1#!/bin/sh 2 3# 4# Copyright (c) 2008, 2011 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# Hunt for deadlock that could occur running umount and quota at the same time 30# "panic: dqsync: file" seen: 31# https://people.freebsd.org/~pho/stress/log/quota10.txt 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34[ "`sysctl -in kern.features.ufs_quota`" != "1" ] && exit 0 35 36. ../default.cfg 37 38mounts=15 # Number of parallel scripts 39mdstart=$mdstart # Use md unit numbers from this point 40D=$diskimage 41export PATH_FSTAB=/tmp/fstab 42 43if [ $# -eq 0 ]; then 44 rm -f $PATH_FSTAB 45 for i in `jot $mounts`; do 46 m=$((i + mdstart - 1)) 47 [ ! -d ${mntpoint}$m ] && mkdir ${mntpoint}$m 48 mount | grep "$mntpoint" | grep -q md$m && 49 umount ${mntpoint}$m 50 [ -c /dev/md$m ] && mdconfig -d -u $m 51 52 dd if=/dev/zero of=$D$m bs=1m count=1 status=none 53 mdconfig -a -t vnode -f $D$m -u $m 54 newfs md${m} > /dev/null 2>&1 55 echo "/dev/md${m} ${mntpoint}$m ufs rw,userquota 2 2" \ 56 >> $PATH_FSTAB 57 mount ${mntpoint}$m 58 edquota -u -f ${mntpoint}$m -e \ 59 ${mntpoint}$m:100000:110000:15000:16000 root 60 umount ${mntpoint}$m 61 done 62 sync;sync;sync 63 64 # start the parallel tests 65 touch /tmp/$0 66 for i in `jot $mounts`; do 67 m=$((i + mdstart - 1)) 68 ./$0 $m & 69 ./$0 find $m & 70 done 71 wait 72 73 for i in `jot $mounts`; do 74 m=$((i + mdstart - 1)) 75 mdconfig -d -u $m 76 rm -f $D$m 77 done 78 rm -f $PATH_FSTAB 79else 80 if [ $1 = find ]; then 81 while [ -r /tmp/$0 ]; do 82 ( 83 quotaon ${mntpoint}$2 84 quotaoff ${mntpoint}$2 85 ) 2>&1 | egrep -v "No such file or directory" 86 done 87 else 88 89 # The test: Parallel mount and unmounts 90 start=`date '+%s'` 91 while [ $((`date '+%s'` - start)) -lt 1200 ]; do 92 m=$1 93 opt=`[ $(( m % 2 )) -eq 0 ] && echo -f` 94 mount $opt /dev/md${m} ${mntpoint}$m 95 while mount | grep -qw $mntpoint$m; do 96 opt=$([ $((`date '+%s'` % 2)) -eq 0 ] && 97 echo "-f") 98 umount $opt ${mntpoint}$m > /dev/null 2>&1 99 done 100 done 101 rm -f /tmp/$0 102 fi 103fi 104exit 0 105