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If there's parent processing handle, we don't need to create completely
new report group and status report - we'll just reuse the one already
initialized for the parent.
Currently, the situation where this matter is when doing internal report
to do the selection for processing commands where we have parent processing
handle for the command itself and processing handle for the selection
part (that is selection for non-reporting tools).
In the same way that process_each_vg() can be passed
a single VG name to process, also allow process_each_lv()
to be passed a single VG name and LV name to process.
Add support for active cache LV.
Handle --cachemode args validation during command line processing.
Rework some lvm2 internal to use lvm2 defined CACHE_MODE enums
indepently on libdm defines and use enum around the code instead
of passing and comparing strings.
Commit abd9618dd8 tried to improve
parsing of vg name from logical path - but still missed couple
corner cases.
This patch further improves the logic and reuses
validate_lvname_param() for parsing of lv_name.
Also explicitly checks for LVM_VG_NAME in the right case.
So now also properly parses cases like:
'lvconvert --repairt vg/'
and will provide correct error message.
Since we want to read env LVM_VG_NAME vg names,
we cannot just check LV names which do contain '/'.
So before the patch commands like:
> lvconvert --repair vg
Before:
Please provide a valid volume group name
After:
Path required for Logical Volume "vg".
Please provide a valid volume group name
> LVM_VG_NAME=vg lvconvert --repair vg
Before:
Please provide a valid volume group name
After:
Can't find LV vg in VG vg
Avoid internal error message where thin pool repair code tries to
fix cache pool - was catched later in code stack, so rather
catch this early and make the repair function exlusive
to thin pools.
So far we have no code for repairing cache pools
(other then the automatic during activation/deactivation).
Add missing display_lvname in _lvconvert_merge_thin_snapshot().
Also when we detect missing origin, report Internal error,
which would likely be the primary fault here
(and avoid dereft of NULL origin as noticed by Coverity).
Coverity here is not fully-in-picture - but please it
with validation of pointer which currently cannot be null,
since we always return at least empty string.
This option could never have been printed in lvm2 metadata, so it could
be safely removed as it could have been set only as 0.
These configurable setting is supported via metadata profile.
Since we may want to swap names when LVs are complex types, we cannot
avoid doing full renames on both LV stacks.
Temporarily use 'pvmove_tmeta' as unused name to prevent validation troubles.
Certain stacks of cached LVs may have unexpected consequences.
So add a warning function called when LV is cached to detect
such caces and WARN user about them - the best we could do ATM.
All cache args could be specified when caching LV
(means converting LV to cached).
When --cachemode arg is given during cache-pool conversion,
store it in the metadata.
https://bugzilla.redhat.com/show_bug.cgi?id=1255184
The unlock call will fail in expected and normal cases,
and should not cause the command to fail. (An actual
unlock in the lock manager should never fail.)
Change logic and naming of some internal API functions.
cache_set_mode() and cache_set_policy() both take segment.
cache mode is now correctly 'masked-in'.
If the passed segment is 'cache' segment - it will automatically
try to find 'defaults' according to profiles if the are NOT
specified on command line or they are NOT already set for cache-pool.
These defaults are never set for cache-pool.
Request a transient LV lock from lvmlockd when
converting an LV. If the LV is inactive when
lvconvert is run, the LV lock will be acquired
and then released when the command is done.
If the LV is active, a persistent lock exists
already and the transient lock request does nothing.
This fixes the issue that had been mentioned in the
comment previously.
. the poll check will eventually call finish which will
write the VG, so an ex VG lock is needed from lvmlockd.
. fix missing unlock on poll error path
. remove the lockd locking while monitoring the progress
of the command, as suggested by the earlier FIXME comment,
as it's not needed.
Recent change to move the polling outside of core lvconvert
code was wrongly using 'lv' and 'vg' structs which can't be
used outside of the core code, which caused seg fault.
Properly isolate all use of lv structs within the core of
the lvconvert code, saving any information necessary,
(esp lvid). After the core of lvconvert is done, use
the saved information to do polling.
FIXME: the need for is_merging_origin and is_merging_origin_thin
in this patch is ugly, and a cleaner way should be found to deal
with that than what is done here.
Also it effectively removed all hacks in _lvconvert_merge_single
performing ugly: VG reread, unlock, polling, lock sequence.
Moreover all polling operations are postponed after all conversions
are finished.
lvm2 (while locking via lvmlockd) should now be able to run with
or without lvmpolld while performing poll operations originating
in lvconvert command.
Signed-off-by: Ondrej Kozina <okozina@redhat.com>
