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Not quite sure if this helps anything, some of testing
machines can't reliably remove scsi_debug, reporting
they are in use - but it's not easily reproducible...
aux wait_pvmove_lv_ready() now handles multiple pvmove LVs
at one go - which allows a bit fast checking - although
at some point we may need to switch to use delayed devs
since mirror throttling seems to be no longer working well,
as CPU are getting so fast, that most of data are already
pvmoved before throttling has any chance to do something...
When 'brd' device can be removed (is unused AKA not opened),
remove such device and use again for testing.
Let's assume user has no unused brd device left in the system.
When the 'tests' sometimes fail to cleanup devices, with this
change futher cleanup from some next test may evenually release
brd device and make it available for testing.
There is no easy way to detect, whether device supports zeroing,
and kernel also zeroes device when it's not directly supported,
but with extra message:
operation not supported error, dev X, sector Y op 0x9:(WRITE_ZEROES)...
So to avoid generating such message with every 'lvcreate', use for
zeroing of upto 8K just standard write of zeroed page.
(maybe we can go with even larger sizes).
Convert test to use only ext4 instead of 300M demanding XFS.
Shorten 'B' files to 4K and use 4K strip size with >raid1 arrays
so we do not risk spreading of the file across stripe.
Also use easier 'aux corrupt_dev()' method to introduce a bit
corruption into a block device with integrity.
TODO: shorten _wait_recalc (should't be needed).
Add function to corrupt some bytes in give file path presenting
a device. 1st. patern in just once replaced with 2nd. pattern.
Usable to simulate some bit corruption for integrity devices.
Convert test to use a single skeleton and only different pieces
keep in separate tests.
Lower raid disk usage to smaller size and switch to ext4
as way less demanding fileystem.
Instead of using size of 'empty header' in vdopool use fixed size 4K
for a 'wrappeing' vdo-pool device.
This fixes the issue when user tried to activate vdo-pool after
a conversion from vdo managed device with 'vgchange -ay' - where
this command activated all LVs with 'vdo-pool' wrapping device as well,
but this converted pool uses 0-length header.
This 4k size should usually prevent other tools like 'blkid' recognize
such device as anything - so it shouldn't cause any problems with
duplicate indentification of devices.
Correcting output results from configure script when
printing locking dir.
Shuffle dmfilemapd close to dmeventd option and tracing.
Couple indent changes.
syscall 186 is specific to x86 64bit. As this is different from arch
to arch and between same arch different arch size we will only grab
thread ID using built-in python support if it is supported.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2166931
