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Switch to allocate buffer from heap, since it might be potentially
bigger when extremaly large set of volumes would be monitored.
In case of allocation failure send ENOMEM message.
Also implicitelly ignore msg->size when msg->data is NULL.
Ensure daemon-io.h is used as a generic header included
with configure defines before other headers.
(In future all lvm2 libraries should settle on a single lib.h header)
Rename couple defines to better match header file names.
Config variables that are processed during setup prior to calling into
particular tools must not be accessed directly afterwards in case the
values already got overridden.
_process_config() already used the tests I'm removing here to call
lvmetad_set_active() and set up lvmetad_used().
This should be the preferred way of configuring lvm2 for udev/systemd
since otherwise one can end up with the processes run from udev (the
pvscan we run for lvmetad update on events) to be killed prematurely
and this can end up with LVM volumes not activated in the end.
This is sort of info we always ask people to retrieve when
inspecting problems in systemd environment so let's have this
as part of lvmdump directly.
The -s option does not need to be bound to systemd only. We could
add support for initscripts or any other system-wide/service tracking
info that can help us with debugging problems.
By default, the thin_pool_chunk_size is automatically calculated.
When defined, it disables the automatic calculation. So to be more
precise here, we should comment it out for the default.profile.
Also, "lvm dumpconfig --type profilable" was used here to generate
the default.profile content. This will be done automatically in the
future once we have the infrastructure for this in (see also
https://bugzilla.redhat.com/show_bug.cgi?id=1073415).
Perform two allocation attempts with cling if maximise_cling is set,
first with then without positional fill.
Avoid segfaults from confusion between positional and sorted sequential
allocation when number of stripes varies as reported here:
https://www.redhat.com/archives/linux-lvm/2014-March/msg00001.html
Set A_POSITIONAL_FILL if the array of areas is being filled
positionally (with a slot corresponding to each 'leg') rather
than sequentially (with all suitable areas found, to be sorted
and selected from).
Since the kill may take various amount of time,
(especially when running with valgrind)
check it's really pvmoved LV.
Restore initial restart of clvmd - it's currently
broken at various moments - basically killed lvm2
command may leave clvmd and confusing state leading
to reports of internal errors.
Prior adding new reply to the list, check
if the reply thread is not already finished.
In that case discard adding message
(which would otherwise be leaked).
Use mutex to access localsock values, so check
num_replies when the thread is not yet finished.
Check for threadid prior the mutex taking
(though this check is probably not really needed)
Added complexity with extra reply mutex is not worth the troubles.
The only place which may slightly benefit from this mutex is timeout
and since this is rather error case - let's convert it to
localsock.mutex and keep it simple.
Move the pthread mutex and condition creation and destroy
to correct place right after client memory is allocatedd
or is going to be released.
In the original place it's been in race with lvm thread
which could have still unlock mutex while it's been already
destroyed.
When TEST_MODE flag is passed around the cluster,
it's been use in thread unprotected way, so it may have
influenced behaviour of other running parallel lvm commands
(activation/deactivation/suspend/resume).
Fix it by set/query function only under lvm mutex.
For hold_un/lock function calls check lock_flags bits directly.
