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# Page fault seen: 30# https://people.freebsd.org/~pho/stress/log/devfs.txt 31# Fixed by r326851. 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35. ../default.cfg 36 37mounts=15 # Number of parallel scripts 38cont=/tmp/devfs.continue 39 40if [ $# -eq 0 ]; then 41 touch $cont 42 for i in `jot $mounts`; do 43 [ ! -d ${mntpoint}$i ] && mkdir ${mntpoint}$i 44 mount | grep -q "on ${mntpoint}$i " && umount ${mntpoint}$i 45 done 46 47 # start the parallel tests 48 for i in `jot $mounts`; do 49 ./$0 $i & 50 ./$0 find & 51 done 52 wait 53else 54 if [ $1 = find ]; then 55 while [ -r $cont ]; do 56 find ${mntpoint}* > /dev/null 2>&1 57 done 58 else 59 60 # The test: Parallel mount and unmounts 61 start=`date '+%s'` 62 while [ `date '+%s'` -lt $((start + 300)) ]; do 63 m=$1 64 mount -t devfs none ${mntpoint}$m 65 opt=`[ $(( m % 2 )) -eq 0 ] && echo -f` 66 while mount | grep -q " ${mntpoint}$m "; do 67 umount $opt ${mntpoint}$m > /dev/null 2>&1 68 done 69 done 70 rm -f $cont 71 fi 72fi 73