#! /bin/bash
# FS QA Test No. 458
#
# Regression test for xfs leftover CoW extents after truncate
# and umount
#
# Fixed by commit 3af423b03435 ("xfs: evict CoW fork extents when performing
# finsert/fcollapse")
#
#-----------------------------------------------------------------------
# Copyright (C) 2017 CTERA Networks. All Rights Reserved.
# Author: Amir Goldstein <amir73il@gmail.com>
#
# 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`
tmp=/tmp/$$
status=1	# failure is the default!

_cleanup()
{
	cd /
	rm -f $tmp.*
}
trap "_cleanup; exit \$status" 0 1 2 3 15

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

# real QA test starts here
_supported_fs generic
_supported_os Linux
_require_scratch_reflink
_require_cp_reflink
_require_xfs_io_command "fzero"
_require_xfs_io_command "fcollapse"
_require_xfs_io_command "finsert"
_require_xfs_io_command "truncate"

rm -f $seqres.full

_scratch_mkfs >/dev/null 2>&1
_scratch_mount

$XFS_IO_PROG -f -c "pwrite 0 0x40000" \
	$SCRATCH_MNT/foo > /dev/null 2>&1

_cp_reflink $SCRATCH_MNT/foo $SCRATCH_MNT/bar

$XFS_IO_PROG -f -c "fzero -k 0x169f 0x387c" \
		-c "fcollapse 0x29000 0xd000" \
		-c "finsert 0 0x8000" \
		-c "truncate 0x8000" \
	$SCRATCH_MNT/foo > /dev/null 2>&1

echo "Silence is golden"
status=0
exit