1#!/bin/sh 2 3# 4# Copyright (c) 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# Deadlock scenario based on kern/154228, fixed in r217880. 30 31[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 32 33. ../default.cfg 34 35size="2g" 36[ `swapinfo | wc -l` -eq 1 ] && exit 0 37[ `swapinfo -k | tail -1 | awk '{print int($4/1024/1024)}'` -lt \ 38 ${size%g} ] && exit 0 39m=$((mdstart + 1)) 40mp2=${mntpoint}$m 41mount | grep $mp2 | grep -q /dev/md && umount -f $mp2 42mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint 43[ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart 44[ -c /dev/md$m ] && mdconfig -d -u $m 45mkdir -p $mp2 46mdconfig -a -t swap -s $size -u $mdstart || exit 1 47 48gjournal load 49gjournal label -s 512m md$mdstart 50sleep .5 51newfs -J /dev/md$mdstart.journal > /dev/null 52mount -o async /dev/md$mdstart.journal $mntpoint 53 54here=`pwd` 55cd $mntpoint 56dd if=/dev/zero of=image bs=1m count=1k status=none 57mdconfig -a -t vnode -f image -u $m 58newfs md${m} > /dev/null 59mount /dev/md${m} $mp2 60# dd will suspend in wdrain 61echo "Expect \"$mp2: write failed, filesystem is full\"" 62dd if=/dev/zero of=$mp2/zero bs=1M > /dev/null 2>&1 63while mount | grep $mp2 | grep -q /dev/md; do 64 umount $mp2 || sleep 1 65done 66mdconfig -d -u $m 67cd $here 68 69gjournal sync 70while mount | grep $mntpoint | grep -q /dev/md; do 71 umount $mntpoint || sleep 1 72done 73gjournal stop md$mdstart 74gjournal unload 75mdconfig -d -u $mdstart 76