#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved.
#
# FS QA Test No. 509
#
# Test that if we fsync a tmpfile, without adding a hard link to it, and then
# power fail, we will be able to mount the filesystem without triggering any
# crashes, warnings or corruptions.
#
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
_supported_os Linux
_require_scratch
_require_xfs_io_command "-T"
_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 tmpfile, write some data to it and fsync it. We want a power
# failure to happen after the fsync, so that we have an inode with a link
# count of 0 in our log/journal.
$XFS_IO_PROG -T \
	-c "pwrite -S 0xab 0 64K" \
	-c "fsync" \
	$SCRATCH_MNT | _filter_xfs_io

# Simulate a power failure and mount the filesystem to check that it succeeds.
_flakey_drop_and_remount

_unmount_flakey

status=0
exit