#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test No. 510
#
# Test that if we move a file from a directory B to a directory A, replace
# directory B with directory A, fsync the file and then power fail, after
# mounting the filesystem the file has a single parent, named B and there
# is no longer any directory with the name A.
#
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 generic
_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

# Create our test directories and file.
mkdir $SCRATCH_MNT/testdir
mkdir $SCRATCH_MNT/testdir/A
mkdir $SCRATCH_MNT/testdir/B
touch $SCRATCH_MNT/testdir/B/bar

# Make sure everything done so far is durably persisted.
sync

# Now move our file bar from directory B to directory A and then replace
# directory B with directory A, also renaming directory A to B. Finally
# fsync file bar.
mv $SCRATCH_MNT/testdir/B/bar $SCRATCH_MNT/testdir/A/bar
mv -T $SCRATCH_MNT/testdir/A $SCRATCH_MNT/testdir/B
$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/testdir/B/bar

# Simulate a power failure and mount the filesystem. We expect file bar
# to exist and have a single parent directory, named B, and that no
# directory named A exists.
_flakey_drop_and_remount

echo "Filesystem content after power failure:"
ls -R $SCRATCH_MNT/testdir | _filter_scratch

_unmount_flakey

status=0
exit