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Works if the pool is inactive.
Activation code doesn't notice a new raid dependency in on-disk metadata
when a thin LV is already active.
https://bugzilla.redhat.com/1365286
The dm-raid target now rejects device rebuild requests during ongoing
resynchronization thus causing 'lvconvert --repair ...' to fail with
a kernel error message. This regresses with respect to failing automatic
repair via the dmeventd RAID plugin in case raid_fault_policy="allocate"
is configured in lvm.conf as well.
Previously allowing such repair request required cancelling the
resynchronization of any still accessible DataLVs, hence reasoning
potential data loss.
Patch allows the resynchronization of still accessible DataLVs to
finish up by rejecting any 'lvconvert --repair ...'.
It enhances the dmeventd RAID plugin to be able to automatically repair
by postponing the repair after synchronization ended.
More tests are added to lvconvert-rebuild-raid.sh to cover single
and multiple DataLV failure cases for the different RAID levels.
- resolves: rhbz1371717
Commit 199697accf rerouted funtion
for priting cache volume origin to lvm2app app function - which
however had a bug. So restore the original functionality
and print correct LV as cache origin LV.
Unconditionally guard there is at least 1/4 of metadata volume
free (<16Mib) or 4MiB - whichever value is smaller.
In case there is not enough free space do not let operation proceed and
recommend thin-pool metadata resize (in case user has not
enabled autoresize, manual 'lvextend --poolmetadatasize' is needed).
In the case there is no active thin volume, report thin pool
as lock holder. This fixed function like lvextend
which either expecte lock holder LV is some active thin
or 'possibly' inactive thin pool.
The existing code doesn't understand that mirror logs should cling to
parallel LVs (like extending them) instead of avoiding them.
As a quick workaround to avoid lvcreate failures, hard-code
--alloc normal for mirror logs even if the rest of the allocation
used a stricter policy.
https://bugzilla.redhat.com/show_bug.cgi?id=1376532
Reinstantiate reporting of metadata percent usage for cache volumes.
Also show the same percentage with hidden cache-pool LV.
This regression was caused by optimization for a single-ioctl in
2.02.155.
Introduce 'hard limit' for max number of cache chunks.
When cache target operates with too many chunks (>10e6).
When user is aware of related possible troubles he
may increase the limit in lvm.conf.
Also verbosely inform user about possible solution.
Code works for both lvcreate and lvconvert.
Lvconvert fully supports change of chunk_size when caching LV
(and validates for compatible settings).
'pvmove -n name pv1 pv2' allows to collocate multiple RAID SubLVs
on pv2 (e.g. results in collocated raidlv_rimage_0 and raidlv_rimage_1),
thus causing loss of resilence and/or performance of the RaidLV.
Fix this pvmove flaw leading to potential data loss in case of PV failure
by preventing any SubLVs from collocation on any PVs of the RaidLV.
Still allow to collocate any DataLVs of a RaidLV with their sibling MetaLVs
and vice-versa though (e.g. raidlv_rmeta_0 on pv1 may still be moved to pv2
already holding raidlv_rimage_0).
Because access to the top-level RaidLV name is needed,
promote local _top_level_lv_name() from raid_manip.c
to global top_level_lv_name().
- resolves rhbz1202497
Adding MetaLVs to given DataLVs (e.g. raid0 -> raid0_meta takeover),
_avoid_pvs_with_other_images_of_lv() was missing code to prohibit
allocation when called with a just allocated MetaLV to prohibit
collaocation of the next allocated MetaLV on the same PV.
- resolves rhbz1366738
Enforce mirror/raid0/1/10/4/5/6 type specific maximum images when
creating LVs or converting them from mirror <-> raid1.
Document those maxima in the lvcreate/lvconvert man pages.
- resolves rhbz1366060
'lvchange --resync LV' or 'lvchange --syncaction repair LV' request the
RAID layout specific parity blocks in raid4/5/6 to be recreated or the
mirrored blocks to be copied again from the master leg/copy for raid1/10,
thus not allowing a rebuild of a particular PV.
Introduce repeatable option '--[raid]rebuild PV' to allow to request
rebuilds of specific PVs in a RaidLV which are known to contain corrupt
data (e.g. rebuild a raid1 master leg).
Add test lvchange-rebuild-raid.sh to test/shell doing rebuild
variations on raid1/10 and 5; add aux function check_status_chars
to support the new test.
- Resolves rhbz1064592
introduced with commit 8f62b7bfe5 rely on complete
defintions of the relations between the LVs of a VG.
Hence only run these checks when the complete_vg flag
is set on calls to check_lv_segments().
lvconvert failed in test lvconvert-thin-raid.sh when
calling check_lv_segments() from _read_segments() without
providing a complete definition.
General RAID and RAID segment type specific checks are added
to merge.c. New static _check_raid_seg() is called on each segment
of a RaidLV (which have just one) from check_lv_segments().
New checks caught some unititialized segment members
which are addressed here as well:
- initialize seg->region_size to 0 in lvcreate.c for raid0/raid0_meta
- initialize list seg->origin_list in lv_manip.c
When volume was lvconvert-ed to a thin-volume with external origin,
then in case thin-pool was in non-zeroing mode
it's been printing WARNING about not zeroing thin volume - but
this is wanted and expected - so nothing to warn about.
So in this particular use case WARNING needs to be suppressed.
Adding parameter support for lvcreate_params.
So now lvconvert creates 'normal thin LV' in read-only mode
(so any read will 'return 0' for a moment)
then deactivate regular thin LV and reacreate in 'final R/RW' mode
thin LV with external origin and activate again.
