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'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
Prepare for new segment type conversion functionality in cases that
currently fail. In the short-term, we need to do this while limiting
the changes to the code paths for the conversions that are already
supported.
on any thin snap external origin LV which caused a segfault
when none existed as exposed by the vgsplit-thin.sh test.
Only call lv_is_on_pvs() if an external origin LV actually
exists and correct the related splitting logic.
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
Add matching support for -Z option also we doing full conversion
to cache-pool.
Extending coversion message to show which pool type is created
and whether the metadata will be wiped or remain unmodified.
Follow-up to 27a767d5e8.
Tunning behavior in a way we always prompt when option --zero is NOT specified.
Without -Z lvm expects user wants to 'reset' cache-pool metadata
(they could have been splitted from some cached LV)
If user doesn't want to zero metadata he needs to specify -Zn.
User may also avoid prompting for zeroing by using -Zy for
cache-pool (basically equals using --yes without -Z being given)
(unlike full convert case, there is no cache-pool being converted,
so there is not 'uncoditional' prompt in this case).
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.
When cache pool is reused for a new cached volume, there is
normally no need to 'keep' old cache-pool metadata as this
could cause major data lose.
Unlike with 'lvcreate -H -LX --cachepool' conversion, this lvconvert
path left the metadata unzeroed - partly for making easier some
debugging, but this was rather a bug.
So to keep possible reattach of 'unzeroed' metadata, user
now has to use 'lvconvert -Zn' for such conversion. In this case
the prompt will appear about possibe data loss and to proceed,
user has to confirm such operation. Without -Zn metadata are wiped.
Commit 3928c96a37 introduced
new defaults for raid number of stripes, which may cause
backwards compatibility issues with customer scripts.
Adding configurable option 'raid_stripe_all_devices' defaulting
to '0' (i.e. off = new behaviour) to select the old behaviour
of using all PVs in the VG or those provided on the command line.
In case any scripts rely on the old behaviour, just set
'raid_strip_all_devices = 1'.
- resolves rhbz1354650
The --uuid, --major and --alldevices arguments were incorrectly tested
after confirming argc is > 0, in a branch that only executes if argc
== 0 (i.e. they were unreachable).
Move all device checks before the test for argc and log an appropriate
error before returning.
raid0/raid0_meta type LVs don't have a default number of stripes when
created without '-i/--stripes Stripes' whereas other raid types have one.
Patch sets the default for raid0/raid0_meta to 2 stripes.
The default amount of stripes for raid4/5/10 is changed to 2 and for raid6 to 3
rather than using all PVs in the VG or those provided on the command line.
This is to avoid unintended high number of stripes in case of many PVs.
To select a different amount of stripes from the default,
use 'lvcreate -i/--stripes Stripes'.
- resolves rhbz1354650
Resync attempts on raid0/raid0_meta via 'lvchange --resync ...'
cause segfaults.
'lvchange --syncaction ...' doesn't get rejected either.
Prohibit both on raid0/raid0_meta LVs.
- resolves rhbz1354656
4420d41fea introduced recursive split of lvs which
splits a top-level LV together with it's sub LVs.
This lead to invalid temporary list pointers
causing hangs/OOM situations.
Patch updates the temporary list pointer
referencing a moved sub LV.
- resolves rhbz1354686
Make the --filemap switch take no arguments and instead accept one
or more files on the command line to be mapped and placed into
groups.
This allows --filemap to be used with a glob:
# dmstats create --filemap *
rhel5.10-1.qcow2: Created new group with 87 region(s) as group ID 1564.
rhel5.10.qcow2: Created new group with 8 region(s) as group ID 1651.
rhel7.0-1.qcow2: Created new group with 11 region(s) as group ID 1659.
rhel7.0.qcow2: Created new group with 1454 region(s) as group ID 1670.
vm.img: Created new group with 2 region(s) as group ID 3124.
