4 # Copyright (c) 2008-2013 Peter Holm <pho@FreeBSD.org>
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
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.
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
29 [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
33 # Deadlock problems. Test scenario by Lev Serebryakov <lev@freebsd.org>
34 # newfs -O2 -U -b 65536
35 # The io programs will get stuck in nbufkv wait state.
37 # Threads stuck in newbuf:
38 # https://people.freebsd.org/~pho/stress/log/newfs4-2.txt
42 sed '1,/^EOF/d' < $odir/$0 > newfs4.c
43 mycc -o newfs4 -Wall -Wextra newfs4.c || exit 1
47 mount | grep "$mntpoint" | grep -q md${mdstart}$part && umount $mntpoint
48 mdconfig -l | grep md$mdstart > /dev/null && mdconfig -d -u $mdstart
51 [ `df -k $(dirname $diskimage) | tail -1 | \
52 awk '{print $4}'` -lt $((size * 1024 * 1024)) ] && \
53 echo "Not enough disk space on `dirname $diskimage`." && exit 1
54 trap "rm -f $diskimage" EXIT INT
55 dd if=/dev/zero of=$diskimage bs=1m count=$((size * 1024)) status=none ||
60 mdconfig -a -t vnode -f $diskimage -u $mdstart
61 bsdlabel -w md$mdstart auto
62 newfs $blocksize $opt md${mdstart}$part > /dev/null
63 mount /dev/md${mdstart}$part $mntpoint
76 while mount | grep "$mntpoint" | grep -q md${mdstart}$part; do
77 umount -f $mntpoint || sleep 1
79 checkfs /dev/md${mdstart}$part; s=$?
81 mdconfig -d -u $mdstart
86 #include <sys/types.h>
95 /* Perform random IO operations on a file */
98 main(int argc, char **argv)
107 fprintf(stderr, "Usage %s: file\n", argv[0]);
110 if ((fd = open(argv[1], O_RDWR)) == -1)
111 err(1, "open(%s)", argv[1]);
112 if (fstat(fd, &sb) == -1)
113 err(1, "fstatf(stdin)");
114 maxb = sb.st_size - sizeof(buf);
116 for (i = 0; i < 10000; i++) {
118 bp = (bp << 31 | arc4random()) % maxb;
120 if (lseek(fd, bp, 0) == -1)
122 if (write(fd, buf, sizeof(buf)) != sizeof(buf))