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154 lines
3.7 KiB
Bash
Executable file
154 lines
3.7 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2009 Peter Holm <pho@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Test scenario with a 20G files on two UFS2 FSs with 64k/64k
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# Test program will hang (deadlock) in "nbufkv"
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# Test scenario by John-Mark Gurney <jmg at funkthat dot com>
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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dir=`dirname $diskimage`
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d1=$dir/diskimage1
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d2=$dir/diskimage2
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rm -f $d1 $d2
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size=20 # G
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avail=$((`sysctl -n hw.physmem` / 1024 / 1024 / 1024))
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[ $((size * 2)) -gt $avail ] && size=$((avail / 2))
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[ `df -k $dir | tail -1 | awk '{print $4}'` -lt \
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$((size * 2 * 1024 * 1024)) ] &&
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echo "Not enough disk space on $dir." && exit 0
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odir=`pwd`
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USE_TIMEOUT=1
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cd /tmp
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sed '1,/^EOF/d' < $odir/$0 > nbufkv.c
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mycc -o nbufkv -Wall nbufkv.c
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rm -f nbufkv.c
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cd $odir
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u1=$mdstart
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u2=$((u1 + 1))
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mp1=$mntpoint
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mp2=${mntpoint}2
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[ -d $mp1 ] || mkdir $mp1
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[ -d $mp2 ] || mkdir $mp2
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dd if=/dev/zero of=$d1 bs=1m count=${size}k status=none || exit 1
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cp $d1 $d2 || exit 1
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mount | grep -q /dev/md$u2 && umount -f /dev/md$u2
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mount | grep -q /dev/md$u1 && umount -f /dev/md$u1
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[ -c /dev/md$u2 ] && mdconfig -d -u $u2
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[ -c /dev/md$u1 ] && mdconfig -d -u $u1
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mdconfig -a -t vnode -f $d1 -u $u1 || exit 1
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newfs -b 65536 -f 65536 -O2 md$u1 > /dev/null
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mdconfig -a -t vnode -f $d2 -u $u2 || exit 1
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newfs -b 65536 -f 65536 -O2 md$u2 > /dev/null
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mount /dev/md$u1 $mp1
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mount /dev/md$u2 $mp2
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/tmp/nbufkv $mp1 &
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/tmp/nbufkv $mp2 &
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wait
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umount /dev/md$u2
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umount /dev/md$u1
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mount | grep -q /dev/md$u2 && umount -f /dev/md$u2
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mount | grep -q /dev/md$u1 && umount -f /dev/md$u1
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mdconfig -d -u $u2
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mdconfig -d -u $u1
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rm -rf $d1 $d2 /tmp/nbufkv
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exit
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EOF
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#include <sys/param.h>
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#include <err.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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void
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handler(int i) {
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fprintf(stderr, "FAIL. Timerout.\n");
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_exit(0);
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}
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void
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work(int fd, size_t n)
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{
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int i;
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for (i = 0; i < 128 * 1024; i++) {
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n = n - PAGE_SIZE;
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if (lseek(fd, n , SEEK_SET) == -1)
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err(1, "lseek()");
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if (write(fd, "1", 1) != 1)
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err(1, "write()");
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}
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}
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int
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main(int argc, char **argv)
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{
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int fd;
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off_t len;
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char path[128];
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len = 20;
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len = len * 1024 * 1024 * 1024;
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sprintf(path, "%s/nbufkv.%06d", argv[1], getpid());
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if ((fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0640)) == -1)
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err(1,"open(%s)", path);
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if (ftruncate(fd, len) == -1)
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err(1, "ftruncate");
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signal(SIGALRM, handler);
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alarm(1200);
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work(fd, len);
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close(fd);
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if (unlink(path) == -1)
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err(1, "unlink(%s)", path);
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return (0);
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}
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