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# $FreeBSD$ 29# 30 31[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 32 33[ ! -d /mnt2 ] && mkdir /mnt2 34mount | grep "/dev/md0 on /mnt2" > /dev/null && umount /mnt2 35mdconfig -l | grep md0 > /dev/null && mdconfig -d -u 0 36rm -f /tmp/.snap/pho 37trap "rm -f /tmp/.snap/pho" 0 38 39for i in `jot 64`; do 40 date '+%T' 41 mksnap_ffs /tmp /tmp/.snap/pho 42 mdconfig -a -t vnode -f /tmp/.snap/pho -u 0 -o readonly 43 mount -o ro /dev/md0 /mnt2 44 45 ls -l /mnt2 > /dev/null 46 r=`head -c4 /dev/urandom | od -N2 -tu4 | sed -ne '1s/ *$//;1s/.* //p'` 47 sleep $(( r % 120 )) 48 49 umount /mnt2 50 mdconfig -d -u 0 51 rm -f /tmp/.snap/pho 52done 53