_thin(lv, lp)) return_0; - if (!_is_valid_raid_conversion(seg->segtype, lp->segtype)) { - log_error("Unable to convert %s/%s from %s to %s", - lv->vg->name, lv->name, - lvseg_name(seg), lp->segtype->name); - return 0; - } - /* Change number of RAID1 images */ if (arg_count(cmd, mirrors_ARG) || arg_count(cmd, splitmirrors_ARG)) { image_count = lv_raid_image_count(lv); @@ -1739,8 +1728,21 @@ static int _lvconvert_raid(struct logical_volume *lv, struct lvconvert_params *l if (arg_count(cmd, mirrors_ARG)) return lv_raid_change_image_count(lv, image_count, lp->pvh); - if (arg_count(cmd, type_ARG)) - return lv_raid_reshape(lv, lp->segtype); + if ((seg_is_linear(seg) || seg_is_striped(seg) || seg_is_mirrored(seg) || lv_is_raid(lv)) && + (arg_count(cmd, type_ARG) || + image_count || + arg_count(cmd, stripes_long_ARG) || + arg_count(cmd, stripesize_ARG))) { + unsigned stripe_size = arg_count(cmd, stripesize_ARG) ? lp->stripe_size : 0; + + if (segtype_is_any_raid0(lp->segtype) && + !(lp->target_attr & RAID_FEATURE_RAID0)) { + log_error("RAID module does not support RAID0."); + return 0; + } + + return lv_raid_convert(lv, lp->segtype, lp->yes, lp->force, image_count, lp->stripes, stripe_size, lp->pvh); + } if (arg_count(cmd, replace_ARG)) return lv_raid_replace(lv, lp->replace_pvh, lp->pvh); @@ -1754,7 +1756,9 @@ static int _lvconvert_raid(struct logical_volume *lv, struct lvconvert_params *l return 0; } - if (!lv_raid_percent(lv, &sync_percent)) { + if (!seg_is_striped(seg) && + !seg_is_any_raid0(seg) && + !lv_raid_percent(lv, &sync_percent)) { log_error("Unable to determine sync status of %s/%s.", lv->vg->name, lv->name); return 0; diff --git a/tools/lvcreate.c b/tools/lvcreate.c index e41f76c..d7383b0 100644 --- a/tools/lvcreate.c +++ b/tools/lvcreate.c @@ -453,7 +453,7 @@ static int _read_mirror_params(struct cmd_context *cmd, static int _read_raid_params(struct cmd_context *cmd, struct lvcreate_params *lp) { - if ((lp->stripes < 2) && !strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + if ((lp->stripes < 2) && segtype_is_raid10(lp->segtype)) { if (arg_count(cmd, stripes_ARG)) { /* User supplied the bad argument */ log_error("Segment type 'raid10' requires 2 or more stripes."); @@ -467,8 +467,9 @@ static int _read_raid_params(struct cmd_context *cmd, /* * RAID1 does not take a stripe arg */ - if ((lp->stripes > 1) && seg_is_mirrored(lp) && - strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + if ((lp->stripes > 1) && + (seg_is_mirrored(lp) || segtype_is_raid1(lp->segtype)) && + !segtype_is_raid10(lp->segtype)) { log_error("Stripe argument cannot be used with segment type, %s", lp->segtype->name); return 0; @@ -504,15 +505,26 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd, /* Common mirror and raid params */ if (arg_count(cmd, mirrors_ARG)) { + unsigned max_images; + const char *type; + lp->mirrors = arg_uint_value(cmd, mirrors_ARG, 0) + 1; + if (segtype_is_raid1(lp->segtype)) { + type = SEG_TYPE_NAME_RAID1; + max_images = DEFAULT_RAID_MAX_IMAGES; + } else { + type = "mirror"; + max_images = DEFAULT_MIRROR_MAX_IMAGES; + } - if (lp->mirrors > DEFAULT_MIRROR_MAX_IMAGES) { - log_error("Only up to " DM_TO_STRING(DEFAULT_MIRROR_MAX_IMAGES) - " images in mirror supported currently."); + if (lp->mirrors > max_images) { + log_error("Only up to %u images in %s supported currently.", + max_images, type); return 0; } - if ((lp->mirrors > 2) && !strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + if (lp->mirrors > 2 && + segtype_is_raid10(lp->segtype)) { /* * FIXME: When RAID10 is no longer limited to * 2-way mirror, 'lv_mirror_count()' @@ -534,6 +546,14 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd, /* Default to 2 mirrored areas if '--type mirror|raid1|raid10' */ lp->mirrors = seg_is_mirrored(lp) ? 2 : 1; + if (lp->stripes < 2 && + (segtype_is_any_raid0(lp->segtype) || segtype_is_raid10(lp->segtype))) + if (arg_count(cmd, stripes_ARG)) { + /* User supplied the bad argument */ + log_error("Segment type 'raid(1)0' requires 2 or more stripes."); + return 0; + } + lp->nosync = arg_is_set(cmd, nosync_ARG); if (!(lp->region_size = arg_uint_value(cmd, regionsize_ARG, 0)) && @@ -548,6 +568,26 @@ static int _read_mirror_and_raid_params(struct cmd_context *cmd, return 0; } + /* + * RAID1 does not take a stripe arg + */ + if ((lp->stripes > 1) && + (seg_is_mirrored(lp) || segtype_is_raid1(lp->segtype)) && + !segtype_is_any_raid0(lp->segtype) && + !segtype_is_raid10(lp->segtype)) { + log_error("Stripe argument cannot be used with segment type, %s", + lp->segtype->name); + return 0; + } + + if (arg_count(cmd, mirrors_ARG) && segtype_is_raid(lp->segtype) && + !segtype_is_raid1(lp->segtype) && + !segtype_is_raid10(lp->segtype)) { + log_error("Mirror argument cannot be used with segment type, %s", + lp->segtype->name); + return 0; + } + if (lp->region_size % (pagesize >> SECTOR_SHIFT)) { log_error("Region size (%" PRIu32 ") must be a multiple of " "machine memory page size (%d)", @@ -974,7 +1014,13 @@ static int _lvcreate_params(struct cmd_context *cmd, return 0; } - if (!strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10) && + if (segtype_is_any_raid0(lp->segtype) && + !(lp->target_attr & RAID_FEATURE_RAID0)) { + log_error("RAID module does not support RAID0."); + return 0; + } + + if (segtype_is_raid10(lp->segtype) && !(lp->target_attr & RAID_FEATURE_RAID10)) { log_error("RAID module does not support RAID10."); return 0; @@ -1204,29 +1250,26 @@ static int _check_raid_parameters(struct volume_group *vg, unsigned devs = lcp->pv_count ? : dm_list_size(&vg->pvs); struct cmd_context *cmd = vg->cmd; - /* - * If number of devices was not supplied, we can infer from - * the PVs given. - */ if (!seg_is_mirrored(lp)) { if (!arg_count(cmd, stripes_ARG) && (devs > 2 * lp->segtype->parity_devs)) - lp->stripes = devs - lp->segtype->parity_devs; + lp->stripes = 2; /* Or stripe bomb with many devs given */ if (!lp->stripe_size) lp->stripe_size = find_config_tree_int(cmd, metadata_stripesize_CFG, NULL) * 2; - if (lp->stripes <= lp->segtype->parity_devs) { + if (lp->stripes < 2) { // <= lp->segtype->parity_devs) { log_error("Number of stripes must be at least %d for %s", lp->segtype->parity_devs + 1, lp->segtype->name); return 0; } - } else if (!strcmp(lp->segtype->name, SEG_TYPE_NAME_RAID10)) { + } else if (segtype_is_any_raid0(lp->segtype) || + segtype_is_raid10(lp->segtype)) { if (!arg_count(cmd, stripes_ARG)) lp->stripes = devs / lp->mirrors; if (lp->stripes < 2) { - log_error("Unable to create RAID10 LV," + log_error("Unable to create RAID(1)0 LV," " insufficient number of devices."); return 0; }

