1#!/bin/sh 2 3# 4# Copyright (c) 2012 Peter Holm <pho@FreeBSD.org> 5# All rights reserved. 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# Parallel mount and unmount of the same mount point 30# http://people.freebsd.org/~pho/stress/log/parallelumount3.txt 31 32[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 33 34. ../default.cfg 35 36parallel=40 37 38if [ $# -eq 0 ]; then 39 [ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 40 mdconfig -a -t swap -s 10m -u $mdstart || exit 1 41 newfs $newfs_flags md$mdstart > /dev/null 42 43 # start the parallel tests 44 for i in `jot $parallel`; do 45 ./$0 $i & 46 done 47 48 while kill -0 $! 2> /dev/null; do 49 for i in `jot 100`; do 50 find $mntpoint > /dev/null 2>&1 51 done 52 done 53 wait 54 55 while mount | grep $mntpoint | grep -q /dev/md; do 56 umount $mntpoint || sleep 1 57 done 58 mdconfig -d -u $mdstart 59 exit 0 60else 61 start=`date '+%s'` 62 while [ $((`date '+%s'` - start)) -lt 600 ]; do 63 mount /dev/md$mdstart $mntpoint 64 umount $mntpoint 65 mount 66 done > /dev/null 2>&1 67fi 68