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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.
In some cases, the command will update VG metadata
in lvmetad without writing it. In these cases there
is no vg->vg_committed and it should use 'vg' directly.
This happens when the command finds that the lvmetad
VG has been invalidated, rereads the metadata from disk,
then updates lvmetad with that metadata. This happens
often with lvmlockd or foreign VGs, and can happen without
lvmlockd if a previous command fails after invalidating
the VG in lvmetad.
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
This fixes a regression from commit a7c45ddc5, which moved
the lvmetad VG update from vg_commit() to unlock_vg().
The lvmetad VG update needs to send the version of metadata
that was committed rather than sending the state of struct 'vg'.
The 'vg' may have been partially modified since vg_commit(),
and contain non-committed metadata that shouldn't be sent
to lvmetad.
Any failing stripes in raid0/raid0_meta type LVs cause data loss,
thus replacement via 'lvconvert --replace...' does not make sense.
Patch prohibits replacement on raid0/raid0_meta LVs.
- resolves rhbz1356734
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.
Including major and minor numbers in pvs and lvs output when calling
lvmdump -a makes it a bit easier to match these items with possible
system log/journal.
Commit ca878a3426 changed behavior
or resize operation. Later the code has been futher changed
to skip fs resize completely when size of LV is already matching
and finaly at the most recent resize changeset for resize the
check for matching size has been eliminated as well so we ended
with a request call to resize fs to 0 size in some cases.
This commit reoders some test so the prompt happens just once before
resize of possibly 2 related volumes.
Also extra test for having LV already given size is added, and
whole metadata update is skipped for this case as the only
result would be an increment of seqno.
However the filesystem is still resized when requested,
so if the LV has some size and the resize is resolved to
the same size, the filesystem resize is called so in case FS
would not match, the resize will happen.
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
A livelock occurs on extension in lv_manip when adjusting the region size,
which doesn't apply to any raid0/raid0_meta LVs (these don't have a bitmap).
Fix by prohibiting the region size adjustment on any such LVs.
- resolves rhbz1354604
An unconditional access to the non-existing MetaLV of a raid0 LV in
lv_raid_remove_missing() was causing the segfault.
Only call log_debug() on replacements of existing MetaLVs.
- resolves rhbz1354646
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