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master - lvmetad, lvmpolld: remove DL_LIBS from Makefile

by David Teigland

Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=fd29c7f3a17117... Commit: fd29c7f3a171174dcd47eb8b23ff42a145cdacc6 Parent: 7c312932215f8d70c4f6beb7db506898f4670cfe Author: David Teigland <teigland(a)redhat.com> AuthorDate: Mon Jun 8 11:48:22 2015 -0500 Committer: David Teigland <teigland(a)redhat.com> CommitterDate: Mon Jun 8 11:48:22 2015 -0500 lvmetad, lvmpolld: remove DL_LIBS from Makefile and rdynamic. They are not needed. --- daemons/lvmetad/Makefile.in | 3 +-- daemons/lvmpolld/Makefile.in | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/daemons/lvmetad/Makefile.in b/daemons/lvmetad/Makefile.in index f9b997e..765128c 100644 --- a/daemons/lvmetad/Makefile.in +++ b/daemons/lvmetad/Makefile.in @@ -39,8 +39,7 @@ CFLAGS += $(EXTRA_EXEC_CFLAGS) lvmetad: $(OBJECTS) $(top_builddir)/libdaemon/client/libdaemonclient.a \ $(top_builddir)/libdaemon/server/libdaemonserver.a - $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) \ - $(DL_LIBS) $(LVMLIBS) $(LIBS) -rdynamic + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) $(LVMLIBS) $(LIBS) # TODO: No idea. No idea how to test either. #ifneq ("$(CFLOW_CMD)", "") diff --git a/daemons/lvmpolld/Makefile.in b/daemons/lvmpolld/Makefile.in index 55f3dad..8ebbb90 100644 --- a/daemons/lvmpolld/Makefile.in +++ b/daemons/lvmpolld/Makefile.in @@ -38,8 +38,7 @@ CFLAGS += $(DAEMON_CFLAGS) lvmpolld: $(OBJECTS) $(top_builddir)/libdaemon/client/libdaemonclient.a \ $(top_builddir)/libdaemon/server/libdaemonserver.a - $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) \ - $(DL_LIBS) $(LVMLIBS) $(LIBS) + $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS) $(LVMLIBS) $(LIBS) install_lvmpolld: lvmpolld $(INSTALL_PROGRAM) -D $< $(sbindir)/$(<F)

