Gitweb: http://git.fedorahosted.org/git/gfs2-utils.git?p=gfs2-utils.git;a=commitdif…
Commit: 18bd4a7ac30b392a71acb12cb1eb9092480c9908
Parent: 07cadb6dbca0618635b25fd9ff9f03118bfe2f90
Author: Bob Peterson <rpeterso(a)redhat.com>
AuthorDate: Tue Aug 9 09:23:05 2011 -0500
Committer: Bob Peterson <rpeterso(a)redhat.com>
CommitterDate: Mon Aug 29 12:53:02 2011 -0500
fsck.gfs2: fsck.gfs2: Move check_num_ptrs from metawalk to pass1
This patch moves function check_num_ptrs from metawalk.c to pass1.c
and also its helper function fix_leaf_pointers. This function checks
that the number of pointers in a leaf block is a factor of 2, and sane.
This should only happen once, when leaf blocks are initially checked.
Previously it was wasting a lot of time doing this check from every pass.
rhbz#675723
---
gfs2/fsck/metawalk.c | 129 +++-------------------------------------------
gfs2/fsck/metawalk.h | 3 +
gfs2/fsck/pass1.c | 140 ++++++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 148 insertions(+), 124 deletions(-)
diff --git a/gfs2/fsck/metawalk.c b/gfs2/fsck/metawalk.c
index 9abec79..622f9d7 100644
--- a/gfs2/fsck/metawalk.c
+++ b/gfs2/fsck/metawalk.c
@@ -463,123 +463,6 @@ static void warn_and_patch(struct gfs2_inode *ip, uint64_t *leaf_no,
*leaf_no = old_leaf;
}
-/*
- * fix_leaf_pointers - fix a directory dinode that has a number of pointers
- * that is not a multiple of 2.
- * dip - the directory inode having the problem
- * lindex - the index of the leaf right after the problem (need to back up)
- * cur_numleafs - current (incorrect) number of instances of the leaf block
- * correct_numleafs - the correct number instances of the leaf block
- */
-static int fix_leaf_pointers(struct gfs2_inode *dip, int *lindex,
- int cur_numleafs, int correct_numleafs)
-{
- int count;
- char *ptrbuf;
- int start_lindex = *lindex - cur_numleafs; /* start of bad ptrs */
- int tot_num_ptrs = (1 << dip->i_di.di_depth) - start_lindex;
- int bufsize = tot_num_ptrs * sizeof(uint64_t);
- int off_by = cur_numleafs - correct_numleafs;
-
- ptrbuf = malloc(bufsize);
- if (!ptrbuf) {
- log_err( _("Error: Cannot allocate memory to fix the leaf "
- "pointers.\n"));
- return -1;
- }
- /* Read all the pointers, starting with the first bad one */
- count = gfs2_readi(dip, ptrbuf, start_lindex * sizeof(uint64_t),
- bufsize);
- if (count != bufsize) {
- log_err( _("Error: bad read while fixing leaf pointers.\n"));
- free(ptrbuf);
- return -1;
- }
-
- bufsize -= off_by * sizeof(uint64_t); /* We need to write fewer */
- /* Write the same pointers, but offset them so they fit within the
- smaller factor of 2. So if we have 12 pointers, write out only
- the last 8 of them. If we have 7, write the last 4, etc.
- We need to write these starting at the current lindex and adjust
- lindex accordingly. */
- count = gfs2_writei(dip, ptrbuf + (off_by * sizeof(uint64_t)),
- start_lindex * sizeof(uint64_t), bufsize);
- if (count != bufsize) {
- log_err( _("Error: bad read while fixing leaf pointers.\n"));
- free(ptrbuf);
- return -1;
- }
- /* Now zero out the hole left at the end */
- memset(ptrbuf, 0, off_by * sizeof(uint64_t));
- gfs2_writei(dip, ptrbuf, (start_lindex * sizeof(uint64_t)) +
- bufsize, off_by * sizeof(uint64_t));
- free(ptrbuf);
- *lindex -= off_by; /* adjust leaf index to account for the change */
- return 0;
-}
-
-/* check_num_ptrs - check a previously processed leaf's pointer count */
-static int check_num_ptrs(struct gfs2_inode *ip, uint64_t old_leaf,
- int *ref_count, int *exp_count, int *lindex,
- struct gfs2_leaf *oldleaf)
-{
- int factor = 0, divisor = *ref_count, multiple = 1, error = 0;
- struct gfs2_buffer_head *lbh;
-
- /* Check to see if the number of pointers we found is a power of 2.
