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(Automatic) repair may not be allowed during the initial sync of an upconverted
linear LV, because the data on the failing, primary leg hasn't been completely
synchronized to the N-1 other legs of the raid1 LV (replacing failed legs during
repair involves discontinuing access to any replaced legs data, thus preventing
data recovery on the primary leg e.g. via dd_rescue).
Even though repair would not cause data loss when adding legs to a fully synced
raid1 LV, we don't have information yet defining this state yet (e.g. a raid1
LV flag telling the fully synchronized status before any legs were added),
hence can't automatically decide to allow to repair.
If nonetheless a repair on a non-synced raid1 LVs is intended, the "--force"
option has to be provided.
Resolves: rhbz1311765
Validate kernel support for raid0/raid4 on given and
requested segtype before requesting conversions on them.
Because raid10 wasn't present in old RAID targets, add
the same validation to be prepared once we support them.
Check for dm-raid target version with non-standard raid4 mapping expecting the dedicated
parity device in the last rather than the first slot and prohibit to create, activate or
convert to such LVs from striped/raid0* or vice-versa in order to avoid data corruption.
Add related tests to lvconvert-raid-takeover.sh
Resolves: rhbz1388962
On conversions between striped/raid0* and raid4, the kernel expects
the dedicated raid4 parity SubLVs in the first segment area rather than
in the last it's been allocated to, thus the data mapping ain't proper.
Enhance lvconvert (lib/metadata/raid_manip.c) to shift the dedicated
parity SubLVs on conversions from striped/raid0* to raid4 and vice-versa.
In case of raid0_meta -> raid4 where the MD raid0 personality already has
stored RAID array device positions in the superblocks, the MetaLVs have to
be cleared so that the kernel doesn't fail validating the array positions
after lvm has shifted them up by one.
Add more tests to lvconvert-raid-takeover.sh including one to check for
mapping flaws by converting a created raid4 with filesystem -> striped
and fsck it.
Whilst on it:
- add missing direct striped -> raid4 conversion to the takeover array
to avoid an intermim conversion from striped -> raid0*
- clean up the takeover array
- allow lvconvert to actually call lv_raid_convert() on all takeover requests
in order to check parameters and display messages provided by takeover
functions rather than just "...not supported" from within lvconvert
- fix a typo
Resolves: rhbz1386148
If a device disappears after obtaining the list of devices but before
processing it as a member of that list, dmsetup exits with a failure code.
Most commands still produce what output they can in these circumstances,
but 'ls --tree' and 'info -c' with fields depending on device dependencies
didn't. Change this.
Keep for now function logic making its decision on string content.
We need bigger patch converting all things to bit-checks later.
This needs however bigger refactoring.
So this commit reverts some changes from:
c8b6c13015
Commit 088b3d036a allowed repair on cache origin RAID LVs
and restricted lvconvert actions on RAID SubLVs to change number of mirrors, repair,
replace and type changes in order to avoid unsuitable coversions on them.
This introduced a regression prohibiting --splitmirrors on any RAID SubLVs
(e.g. of cache or thin LVs; lvconvert-{cache,thin}-raid.sh tests failing).
Fix allows split mirrors again.
Fix some indenting whilst on it.
When we have already decoded arg_is_set into a local var
or already set segment type - already use these
values instead of repeating calls and string checks.
Seems some error path where not converted to 'new' ECMD return value.
Fix them to always 'goto out'.
Also drop unneeded 'ret = 0' when ret already is 0.
This test never passes on loop back, so we will skip unless the
pv devices are real devices which contain `/dev/sd`.
We always fail because we need lvm to run slow to get a timer to
pop, and loopback are too fast.
If you run multiple runs of unittest.main, unless you don't pass exit=true
the test case always ends with a 0 exit code. Add ability to store the
result of each invocation of the test and exit with a non-zero exit code
if anyone of them fail.
In case a RAID orig LV is being cached and fails, repair is impossible because
"lvconvert --repair" gets rejected.
Fix by allowing repair on cache orig RAID LVs and
"lvconvert --replace/--mirrors/--type {raid*|mirror|striped|linear}" as well.
Allow the same lvconvert actions on any cache pool and metadata RAID SubLVs.
Resolves: rhbz1380532
The following LvCommon properties were added so that the API
would have the same functionality as lvm2app has.
LvCommon.MetaDataSizeBytes
LvCommon.Attr
LvCommon.MetaDataPercent
LvCommon.CopyPercent
LvCommon.SnapPercent
LvCommon.SyncPercent
Fix missing wait so we have paired waiting.
Also 'wait' for precise PID to get 'exit' code.
Test for 'error' replacing only with newer snapshot targets.
The old one will wait for resume.
Note: 'wait -n' is not always available so can't be used..
Integrate back _unblock_sigalrm() and check for error code of
pthread_sigmask() function so we do not use uninitialized
sigmask_t on error path (Coverity).
