#!/bin/sh

#
# Copyright (c) 2008-2011 Peter Holm <pho@FreeBSD.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#

# phk has seen freezes with this newfs option: "-b 32768 -f  4096 -O2"
#
# Deadlocks seen with this test and:
#          newfs -b 4096 -f 4096 -O2 md0c on a 128 Mb FS
#          newfs -b 4096 -f 1024 -O2 md0c on a 64 Mb FS
# 20070505 newfs -b 4096 -f 4096 -O2 md0c on a 32 Mb FS: panic: lockmgr: locking against myself

[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1

. ../default.cfg

size=$((32 * 1024 * 1024))
opt="-O2"	# newfs option. Eg. -U

mount | grep "$mntpoint" | grep -q md$mdstart && umount $mntpoint
[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart

s=0
while [ $size -le $((128 * 1024 * 1024)) ]; do
	mb=$((size / 1024 / 1024))
	rm -f $diskimage
	dd if=/dev/zero of=$diskimage bs=1m count=$mb status=none
	mdconfig -a -t vnode -f $diskimage -u $mdstart ||
	    { rm -f $diskimage; exit 1; }
	blocksize=4096
	while [ $blocksize -le 65536 ]; do
		for i in 1 2 4 8; do
			fragsize=$((blocksize / i))
			newfs -b $blocksize -f $fragsize $opt md$mdstart > \
			    /dev/null 2>&1
			mount /dev/md$mdstart $mntpoint
			export RUNDIR=$mntpoint/stressX
			export runRUNTIME=15s
			export RUNTIME=$runRUNTIME
			export CTRLDIR=$mntpoint/stressX.control
			(cd ..; ./run.sh disk.cfg) > /dev/null 2>&1 &
			sleep 15
			../tools/killall.sh
			wait
			while mount | grep "$mntpoint" | \
			    grep -q md$mdstart; do
				umount $mntpoint > /dev/null 2>&1
			done
			checkfs /dev/md$mdstart || s=1
		done
		blocksize=$((blocksize * 2))
	done
	mdconfig -d -u $mdstart
	size=$((size + 32 * 1024 * 1024))
done
rm -f $diskimage
exit $s