#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved.
#
# FSQA Test No. 166
#
# Test that if a power failure happens on a filesystem with quotas (qgroups)
# enabled while the quota rescan kernel thread is running, we will be able
# to mount the filesystem after the power failure.
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
	_cleanup_flakey
	cd /
	rm -f $tmp.*
}

# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/dmflakey

# real QA test starts here
_supported_fs btrfs
_supported_os Linux
_require_scratch
_require_dm_target flakey

rm -f $seqres.full

_scratch_mkfs  >>$seqres.full 2>&1
_require_metadata_journaling $SCRATCH_DEV
_init_flakey
_mount_flakey

# Enable qgroups on the filesystem. This will start the qgroup rescan kernel
# thread.
_run_btrfs_util_prog quota enable $SCRATCH_MNT

# Simulate a power failure, while the qgroup rescan kernel thread is running,
# and then mount the filesystem to check that mounting the filesystem does not
# fail.
_flakey_drop_and_remount

_unmount_flakey
_cleanup_flakey

echo "Silence is golden"
status=0
exit