- It needs to be and if it's not we need to fix it.*/
- while (divisor > 1) {
- factor++;
- divisor /= 2;
- multiple = multiple << 1;
- }
- if (*ref_count != multiple) {
- log_err( _("Directory #%llu (0x%llx) has an "
- "invalid number of pointers to "
- "leaf #%llu (0x%llx)\n\tFound: %u, "
- "which is not a factor of 2.\n"),
- (unsigned long long)ip->i_di.di_num.no_addr,
- (unsigned long long)ip->i_di.di_num.no_addr,
- (unsigned long long)old_leaf,
- (unsigned long long)old_leaf, *ref_count);
- if (!query( _("Attempt to fix it? (y/n) "))) {
- log_err( _("Directory inode was not fixed.\n"));
- return 1;
- }
- error = fix_leaf_pointers(ip, lindex, *ref_count, multiple);
- if (error)
- return error;
- *ref_count = multiple;
- log_err( _("Directory inode was fixed.\n"));
- }
- /* Check to see if the counted number of leaf pointers is what we
- expect. */
- if (*ref_count != *exp_count) {
- log_err( _("Directory #%llu (0x%llx) has an "
- "incorrect number of pointers to "
- "leaf #%llu (0x%llx)\n\tFound: "
- "%u, Expected: %u\n"),
- (unsigned long long)ip->i_di.di_num.no_addr,
- (unsigned long long)ip->i_di.di_num.no_addr,
- (unsigned long long)old_leaf,
- (unsigned long long)old_leaf, *ref_count, *exp_count);
- if (!query( _("Attempt to fix it? (y/n) "))) {
- log_err( _("Directory leaf was not fixed.\n"));
- return 1;
- }
- lbh = bread(ip->i_sbd, old_leaf);
- gfs2_leaf_in(oldleaf, lbh);
- log_err( _("Leaf depth was %d, changed to %d\n"),
- oldleaf->lf_depth, ip->i_di.di_depth - factor);
- oldleaf->lf_depth = ip->i_di.di_depth - factor;
- gfs2_leaf_out(oldleaf, lbh);
- brelse(lbh);
- *exp_count = *ref_count;
- log_err( _("Directory leaf was fixed.\n"));
- }
- return 0;
-}
-
/* Checks exhash directory entries */
static int check_leaf_blks(struct gfs2_inode *ip, struct metawalk_fxns *pass)
{
@@ -638,10 +521,14 @@ static int check_leaf_blks(struct gfs2_inode *ip, struct metawalk_fxns *pass)
}
do {
- if (!valid_block(ip->i_sbd, old_leaf) == 0) {
- error = check_num_ptrs(ip, old_leaf,
- &ref_count, &exp_count,
- &lindex, &oldleaf);
+ if (fsck_abort)
+ return 0;
+ if (pass->check_num_ptrs &&
+ valid_block(ip->i_sbd, old_leaf)) {
+ error = pass->check_num_ptrs(ip, old_leaf,
+ &ref_count,
+ &lindex,
+ &oldleaf);
if (error)
return error;
}
diff --git a/gfs2/fsck/metawalk.h b/gfs2/fsck/metawalk.h
index d705726..7a8ae4c 100644
--- a/gfs2/fsck/metawalk.h
+++ b/gfs2/fsck/metawalk.h
@@ -89,6 +89,9 @@ struct metawalk_fxns {
int (*finish_eattr_indir) (struct gfs2_inode *ip, int leaf_pointers,
int leaf_pointer_errors, void *private);
void (*big_file_msg) (struct gfs2_inode *ip, uint64_t blks_checked);
+ int (*check_num_ptrs) (struct gfs2_inode *ip, uint64_t leafno,
+ int *ref_count, int *lindex,
+ struct gfs2_leaf *leaf);
};
#endif /* _METAWALK_H */
diff --git a/gfs2/fsck/pass1.c b/gfs2/fsck/pass1.c
index 2b04227..e39d9d2 100644
--- a/gfs2/fsck/pass1.c
+++ b/gfs2/fsck/pass1.c
@@ -34,7 +34,7 @@ struct block_count {
uint64_t ea_count;
};
-static int leaf(struct gfs2_inode *ip, uint64_t block, void *private);
+static int check_leaf(struct gfs2_inode *ip, uint64_t block, void *private);
static int check_metalist(struct gfs2_inode *ip, uint64_t block,
struct gfs2_buffer_head **bh, int h, void *private);
static int undo_check_metalist(struct gfs2_inode *ip, uint64_t block,
@@ -59,6 +59,8 @@ static int check_extended_leaf_eattr(struct gfs2_inode *ip, uint64_t *data_ptr,
struct gfs2_ea_header *ea_hdr,
struct gfs2_ea_header *ea_hdr_prev,
void *private);
+static int check_num_ptrs(struct gfs2_inode *ip, uint64_t leafno,
+ int *ref_count, int *lindex, struct gfs2_leaf *leaf);
