#! /bin/bash
# FS QA Test 371
#
# Run write(2) and fallocate(2) in parallel and the total needed data space
# for these operations don't exceed whole fs free data space, to see whether
# we will get any unexpected ENOSPC error.
#
#-----------------------------------------------------------------------
# Copyright (c) 2016 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!
trap "_cleanup; exit \$status" 0 1 2 3 15

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

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

# remove previous $seqres.full before test
rm -f $seqres.full

# Modify as appropriate.
_supported_fs generic
_supported_os Linux
_require_scratch
_require_xfs_io_command "falloc"

_scratch_mkfs_sized $((256 * 1024 * 1024)) >> $seqres.full 2>&1
_scratch_mount

testfile1=$SCRATCH_MNT/testfile1
testfile2=$SCRATCH_MNT/testfile2

echo "Silence is golden"
for ((i=0; i<100; i++)); do
	$XFS_IO_PROG -fc "pwrite 0 80M" $testfile1 >/dev/null
	rm -f $testfile1
done &
pids=$!

for ((i=0; i<100; i++)); do
	$XFS_IO_PROG -fc "falloc 0 80M" $testfile2 >/dev/null
	rm -f $testfile2
done &
pids="$pids $!"

wait $pids
status=0
exit