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Avoid possible udev race - since dmsetup create is
not using the same cookie logic as lvm2 commands,
try to avoid racing on some systems with udev scanning.
The option can be used in multiple ways (like --cachesettings):
--integritysettings key=val
--integritysettings 'key1=val1 key2=val2'
--integritysettings key1=val1 --integritysettings key2=val2
Use with lvcreate or lvconvert when integrity is first enabled
to configure:
journal_sectors
journal_watermark
commit_time
bitmap_flush_interval
allow_discards
Use with lvchange to configure (only while inactive):
journal_watermark
commit_time
bitmap_flush_interval
allow_discards
lvchange --integritysettings "" clears any previously configured
settings, so dm-integrity will use its own defaults.
lvs -a -o integritysettings displays configured settings.
Calculates expected size before/after reshapes adding/removing stripes
to/from RaidLVs with levels 4/5/6/10 and compares it with the actual
one the block layer shows. Stripes reshaped to are listed in the
tst_stripes variable. mkfs/fsck/resize2fs the respective RaidLVs
to confirm ext4 can be resized accordingly without issues.
When PVs are created on LVs, remove the devices file entries
for the PVs when the LVs are removed. In general, the devices
file entries should be removed with lvmdevices --deldev when
the LVs are removed (lvremove is the equivalent of detaching
a device from the system when layering PVs on LVs.)
This change is effectively an automatic lvmdevices --deldev
command that is built into lvremove when the LV has a PV on it.
Add slight delay for waiting until 'started' dmeventd is
responsing to other 'dmeventd -i' command.
TODO: race observed here is somewhat unclear, might need some more
details
There is no reason to wait for 10sec when removing 'vg' at test
exit - we just need to kill 'sleep 10' process forked from flock.
(Not using 'flock -F' as this flag is not across all machines used
for testing)
Look not only for whole 64byte sequence,
but seek also 32byte, 16byte and 8byte parts of the
key.
Currently to pass memcpy ZMM problems add possible
workaround in the form of GLIBC_TUNABLES setting.
Avoid using 'lvs' from 'get' shell - as that would wait until
whole group of processes is finished.
TODO: rethink what would be the point of starting 'dmeventd' with lvs.
It seems to break some rules.
Handle the case, where we 'kill -9' running dmeventd,
and restarting 'dmeventd -R' manages to still contact this
'zombie' damone and manages to get list of monitored devices
out of this and eventually 'run' new and in this case
unexpected instance of dmeventd.
Some test do expect event_activation to be set.
So add explicit configuring of this setting in tests,
but also add new default which kind of does it globally
as it's expected default (yet our testing rpms might
be create with disabled event_activation)
By adding this to each test individually - it's now easy
to locate such tests...
Occasionally this test fails as soemtimes UUID actually
may constain LV[d] string causing it to grep mismatch
UUID and LV name and eventually fail test for wrong reason.
As a simple workaround print the LV name first and
check the name is followed by a space character.
Here we actually need to slowdown only $dev2 - since repair operation
is only reading data from this device and compares it with origin $dev1,
and if they match there is no write...
