1#!/bin/sh 2 3# 4# Copyright (c) 2008-2013 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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 30 31. ../default.cfg 32 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. 36 37# Threads stuck in newbuf: 38# https://people.freebsd.org/~pho/stress/log/newfs4-2.txt 39 40odir=`pwd` 41cd /tmp 42sed '1,/^EOF/d' < $odir/$0 > newfs4.c 43mycc -o newfs4 -Wall -Wextra newfs4.c || exit 1 44rm -f newfs4.c 45cd $odir 46 47mount | grep "$mntpoint" | grep -q md$mdstart && umount $mntpoint 48mdconfig -l | grep md$mdstart > /dev/null && mdconfig -d -u $mdstart 49 50size=9 # Gb 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 54trap "rm -f $diskimage" EXIT INT 55dd if=/dev/zero of=$diskimage bs=1m count=$((size * 1024)) status=none || 56 exit 1 57 58blocksize="-b 65536" 59opt="-O2 -U" 60mdconfig -a -t vnode -f $diskimage -u $mdstart 61newfs $blocksize $opt md$mdstart > /dev/null 62mount /dev/md$mdstart $mntpoint 63 64cd $mntpoint 65truncate -s 2g f1 66truncate -s 2g f2 67truncate -s 2g f3 68truncate -s 2g f4 69/tmp/newfs4 f1 & 70/tmp/newfs4 f2 & 71/tmp/newfs4 f3 & 72/tmp/newfs4 f4 & 73wait 74 75while mount | grep "$mntpoint" | grep -q md$mdstart; do 76 umount -f $mntpoint || sleep 1 77done 78checkfs /dev/md$mdstart; s=$? 79 80mdconfig -d -u $mdstart 81rm -f /tmp/newfs4 82exit $s 83 84EOF 85#include <sys/types.h> 86#include <sys/stat.h> 87 88#include <err.h> 89#include <fcntl.h> 90#include <stdio.h> 91#include <stdlib.h> 92#include <unistd.h> 93 94/* Perform random IO operations on a file */ 95 96int 97main(int argc, char **argv) 98{ 99 struct stat sb; 100 off_t bp, maxb; 101 long i; 102 int fd; 103 char buf[256]; 104 105 if (argc != 2) { 106 fprintf(stderr, "Usage %s: file\n", argv[0]); 107 return (1); 108 } 109 if ((fd = open(argv[1], O_RDWR)) == -1) 110 err(1, "open(%s)", argv[1]); 111 if (fstat(fd, &sb) == -1) 112 err(1, "fstatf(stdin)"); 113 maxb = sb.st_size - sizeof(buf); 114 115 for (i = 0; i < 10000; i++) { 116 bp = arc4random(); 117 bp = (bp << 31 | arc4random()) % maxb; 118 119 if (lseek(fd, bp, 0) == -1) 120 err(1, "lseek()"); 121 if (write(fd, buf, sizeof(buf)) != sizeof(buf)) 122 err(1, "write()"); 123 } 124 close(fd); 125 126 return (0); 127} 128