#! /bin/bash
# FS QA Test No. 456
#
# This test is motivated by a bug found in ext4 during random crash
# consistency tests.
#
# Fixed by commit 51e3ae81ec58 ("ext4: fix interaction between i_size,
# fallocate, and delalloc after a crash")
#
#-----------------------------------------------------------------------
# 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()
{
	_cleanup_flakey
	cd /
	rm -f $tmp.*
}
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
_require_dm_target flakey

rm -f $seqres.full

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

_init_flakey
_mount_flakey

# See this post for reverse engineering of this auto generated test:
# https://marc.info/?l=linux-ext4&m=151137380830381&w=2
fsxops=$tmp.fsxops
cat <<EOF > $fsxops
write 0x137dd 0xdc69 0x0
fallocate 0xb531 0xb5ad 0x21446
collapse_range 0x1c000 0x4000 0x21446
write 0x3e5ec 0x1a14 0x21446
zero_range 0x20fac 0x6d9c 0x40000 keep_size
mapwrite 0x216ad 0x274f 0x40000
EOF
run_check $here/ltp/fsx -d --replay-ops $fsxops $SCRATCH_MNT/testfile

_flakey_drop_and_remount
_unmount_flakey
_cleanup_flakey
_check_scratch_fs

echo "Silence is golden"

status=0
exit