1#!/bin/sh 2 3# 4# Copyright (c) 2009 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# Deadlock seen when deleting the snapshots during an "ls" of the FS 30 31# Based on test scenario by John Kozubik <john at kozubik dot com> 32# kern/94769: [ufs] Multiple file deletions on multi-snapshotted filesystems 33# causes hang 34 35# panic: handle_workitem_remove: bad dir delta 36# https://people.freebsd.org/~pho/stress/log/log0121.txt 37 38[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 39 40. ../default.cfg 41 42mount | grep -q /dev/md${mdstart}$part && umount -f /dev/md${mdstart}$part 43mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 44 45parallel=20 46size=25 # Gb 47mx=$((`sysctl -n hw.physmem` / 1024 / 1024 / 1024 / 2)) 48[ $size -gt $mx ] && size=$mx 49 50[ `df -k $(dirname $diskimage) | tail -1 | awk '{print $4}'` -lt \ 51 $((size * 1024 * 1024)) ] && \ 52 echo "Not enough disk space." && exit 1 53truncate -s ${size}G $diskimage 54 55mdconfig -a -t vnode -f $diskimage -u $mdstart 56bsdlabel -w md$mdstart auto 57newfs -O2 $newfs_flags md${mdstart}$part > /dev/null 58mount /dev/md${mdstart}$part $mntpoint 59 60mycc -o /tmp/fstool -Wall ../tools/fstool.c 61for i in `jot $parallel`; do 62 (mkdir $mntpoint/test$i; cd $mntpoint/test$i; \ 63 timeout 10m /tmp/fstool -l -f 50 -n 500 -s 8k) & 64done 65wait 66rm -f /tmp/fstool 67 68mksnap_ffs $mntpoint $mntpoint/.snap/snap1 69mksnap_ffs $mntpoint $mntpoint/.snap/snap2 70mksnap_ffs $mntpoint $mntpoint/.snap/snap3 71mksnap_ffs $mntpoint $mntpoint/.snap/snap4 72mksnap_ffs $mntpoint $mntpoint/.snap/snap5 73mksnap_ffs $mntpoint $mntpoint/.snap/snap6 74mksnap_ffs $mntpoint $mntpoint/.snap/snap7 75mksnap_ffs $mntpoint $mntpoint/.snap/snap8 76mksnap_ffs $mntpoint $mntpoint/.snap/snap9 77 78for i in `jot $parallel`; do 79 rm -rf $mntpoint/test$i & 80done 81wait 82 83rm -rf $mntpoint/.snap/snap? & 84 85for i in `jot 10`; do 86 ls -lsrt $mntpoint > /dev/null 2>&1 87 sleep 2 88done 89wait 90 91umount /dev/md${mdstart}$part 92 93mount | grep -q /dev/md${mdstart}$part && umount -f /dev/md${mdstart}$part 94mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 95rm -f $diskimage 96