1#!/bin/sh 2 3# 4# Copyright (c) 2008 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# Stress test by performing parallel calls to mount and umount. Alternate 30# between forced and non-forced unmounts. 31 32# "kernel: g_dev_taste: make_dev_p() failed (gp->name=md10, error=17)" seen. 33 34[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 35 36. ../default.cfg 37 38mounts=15 # Number of parallel scripts 39D=$diskimage 40 41for i in `jot $mounts`; do 42 m=$(( i + mdstart - 1 )) 43 [ ! -d ${mntpoint}$m ] && mkdir ${mntpoint}$m 44 mount | grep "$mntpoint" | grep -q md$m && 45 umount ${mntpoint}$m 46 mdconfig -l | grep -q md$m && mdconfig -d -u $m 47 48 dd if=/dev/zero of=$D$m bs=1m count=1 status=none 49 mdconfig -a -t vnode -f $D$m -u $m || { rm -f $D$m; exit 1; } 50 newfs md${m} > /dev/null 51done 52 53# start the parallel tests 54for i in `jot $mounts`; do 55 m=$(( i + mdstart - 1 )) 56 start=`date +%s` 57 while [ $((`date +%s` - start)) -lt 300 ]; do 58 opt=`[ $(( m % 2 )) -eq 0 ] && echo -f` 59 mount /dev/md${m} ${mntpoint}$m 60 while mount | grep -q ${mntpoint}$m; do 61 umount $opt ${mntpoint}$m > /dev/null 2>&1 62 done 63 done & 64done 65wait 66 67for i in `jot $mounts`; do 68 m=$((i + mdstart - 1)) 69 mdconfig -d -u $m 70 rm -f $D$m 71done 72exit 0 73