static int finish_eattr_indir(struct gfs2_inode *ip, int leaf_pointers,
int leaf_pointer_errors, void *private);
static int invalidate_metadata(struct gfs2_inode *ip, uint64_t block,
@@ -79,7 +81,7 @@ static int handle_ip(struct gfs2_sbd *sdp, struct gfs2_inode *ip);
struct metawalk_fxns pass1_fxns = {
.private = NULL,
- .check_leaf = leaf,
+ .check_leaf = check_leaf,
.check_metalist = check_metalist,
.check_data = check_data,
.check_eattr_indir = check_eattr_indir,
@@ -89,6 +91,7 @@ struct metawalk_fxns pass1_fxns = {
.check_eattr_extentry = check_extended_leaf_eattr,
.finish_eattr_indir = finish_eattr_indir,
.big_file_msg = big_file_comfort,
+ .check_num_ptrs = check_num_ptrs,
};
struct metawalk_fxns undo_fxns = {
@@ -199,7 +202,138 @@ struct metawalk_fxns sysdir_fxns = {
.check_dentry = resuscitate_dentry,
};
-static int leaf(struct gfs2_inode *ip, uint64_t block, void *private)
+/*
+ * fix_leaf_pointers - fix a directory dinode that has a number of pointers
+ * that is not a multiple of 2.
+ * dip - the directory inode having the problem
+ * lindex - the index of the leaf right after the problem (need to back up)
+ * cur_numleafs - current (incorrect) number of instances of the leaf block
+ * correct_numleafs - the correct number instances of the leaf block
+ */
+static int fix_leaf_pointers(struct gfs2_inode *dip, int *lindex,
+ int cur_numleafs, int correct_numleafs)
+{
+ int count;
+ char *ptrbuf;
+ int start_lindex = *lindex - cur_numleafs; /* start of bad ptrs */
+ int tot_num_ptrs = (1 << dip->i_di.di_depth) - start_lindex;
+ int bufsize = tot_num_ptrs * sizeof(uint64_t);
+ int off_by = cur_numleafs - correct_numleafs;
+
+ ptrbuf = malloc(bufsize);
+ if (!ptrbuf) {
+ log_err( _("Error: Cannot allocate memory to fix the leaf "
+ "pointers.\n"));
+ return -1;
+ }
+ /* Read all the pointers, starting with the first bad one */
+ count = gfs2_readi(dip, ptrbuf, start_lindex * sizeof(uint64_t),
+ bufsize);
+ if (count != bufsize) {
+ log_err( _("Error: bad read while fixing leaf pointers.\n"));
+ free(ptrbuf);
+ return -1;
+ }
+
+ bufsize -= off_by * sizeof(uint64_t); /* We need to write fewer */
+ /* Write the same pointers, but offset them so they fit within the
+ smaller factor of 2. So if we have 12 pointers, write out only
+ the last 8 of them. If we have 7, write the last 4, etc.
+ We need to write these starting at the current lindex and adjust
+ lindex accordingly. */
+ count = gfs2_writei(dip, ptrbuf + (off_by * sizeof(uint64_t)),
+ start_lindex * sizeof(uint64_t), bufsize);
+ if (count != bufsize) {
+ log_err( _("Error: bad read while fixing leaf pointers.\n"));
+ free(ptrbuf);
+ return -1;
+ }
+ /* Now zero out the hole left at the end */
+ memset(ptrbuf, 0, off_by * sizeof(uint64_t));
+ gfs2_writei(dip, ptrbuf, (start_lindex * sizeof(uint64_t)) +
+ bufsize, off_by * sizeof(uint64_t));
+ free(ptrbuf);
+ *lindex -= off_by; /* adjust leaf index to account for the change */
+ return 0;
+}
+
+/**
+ * check_num_ptrs - check a previously processed leaf's pointer count in the
+ * hash table.
+ *
+ * The number of pointers in a directory hash table that point to any given
+ * leaf block should always be a factor of two. The difference between the
+ * leaf block's depth and the dinode's di_depth gives us the factor.
+ * This function makes sure the leaf follows the rules properly.
+ *
+ * ip - pointer to the in-core inode structure
+ * leafno - the leaf number we're operating on
+ * ref_count - the number of pointers to this leaf we actually counted.
+ * exp_count - the number of pointers to this leaf we expect based on
+ * ip depth minus leaf depth.
