[LU-11158] PFL component instantiation is not replayed properly

Blocker — Wed, 27 Feb 2019 14:06:34 +0000

While investigating ~~LU-10961~~ I have found that component instantiation is not replayed. Test showing the problem:

test_132a() {
	[ $(lustre_version_code $SINGLEMDS) -lt $(version_code 2.9.90) ] &&
		skip "Do not support PFL files before 2.10"

	$LFS setstripe -E 1M -c 1 -E EOF -c 2 $DIR/$tfile
	replay_barrier $SINGLEMDS
	# write over the first component size cause next component instantiation
	dd if=/dev/urandom of=$DIR/$tfile bs=1M count=1 seek=1 ||
		error "dd to $DIR/$tfile failed"

	cksum=$(md5sum $DIR/$tfile | awk '{print $1}')
	$LFS getstripe -I2 $DIR/$tfile | grep -q lmm_objects ||
		error "Component #1 was not instantiated"

	fail $SINGLEMDS

	cksum2=$(md5sum $DIR/$tfile | awk '{print $1}')
	if [ $cksum != $cksum2 ] ; then
		error_noexit "New checksum $cksum2 does not match original $cksum"
	fi
	$LFS getstripe -I2 $DIR/$tfile | grep -q lmm_objects ||
		error "Component #1 instantiation was not replayed"
}
run_test 132a "PFL new component instantiate replay"

it is double checked here - with checksums and by checking that next component has lmm_objects assigned. Both are failing in master.

Whamcloud Community JIRA

[LU-11158] PFL component instantiation is not replayed properly