8 years, 10 months

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master - lvmetad.c: internal err on modifying global handle with open connection

by okozina

Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=7c312932215f8d... Commit: 7c312932215f8d70c4f6beb7db506898f4670cfe Parent: b89ad7e2d4a5dd5e1947c2b14941f6a87d354451 Author: Ondrej Kozina <okozina(a)redhat.com> AuthorDate: Fri May 22 14:55:42 2015 +0200 Committer: Ondrej Kozina <okozina(a)redhat.com> CommitterDate: Mon Jun 8 16:01:40 2015 +0200 lvmetad.c: internal err on modifying global handle with open connection lvmetad_init() should not be called with open connection to the daemon. Doing so is considered to be an internall error within lvm2 code. Such coincidence can't occur within current code. Let's assure us it won't ever happen. --- lib/cache/lvmetad.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/lib/cache/lvmetad.c b/lib/cache/lvmetad.c index 73a382c..dd1219b 100644 --- a/lib/cache/lvmetad.c +++ b/lib/cache/lvmetad.c @@ -46,6 +46,10 @@ void lvmetad_init(struct cmd_context *cmd) if (!_lvmetad_use && !access(getenv("LVM_LVMETAD_PIDFILE") ? : LVMETAD_PIDFILE, F_OK)) log_warn("WARNING: lvmetad is running but disabled." " Restart lvmetad before enabling it!"); + + if (_lvmetad_connected) + log_debug(INTERNAL_ERROR "Refreshing lvmetad global handle while connection with the daemon is active"); + _lvmetad_cmd = cmd; }

8 years, 10 months

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master - lvmetad.h: rephrase API descriptions

by okozina

Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=b89ad7e2d4a5dd... Commit: b89ad7e2d4a5dd5e1947c2b14941f6a87d354451 Parent: 3225f8d17596b79b76ed9da5291843d02a2aa7b6 Author: Ondrej Kozina <okozina(a)redhat.com> AuthorDate: Fri May 22 14:25:54 2015 +0200 Committer: Ondrej Kozina <okozina(a)redhat.com> CommitterDate: Mon Jun 8 16:01:32 2015 +0200 lvmetad.h: rephrase API descriptions Some of descritpions were misleading at least. Some were completely off the reality. lvmetad_init doesn't re-establish or initialise a connection lvmetad_active and lvmetad_connect_or_warn can do so. --- lib/cache/lvmetad.h | 12 +++++++----- 1 files changed, 7 insertions(+), 5 deletions(-) diff --git a/lib/cache/lvmetad.h b/lib/cache/lvmetad.h index 6769f76..395bc41 100644 --- a/lib/cache/lvmetad.h +++ b/lib/cache/lvmetad.h @@ -29,8 +29,7 @@ typedef int (*activation_handler) (struct cmd_context *cmd, #ifdef LVMETAD_SUPPORT /* - * Initialise the communication with lvmetad. Normally called by - * lvmcache_init. Sets up a global handle for our process. + * Sets up a global handle for our process. */ void lvmetad_init(struct cmd_context *); @@ -59,7 +58,9 @@ int lvmetad_socket_present(void); /* * Check whether lvmetad is active (where active means both that it is running - * and that we have a working connection with it). + * and that we have a working connection with it). It opens new connection + * with lvmetad in the process when lvmetad is supposed to be used and the + * connection is not open yet. */ int lvmetad_active(void); @@ -70,8 +71,9 @@ int lvmetad_active(void); void lvmetad_connect_or_warn(void); /* - * Drop connection to lvmetad. A subsequent lvmetad_init() will re-establish - * the connection (possibly at a different socket path). + * Drop connection to lvmetad. A subsequent lvmetad_connect_or_warn or + * lvmetad_active will re-establish the connection (possibly at a + * different socket path). */ void lvmetad_disconnect(void);

8 years, 10 months

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