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Code Releases Activity

Warn of deadlock risk when using snapshots of mirror segment type.

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This commit is contained in:
Alasdair Kergon 2012-05-14 16:18:57 +00:00
parent 8b59522d67
commit e0ed1b458d
2 changed files with 4 additions and 4 deletions
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2
WHATS_NEW
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@ -9,7 +9,7 @@ Version 2.02.96 -
Add initial support for thin pool lvconvert. Add initial support for thin pool lvconvert.
Fix lvrename for thin volumes (regression in for_each_sub_lv() 2.02.89). Fix lvrename for thin volumes (regression in for_each_sub_lv() 2.02.89).
Fix up-convert when mirror activation is controled by volume_list and tags. Fix up-convert when mirror activation is controled by volume_list and tags.
Disallow snapshots of mirror segment type. Warn of deadlock risk when using snapshots of mirror segment type.
Fix bug in cmirror that caused incorrect status info to print on some nodes. Fix bug in cmirror that caused incorrect status info to print on some nodes.
Remove statement that snapshots cannot be tagged from lvm man page. Remove statement that snapshots cannot be tagged from lvm man page.
Disallow changing cluster attribute of VG while RAID LVs are active. Disallow changing cluster attribute of VG while RAID LVs are active.

6
lib/metadata/lv_manip.c
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@ -4231,9 +4231,9 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg, struct l
if (lv_is_mirror_type(org) && if (lv_is_mirror_type(org) &&
!seg_is_raid(first_seg(org))) { !seg_is_raid(first_seg(org))) {
log_error("Snapshots of \"mirror\" segment types" log_warn("WARNING: Snapshots of mirrors can deadlock under rare device failures.");
" are not supported"); log_warn("WARNING: Consider using the raid1 mirror type to avoid this.");
return NULL; log_warn("WARNING: See global/mirror_segtype_default in lvm.conf.");
} }
if (!lv_info(cmd, org, 0, &info, 0, 0)) { if (!lv_info(cmd, org, 0, &info, 0, 0)) {