1*8a272653SPeter Holm#!/bin/sh 2*8a272653SPeter Holm 3*8a272653SPeter Holm# 4*8a272653SPeter Holm# Copyright (c) 2008 Peter Holm <pho@FreeBSD.org> 5*8a272653SPeter Holm# All rights reserved. 6*8a272653SPeter Holm# 7*8a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 8*8a272653SPeter Holm# modification, are permitted provided that the following conditions 9*8a272653SPeter Holm# are met: 10*8a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 11*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 12*8a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 13*8a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 14*8a272653SPeter Holm# documentation and/or other materials provided with the distribution. 15*8a272653SPeter Holm# 16*8a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17*8a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*8a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*8a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20*8a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*8a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*8a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*8a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*8a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*8a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*8a272653SPeter Holm# SUCH DAMAGE. 27*8a272653SPeter Holm# 28*8a272653SPeter Holm 29*8a272653SPeter Holm# Stress test by performing parallel calls to mount and umount. Alternate 30*8a272653SPeter Holm# between forced and non-forced unmounts. 31*8a272653SPeter Holm 32*8a272653SPeter Holm# https://people.freebsd.org/~pho/stress/log/kostik169.txt 33*8a272653SPeter Holm# https://people.freebsd.org/~pho/stress/log/kostik487.txt 34*8a272653SPeter Holm 35*8a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 36*8a272653SPeter Holm 37*8a272653SPeter Holm. ../default.cfg 38*8a272653SPeter Holm 39*8a272653SPeter Holmmounts=15 # Number of parallel scripts 40*8a272653SPeter Holm: ${nullfs_srcdir:=/tmp} 41*8a272653SPeter Holm: ${nullfs_dstdir:=$mntpoint} 42*8a272653SPeter Holm 43*8a272653SPeter Holmif [ $# -eq 0 ]; then 44*8a272653SPeter Holm for i in `jot $mounts`; do 45*8a272653SPeter Holm [ ! -d ${nullfs_dstdir}$i ] && mkdir ${nullfs_dstdir}$i 46*8a272653SPeter Holm mount | grep -q " ${nullfs_dstdir}$i " && 47*8a272653SPeter Holm umount ${nullfs_dstdir}$i 48*8a272653SPeter Holm done 49*8a272653SPeter Holm 50*8a272653SPeter Holm # start the parallel tests 51*8a272653SPeter Holm for i in `jot $mounts`; do 52*8a272653SPeter Holm ./$0 $i & 53*8a272653SPeter Holm done 54*8a272653SPeter Holm wait 55*8a272653SPeter Holm 56*8a272653SPeter Holm for i in `jot $mounts`; do 57*8a272653SPeter Holm umount ${nullfs_dstdir}$i > /dev/null 2>&1 58*8a272653SPeter Holm done 59*8a272653SPeter Holm exit 0 60*8a272653SPeter Holmelse 61*8a272653SPeter Holm # The test: Parallel mount and unmounts 62*8a272653SPeter Holm start=`date '+%s'` 63*8a272653SPeter Holm while [ `date '+%s'` -lt $((start + 300)) ]; do 64*8a272653SPeter Holm m=$1 65*8a272653SPeter Holm mount_nullfs $nullfs_srcdir ${nullfs_dstdir}$m > \ 66*8a272653SPeter Holm /dev/null 2>&1 67*8a272653SPeter Holm opt=`[ $(( m % 2 )) -eq 0 ] && echo -f` 68*8a272653SPeter Holm while mount | grep -q ${nullfs_dstdir}$m; do 69*8a272653SPeter Holm umount $opt ${nullfs_dstdir}$m > /dev/null 2>&1 70*8a272653SPeter Holm done 71*8a272653SPeter Holm done 72*8a272653SPeter Holmfi 73