+ * lindex - leaf index number
+ * leaf - the leaf structure for the leaf block to check
+ */
+static int check_num_ptrs(struct gfs2_inode *ip, uint64_t leafno,
+ int *ref_count, int *lindex, struct gfs2_leaf *leaf)
+{
+ int factor = 0, divisor = *ref_count, multiple = 1, error = 0;
+ struct gfs2_buffer_head *lbh;
+ int exp_count;
+
+ /* Check to see if the number of pointers we found is a power of 2.
+ It needs to be and if it's not we need to fix it.*/
+ while (divisor > 1) {
+ factor++;
+ divisor /= 2;
+ multiple = multiple << 1;
+ }
+ if (*ref_count != multiple) {
+ log_err( _("Directory #%llu (0x%llx) has an invalid number of "
+ "pointers to leaf #%llu (0x%llx)\n\tFound: %u, "
+ "which is not a factor of 2.\n"),
+ (unsigned long long)ip->i_di.di_num.no_addr,
+ (unsigned long long)ip->i_di.di_num.no_addr,
+ (unsigned long long)leafno,
+ (unsigned long long)leafno, *ref_count);
+ if (!query( _("Attempt to fix it? (y/n) "))) {
+ log_err( _("Directory inode was not fixed.\n"));
+ return 1;
+ }
+ error = fix_leaf_pointers(ip, lindex, *ref_count, multiple);
+ if (error)
+ return error;
+ *ref_count = multiple;
+ log_err( _("Directory inode was fixed.\n"));
+ }
+ /* Check to see if the counted number of leaf pointers is what we
+ expect based on the leaf depth. */
+ exp_count = (1 << (ip->i_di.di_depth - leaf->lf_depth));
+ if (*ref_count != exp_count) {
+ log_err( _("Directory #%llu (0x%llx) has an incorrect number "
+ "of pointers to leaf #%llu (0x%llx)\n\tFound: "
+ "%u, Expected: %u\n"),
+ (unsigned long long)ip->i_di.di_num.no_addr,
+ (unsigned long long)ip->i_di.di_num.no_addr,
+ (unsigned long long)leafno,
+ (unsigned long long)leafno, *ref_count, exp_count);
+ if (!query( _("Attempt to fix it? (y/n) "))) {
+ log_err( _("Directory leaf was not fixed.\n"));
+ return 1;
+ }
+ lbh = bread(ip->i_sbd, leafno);
+ gfs2_leaf_in(leaf, lbh);
+ log_err( _("Leaf depth was %d, changed to %d\n"),
+ leaf->lf_depth, ip->i_di.di_depth - factor);
+ leaf->lf_depth = ip->i_di.di_depth - factor;
+ gfs2_leaf_out(leaf, lbh);
+ brelse(lbh);
+ log_err( _("Directory leaf was fixed.\n"));
+ }
+ return 0;
+}
+
+static int check_leaf(struct gfs2_inode *ip, uint64_t block, void *private)
{
struct block_count *bc = (struct block_count *) private;
Gitweb: http://git.fedorahosted.org/git/gfs2-utils.git?p=gfs2-utils.git;a=commitdif…
Commit: f4ddd034d629e628a2cde4aba86d0c7c20e9800a
Parent: 2a55d5be6be747d8f0e73b9fa3dc13f6328977db
Author: Bob Peterson <rpeterso(a)redhat.com>
AuthorDate: Mon Aug 8 16:20:14 2011 -0500
Committer: Bob Peterson <rpeterso(a)redhat.com>
CommitterDate: Mon Aug 29 12:53:02 2011 -0500
fsck.gfs2: fsck.gfs2: Don't stop invalidating blocks on invalid
When fsck found a duplicate reference to a block it invalidated the dinode's
metadata. But if it encountered an invalid block, for example, out of range,
the invalidating would stop. If we encounter a block that isn't valid, we
obviously can't invalidate it. However, if we return an error, all future
invalidating will stop for that dinode. That's wrong because we need it to
continue to invalidate the other valid blocks. If we don't do this, block
references that follow the bad one that are also referenced elsewhere
(duplicates) won't be flagged as such. As a result, they'll be freed when
this corrupt dinode is deleted, despite being used by another dinode as a
valid block. This patch makes it return a good return code so the invalidating
continues.
rhbz#675723
---
gfs2/fsck/pass1.c | 11 +++++++++--
1 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/gfs2/fsck/pass1.c b/gfs2/fsck/pass1.c
index b9aa165..2b04227 100644
--- a/gfs2/fsck/pass1.c
+++ b/gfs2/fsck/pass1.c
@@ -827,8 +827,15 @@ static int mark_block_invalid(struct gfs2_inode *ip, uint64_t block,
{
uint8_t q;
- if (!valid_block(ip->i_sbd, block) != 0)
- return -EFAULT;
+ /* If the block isn't valid, we obviously can't invalidate it.
