#! /bin/bash
# FS QA Test No. 322
#
# Runs various rename fsync tests to cover some rename fsync corner cases.
#
#-----------------------------------------------------------------------
# Copyright (c) 2013 Fusion IO. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#-----------------------------------------------------------------------
#

seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"

here=`pwd`
status=1	# failure is the default!

_cleanup()
{
	_cleanup_flakey
}
trap "_cleanup; exit \$status" 0 1 2 3 15

# 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_nocheck
_require_dm_target flakey
_require_metadata_journaling $SCRATCH_DEV

rm -f $seqres.full

_clean_working_dir()
{
	_mount_flakey
	rm -rf $SCRATCH_MNT/foo $SCRATCH_MNT/bar
	_unmount_flakey
}

# Btrfs wasn't making sure the new file after rename survived the fsync
_rename_test()
{
	echo "fsync rename test"
	_mount_flakey
	$XFS_IO_PROG -f -c "pwrite 0 1M" -c "fsync" $SCRATCH_MNT/foo \
		> $seqres.full 2>&1 || _fail "xfs_io failed"
	mv $SCRATCH_MNT/foo $SCRATCH_MNT/bar
	$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/bar
	md5sum $SCRATCH_MNT/bar | _filter_scratch

	_flakey_drop_and_remount

	md5sum $SCRATCH_MNT/bar | _filter_scratch
	_unmount_flakey
	_check_scratch_fs $FLAKEY_DEV
	[ $? -ne 0 ] && _fatal "fsck failed"
}

# Btrfs was dropping some of the modified extents in between fsyncs if we
# renamed.
_write_after_fsync_rename_test()
{
	echo "fsync rename test"
	_mount_flakey
	$XFS_IO_PROG -f -c "pwrite 0 1M" -c "fsync" -c "pwrite 2M 1M" \
		-c "sync_range -b" $SCRATCH_MNT/foo > $seqres.full 2>&1 || _fail "xfs_io failed"
	mv $SCRATCH_MNT/foo $SCRATCH_MNT/bar
	$XFS_IO_PROG -c "fsync" $SCRATCH_MNT/bar
	md5sum $SCRATCH_MNT/bar | _filter_scratch

	_flakey_drop_and_remount

	md5sum $SCRATCH_MNT/bar | _filter_scratch
	_unmount_flakey
}

_scratch_mkfs >> $seqres.full 2>&1

# Create a basic flakey device that will never error out
_init_flakey

_rename_test
_clean_working_dir
_write_after_fsync_rename_test

status=0
exit