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cache: improve vgremove loop

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Support internal removal of 'cache origin' volume - which we
do not normally expose to a user - however internal processing
loops may hit this condition (depending on order of list LVs).

So when this operation is internally requested - we automatically
try to remove it's 'holding' LV (cache LV) - which will also
remove the origin.
This commit is contained in:
Zdenek Kabelac 2019-08-26 13:28:00 +02:00
parent af0b84ccc8
commit c98e34e4d0
2 changed files with 8 additions and 0 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.03.06 -
================================
Improve internal removal of cached devices.
Synchronize with udev when dropping snapshot.
Add missing device synchronization point before removing pvmove node.
Correctly set read_ahead for LVs when pvmove is finished.

7
lib/metadata/lv_manip.c
View File

@ -6544,6 +6544,13 @@ int lv_remove_with_dependencies(struct cmd_context *cmd, struct logical_volume *
return 0;
}
if (lv_is_cache_origin(lv)) {
if (!_lv_remove_segs_using_this_lv(cmd, lv, force, level, "cache origin"))
return_0;
/* Removal of cache LV also removes caching origin */
return 1;
}
if (lv_is_external_origin(lv) &&
!_lv_remove_segs_using_this_lv(cmd, lv, force, level, "external origin"))
return_0;