tests/generic/488

#! /bin/bash
# FS QA Test 488
#
# Test having many file descriptors referring to deleted files open. Regression
# test for patch "Btrfs: fix ENOSPC caused by orphan items reservations".
#
#-----------------------------------------------------------------------
# Copyright (c) 2018 Omar Sandoval.  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.*
}

. ./common/rc
. ./common/filter

rm -f $seqres.full

_supported_fs generic
_supported_os Linux
_require_scratch
_require_test_program "multi_open_unlink"

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

test_file="$SCRATCH_MNT/$seq"

ulimit -n $((16 * 1024))
# ~10000 files on a 1 GB filesystem should be no problem.
$here/src/multi_open_unlink -f $SCRATCH_MNT/$seq -n 10000 -s 0

echo "Silence is golden"

status=0
exit