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vg_validate call is an adept to optimisation, it is very
ineeficient and slow.
Anyway, we should call it only before writing data to disk.
The call in lvmcache was just temporary validation,
we realy do not need to revalidate cached metadata
every time.
(Actually, I added that there just to prove that cache works
properly and forgot to remove it.)
Patch removes it from lvmcache completely, this can hit only
internal bug in export function (and this bug must
be detected in any vg_write call anyway before).
The _read_vg uses already hash for PVs to optimise
reading of large VGs and avoiding repeated PV list traversing.
Use the same aproach to speed up parsing VG with many LVs.
If dmeventd runs with -d flag, it doesn't fork into backgroud.
The command kill(getppid(), SIGTERM) attempts to kill the parent dmeventd
process, however, if there is no parent, it kills whatever process spawned
dmeventd. In case of debugging with gdb, the parent is gdb, thus
kill(getppid(), SIGTERM) kills the debugger.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
we are running the repair manually. If we don't ignore, then dmeventd
and the manually run repair can collide. (We should still get clean
results in such a case, but it makes it harder to validate the test
results.)
Code moves initilization of stats values to _memlock_maps().
For dmeventd we need to use mlockall() - so avoid reading config value
and go with _use_mlockall code path.
Patch assumes dmeventd uses C locales!
Patch needs the call or memlock_inc_daemon() before memlock_inc()
(which is our common use case).
Some minor code cleanup patch for _un/_lock_mem_if_needed().
If the error path of _register_for_event() calls _free_thread_status()
_lib_put() call is missing.
To make thing simpler move this _lib_put() into common error path code.
As the header file <sys/mman.h> was not included in dmeventd.c
thus missed definition of MCL_CURRENT so this patch only makes
it obvious we were not locking memory here.
This patch has no functional change.
Later part of this patch set handles mlockall() via memlock_inc_daemon().
clvmd does not propagate DMEVENTD_MONITOR_IGNORE.
Update get_activation_monitoring_mode() to check if the VG that the
LV is being activated in is clustered. If so, skip it.
Any get_activation_monitoring_mode() error will cause the associated LV
(or VG) to be skipped during activation. Both vgchange_single() and
lvchange_single(), which call get_activation_monitoring_mode(), are
called by their respective process_each_..() method.
in clvmd, dmevend, man, tests.
Don't include dependency files for clow and cscope.out targets
Improve dependency tracking for dmeventd and liblvm2cmd sources.
to obtain sources. Create make.tmpl target for
simplier generation of cflow files with the help of
CFLOW_LIST, CFLOW_LIST_TARGET, CFLOW_TARGET.
Still cflow usage is not perfect.
Move daemons/ and lib/ subtargets to their Makefiles so we don't get
double cleanup error during execution of distclean target.
Instead of duplicating clean target inside distclean target,
just use it as a subtarget and avoid add duplicating code.
This check-in enables the 'mirrored' log type. It can be specified
by using the '--mirrorlog' option as follows:
#> lvcreate -m1 --mirrorlog mirrored -L 5G -n lv vg
I've also included a couple updates to the testsuite. These updates
include tests for the new log type, and some fixes to some of the
*lvconvert* tests.
clvmd's do_lock_lv() already properly controls dmeventd monitoring based
on LCK_DMEVENTD_MONITOR_MODE in lock_flags -- though one small fix was
needed for this to work: _lock_for_cluster() must treat
dmeventd_monitor_mode()'s return as a tri-state value.
Also cleanup do_lock_lv() to:
- explicitly init_dmeventd_monitor() based on LCK_DMEVENTD_MONITOR_MODE
- no longer reset init_dmeventd_monitor() to default at the end of
do_lock_lv() -- it is unnecessary
This is the next preparatory step towards better --alloc anywhere
support and is not intended to break anything that currently works so
please report any problems - segfaults, bogus data in the new debug
messages, or if the code now chooses bizarre allocation layouts.
