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Drop unused passed cmd pointer from function.
TODO:
We have two similar functions (though not identical)
lv_manip.c: for_each_sub_lv()
metadata.c: _lv_each_dependency()
They seem to not always match - we should probably convert
to use only a single function.
Use proper vgmem memory pool for allocation of LV name in the vg
and check if new renamed LV is a valid name.
TODO: validation should really use also VG name, othewise we are not
able to tell "vgname-lvname" will be valid.
Commit 1a832398a7 moved
some code from _pvchange_single() to main pvchange() and
introduced exit code regression as return codes have not
been properly changed, thus pvchange command exited
with '0' exit code, even though it has reported error.
Also there is a missing vg unlock in error path.
Fix it by counting the total number of expected calls before
checking for pvname and also unlock and relase vg when
pv is not found.
For a quick overview of config when debugging and to quickly check
which values are different from defaults and which are not defined
in the config and for which defaults are used.
If clvmd does not hold any lock, it should also not keep any opened
device.
The reason for this patch is, that refresh_toolcontext calls
dev_cache_exit() which destroys whole device cache (even those with
opened file) - previous patch added recovery path to avoid memory
corruption, but opened files are still bugs that need to be fixed.
So this patch certainly kills many internal mirror & raid tests,
since they leak opened file descriptors (when tests are executed
with 'abort_on_error').
Operate with lvm_thread_exit while holding lvm_thread_mutex.
Don't leave unfinished work in the lvm thread queue
and always finish all queued tasks before exit,
so no cmd struct is left in the list.
(in-release fix)
When lvm2 command works with clvmd and uses locking in wrong way,
it may 'leak' certain file descriptors in opened (incorrect) state.
dev_cache_exit then destroys memory pool of cached devices, while
_open_devices list in dev-io.c was still referencing them if they
were still opened.
Patch properly calls _close() function to 'self-heal' from this
invalid state, but it will report internal error (so execution
with abort_on_internal_error causes immediate death). On the
normal 'execution', error is only reported, but memory state is
corrected, and linked list is not referencing devices from
released mempool.
For crash see: https://bugzilla.redhat.com/show_bug.cgi?id=1073886