+ * However, if we return an error, invalidating will stop, and
+ * we want it to continue to invalidate the valid blocks. If we
+ * don't do this, block references that follow that are also
+ * referenced elsewhere (duplicates) won't be flagged as such,
+ * and as a result, they'll be freed when this dinode is deleted,
+ * despite being used by another dinode as a valid block. */
+ if (!valid_block(ip->i_sbd, block))
+ return 0;
q = block_type(block);
if (q != gfs2_block_free) {
Gitweb: http://git.fedorahosted.org/git/gfs2-utils.git?p=gfs2-utils.git;a=commitdif…
Commit: 72da15f9d14524957bd731722cd59201d502b24a
Parent: 1e178e7efd900508bd82e72f584b5acf83691b66
Author: Bob Peterson <rpeterso(a)redhat.com>
AuthorDate: Mon Aug 8 15:16:01 2011 -0500
Committer: Bob Peterson <rpeterso(a)redhat.com>
CommitterDate: Mon Aug 29 12:53:02 2011 -0500
fsck.gfs2: fsck.gfs2: Ask to reclaim unlinked meta per-rgrp only
Before this patch, fsck.gfs2 would ask for every unlinked metadata bit
whether you wanted to reclaim it as free space. This patch makes it
ask only once per resource group, and reports which resource group
so that the user doesn't think it's stuck in an infinite loop.
rhbz#675723
---
gfs2/fsck/initialize.c | 16 ++++++++++++----
1 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/gfs2/fsck/initialize.c b/gfs2/fsck/initialize.c
index 18d13cc..c0e83a7 100644
--- a/gfs2/fsck/initialize.c
+++ b/gfs2/fsck/initialize.c
@@ -195,7 +195,7 @@ static void check_rgrp_integrity(struct gfs2_sbd *sdp, struct rgrp_list *rgd,
int *this_rg_bad)
{
uint32_t rg_free, rg_reclaimed;
- int rgb, x, y, off, bytes_to_check, total_bytes_to_check;
+ int rgb, x, y, off, bytes_to_check, total_bytes_to_check, asked = 0;
unsigned int state;
rg_free = rg_reclaimed = 0;
@@ -234,9 +234,17 @@ static void check_rgrp_integrity(struct gfs2_sbd *sdp, struct rgrp_list *rgd,
}
/* GFS2_BLKST_UNLINKED */
*this_rg_bad = 1;
- if (!(*fixit)) {
- if (query(_("Okay to reclaim unlinked "
- "inodes? (y/n)")))
+ if (!asked) {
+ char msg[256];
+
+ asked = 1;
+ sprintf(msg,
+ _("Okay to reclaim unlinked "
+ "inodes in resource group "
+ "%lld (0x%llx)? (y/n)"),
+ (unsigned long long)rgd->ri.ri_addr,
+ (unsigned long long)rgd->ri.ri_addr);
+ if (query("%s", msg))
*fixit = 1;
}
if (!(*fixit))
Gitweb: http://git.fedorahosted.org/git/gfs2-utils.git?p=gfs2-utils.git;a=commitdif…
Commit: 1e178e7efd900508bd82e72f584b5acf83691b66
Parent: 3997b83236a388c22d37be67c0b015bbf3d3a5c5
Author: Bob Peterson <rpeterso(a)redhat.com>
AuthorDate: Mon Aug 8 14:47:49 2011 -0500
Committer: Bob Peterson <rpeterso(a)redhat.com>
CommitterDate: Mon Aug 29 12:53:02 2011 -0500
dirent_repair needs to mark the buffer as modified
This patch adds a call to bmodified to function dirent_repair. Without
setting the modified bit, directory repairs may be forgotten and never
written back to disk, leaving the damage in place.
rhbz#675723
---
gfs2/fsck/metawalk.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/gfs2/fsck/metawalk.c b/gfs2/fsck/metawalk.c
index a4d7d3e..6bdea5a 100644
--- a/gfs2/fsck/metawalk.c
+++ b/gfs2/fsck/metawalk.c
@@ -266,6 +266,7 @@ static int dirent_repair(struct gfs2_inode *ip, struct gfs2_buffer_head *bh,
de->de_rec_len = GFS2_DIRENT_SIZE(de->de_name_len);
}
gfs2_dirent_out(de, (char *)dent);
+ bmodified(bh);
return 0;
}