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When executing in the main thread, if we encounter an exception we
will bypass the notify_all call on the condition and the calling thread
never wakes up.
@staticmethod
def runner(obj):
# noinspection PyProtectedMember
Exception thrown here
----> obj._run()
So the following code doesn't run, which causes calling thread to hang
with obj.cond:
obj.function_complete = True
obj.cond.notify_all()
Additionally for some unknown reason the stderr is lost.
Best guess is it's something to do with scheduling a python function
into the GLib.idle_add. That made finding issue quite difficult.
There's nothing special about /boot other than it's used during boot.
But when blkdeactivate is called either on all devices or including a
device where the /boot is on top, we should also include this mount
point when doing unmount before deactivation of supported devices.
The new blkdeactivate -r|mdraidoption wait causes blkdeactivate to wait
for any resync/recovery/reshape that is currently in progress before
deactivating the device.
If this option is used, blkdeactivate calls mdadm -W|--wait before
mdadm -S|--stop.
Revert dc50f2f4a0.
We're canonicalizing/escaping the names here and we're reusing the
variable name so the code doesn't need to use extra variables and
further assignments that may confuse us. Let's keep the code simple.
The
local name=(...$name)
is not the same as
local name
name=(...$name)
(I know various code-checking tools fuss about this and recommend
the 2nd way, but let's ignore those tools' nitpicking here please.)
There was a typo in blkdeactivate --dmoption/--lvmoption/mpathoption,
it had missing "s" at the end and it was not recognized properly, only
short names for the options (-d/-l/-m).
When certain cmd def RULE's fail, the error messages can
sometimes be confusing. This expands the error messages
to help clarify why the rule failed, especially in cases
where options are used incorrectly.
In a shared VG, only allow pvmove with a named LV,
so that only PE's used by the LV will be moved.
The LV is then activated exclusively, ensuring that
the PE's being moved are not used from another host.
Previously, pvmove was mistakenly allowed on a full PV.
This won't work when LVs using that PV are active on
other hosts.
Avoid starting test, when test dir has less then 50M of free space.
Better to crash early before letting die machine on weird crash
in OOM cases...
Also show free disk space when test starts
Enable handling of --poolmetadataspare so if user can prevent
creation of _pmspare volume during --repair operation (just
like during actual lvcreate or lvconvert) for pool volumes.
The following commands now pass the device list through a
--select|-S filter before processing:
suspend resume clear wipe_table remove deps status table
In a shared VG, lvconvert must be used to create thin pools
and cache pools, not the lvcreate variants of those commands.
Deny these cases early in lvcreate using the new command defs.
Denying these cases deeper in the code was missing some
cleanup of the partially completed command.
Revert the lvmlockd.c changes from:
commit 0bf836aa14
"tidy: prefer not using else after return"
The commit introduced at least one regression, which broke
lvcreate of a thin pool in a shared VG.
ATM we have several instances of daemonizing code.
Each has its 'special' logic so not completely easy
to unify them all into a single routine.
Start to unify them and use one strategy for rediricting
all input/outpus to /dev/null - use 'dup2' function for this
and open /dev/null before fork to make sure it's available.
When file-locking mode failed on locking, such description was leaked
(typically not an issue since command usually exists afterwards).
So shirt close() at the end of function and use it in all error paths.
Also make sure, when interrrupt is detected, it's really not holding
lock and returns 0.
lvmcache_foreach_mda() can fail for numerous reasons
and failing error code cannot be ignored (out-of-memory...)
TODO: might need more error handling tunning.
gcc warns here about storring 69 bytes in 64 byte array (losing
potentially 4 bytes from 'ls->name').
lvmlockd-core.c:2657:36: warning: ‘%s’ directive output may be truncated writing up to 64 bytes into a region of size 60 [-Wformat-truncation=]
snprintf(tmp_name, MAX_NAME, "REM:%s", ls->name);
^~
lvmlockd-core.c:2657:2: note: ‘snprintf’ output between 5 and 69 bytes into a destination of size 64
snprintf(tmp_name, MAX_NAME, "REM:%s", ls->name);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Replaced with slightly better code - but it still misses error path what
to do if the name would be truncated... - so added FIXME.
Also using all bytes for snprintf() buffer size
(as the size is with \0 included)
After the internal lvmlock LV (holding sanlock leases) is
extended to hold more leases, it needs to be zeroed.
sanlock expects to see either zeroed blocks or blocks
initialized with leases.
currently, lvcreate for sanlock find the free lock offset
from the beginning of the lvmlock every time.
after created thousands of lvs, it will issue thousands of read
ios for lvcreate to find free lock offset.
remeber the last free lock offset will greatly reduce the impact
Signed-off-by: Zhang Huan <zhanghuan@huayun.com>
