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Add new logic to identify each unique operation and route
it to the correct function to perform it. The functions
that perform the conversions remain unchanged.
This new code checks every allowed combination of LV type
and requested operation, and for each valid combination
calls the function that performs that conversion.
The first stage of option validation which checks for
incompatible combinations of command line options, is done
done before process_each is called. This is unchanged.
(This new code will allow that first stage validation to
be simplified in a future commit.)
The second stage of checking options against the specific
LV type is done by this new code. For each valid combination
of operation + LV type, the new code calls an existing
function that implements it.
With this in place, the ad hoc checks for valid combinations
of LV types and operations can be removed from the existing
code in a future commit.
(The #if 0 is used to keep the patch clean, and the
disabled code will be removed by a following patch.)
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.)
