#! /bin/bash
# FS QA Test No. btrfs/014
#
# Btrfs balance tests
#
#-----------------------------------------------------------------------
# Copyright (c) 2013 Fujitsu.  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!

_create_snapshot()
{
	for i in $(seq 20)
	do
		$BTRFS_UTIL_PROG subvolume snapshot $SCRATCH_MNT $SCRATCH_MNT/snapshot0 >/dev/null
		$BTRFS_UTIL_PROG subvolume delete $SCRATCH_MNT/snapshot0 >/dev/null
	done
}

_balance()
{
	for i in $(seq 20)
	do
		$BTRFS_UTIL_PROG balance start $SCRATCH_MNT >/dev/null
	done
}

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

# real QA test starts here
_supported_fs btrfs
_supported_os Linux

_require_scratch
_scratch_mkfs >/dev/null 2>&1
_scratch_mount

echo "Tip: Run dmesg to see the error on failure"

_create_snapshot &

_balance &

wait

status=0
exit
