Gitweb:
https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=fe78cd4082cb9af1058...
Commit: fe78cd4082cb9af10580180d61898fcef93dc624
Parent: 40266faaab07f5578d137f9e400fbc9190edabcd
Author: Zdenek Kabelac <zkabelac(a)redhat.com>
AuthorDate: Wed Jul 8 10:38:36 2020 +0200
Committer: Zdenek Kabelac <zkabelac(a)redhat.com>
CommitterDate: Wed Jul 8 11:12:54 2020 +0200
wipe_lv: always zero at least 4K
When zero_sectors passed value like 1 - we could zero only 1 sector.
Reinstantiate we always zero at least 4K block.
---
lib/metadata/lv_manip.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c
index d96137aff..5956d032c 100644
--- a/lib/metadata/lv_manip.c
+++ b/lib/metadata/lv_manip.c
@@ -7642,7 +7642,9 @@ int wipe_lv(struct logical_volume *lv, struct wipe_params wp)
if (wp.is_metadata) /* Verbosely notify metadata will not be fully zeroed */
log_verbose("Metadata logical volume %s not fully zeroed and may contain stale
data.",
display_lvname(lv));
- zero_sectors = wp.zero_sectors ? : UINT64_C(4096) >> SECTOR_SHIFT;
+ zero_sectors = UINT64_C(4096) >> SECTOR_SHIFT;
+ if (wp.zero_sectors > zero_sectors)
+ zero_sectors = wp.zero_sectors;
if (zero_sectors > lv->size)
zero_sectors = lv->size;