#! /bin/bash
# FS QA Test No. 297
#
# Test freeze/unfreeze file system randomly under fsstress
# Regression test for commit:
# 437a255 xfs: fix direct IO nested transaction deadlock.
#
#-----------------------------------------------------------------------
# Copyright (c) 2013 Red Hat, Inc.  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`
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
    cd /
    rm -f $tmp.*
}

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

# real QA test starts here
_supported_fs xfs
_supported_os IRIX Linux

_require_scratch
_require_freeze

rm -f $seqres.full
_scratch_mkfs_xfs -d agcount=16,su=256k,sw=12 -l su=256k,size=2560b >/dev/null 2>&1
_scratch_mount >/dev/null 2>&1

STRESS_DIR="$SCRATCH_MNT/testdir"
mkdir -p $STRESS_DIR

$FSSTRESS_PROG -d $STRESS_DIR -n 100 -p 1000 $FSSTRESS_AVOID >/dev/null 2>&1 &

# Freeze/unfreeze file system randomly
echo "Start freeze/unfreeze randomly" | tee -a $seqres.full
LOOP=10
while [ $LOOP -gt 0 ];do
	TIMEOUT=`expr $RANDOM % 5`
	sleep $TIMEOUT
	echo "* Freeze file system after sleeping $TIMEOUT seconds" >>$seqres.full
	xfs_freeze -f $SCRATCH_MNT
	if [ $? -ne 0 ];then
		echo " - Error: freeze filesystem failed" | tee -a $seqres.full
	fi
	TIMEOUT=`expr $RANDOM % 3`
	sleep $TIMEOUT
	echo "* Unfreeze file system after sleeping $TIMEOUT seconds" >>$seqres.full
	xfs_freeze -u $SCRATCH_MNT
	if [ $? -ne 0 ];then
		echo " - Error: unfreeze filesystem failed" | tee -a $seqres.full
	fi
	let LOOP=$LOOP-1
done
echo "Test done" | tee -a $seqres.full
killall -q $FSSTRESS_PROG
wait

status=0
exit