Date: Fri, 6 Mar 2009 10:44:11 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r189441 - projects/stress2/misc Message-ID: <200903061044.n26AiBwb016878@svn.freebsd.org>
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Author: pho Date: Fri Mar 6 10:44:11 2009 New Revision: 189441 URL: http://svn.freebsd.org/changeset/base/189441 Log: Deadlock test scenario involving two UFS2 file systems using a 64k block size. Added: projects/stress2/misc/nbufkv.sh (contents, props changed) Added: projects/stress2/misc/nbufkv.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ projects/stress2/misc/nbufkv.sh Fri Mar 6 10:44:11 2009 (r189441) @@ -0,0 +1,136 @@ +#!/bin/sh + +# +# Copyright (c) 2009 Peter Holm <pho@FreeBSD.org> +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +# Test scenario with a 20G files on two UFS2 FSs with 64k/64k +# Test program will hang (deadlock) in "nbufkv" + +# Test scenario by John-Mark Gurney <jmg at funkthat dot com> + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg + +odir=`pwd` + +cd /tmp +sed '1,/^EOF/d' < $odir/$0 > nbufkv.c +cc -o nbufkv -Wall nbufkv.c +rm -f nbufkv.c +cd $odir + +u1=$mdstart +u2=$((u1 + 1)) +d1=/tmp/diskimage1 +d2=/tmp/diskimage2 +[ -d mp1 ] || mkdir mp1 +[ -d mp2 ] || mkdir mp2 +truncate -s 20g $d1 +truncate -s 20g $d2 + +mount | grep -q /dev/md${u2}$part && umount -f /dev/md${u2}$part +mount | grep -q /dev/md${u1}$part && umount -f /dev/md${u1}$part +mdconfig -l | grep -q md${u2} && mdconfig -d -u $u2 +mdconfig -l | grep -q md${u1} && mdconfig -d -u $u1 + +mdconfig -a -t vnode -f $d1 -u $u1 +bsdlabel -w md$u1 auto +newfs -b 65536 -f 65536 -O2 md${u1}${part} > /dev/null + +mdconfig -a -t vnode -f $d2 -u $u2 +bsdlabel -w md$u2 auto +newfs -b 65536 -f 65536 -O2 md${u2}${part} > /dev/null + +mount /dev/md${u1}$part mp1 +mount /dev/md${u2}$part mp2 + +/tmp/nbufkv `pwd`/mp1 & +/tmp/nbufkv `pwd`/mp2 & +wait;wait + +umount /dev/md${u2}$part +umount /dev/md${u1}$part + +mount | grep -q /dev/md${u2}$part && umount -f /dev/md${u2}$part +mount | grep -q /dev/md${u1}$part && umount -f /dev/md${u1}$part + +mdconfig -d -u $u2 +mdconfig -d -u $u1 + +rm -rf mp1 mp2 $d1 $d2 /tmp/nbufkv +exit +EOF +#include <sys/types.h> +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/param.h> + +void +work(int fd, size_t n) +{ + int i; + + for (i = 0; i < 128 * 1024; i++) { + n = n - PAGE_SIZE; + if (lseek(fd, n , SEEK_SET) == -1) + err(1, "lseek()"); + if (write(fd, "1", 1) != 1) + err(1, "write()"); + } + +} + +int +main(int argc, char **argv) +{ + + int fd; + off_t len; + char path[128]; + + len = 20; + len = len * 1024 * 1024 * 1024; + + sprintf(path, "%s/nbufkv.%06d", argv[1], getpid()); + if ((fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0640)) == -1) + err(1,"open()"); + if (ftruncate(fd, len) == -1) + err(1, "ftruncate"); + + work(fd, len); + + close(fd); + if (unlink(path) == -1) + err(1, "unlink(%s)", path); + + return (0); +}
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