1#!/bin/sh 2 3# 4# Copyright (c) 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# Variation of newfs4.sh, using a swap backed MD disk 34 35odir=`pwd` 36cd /tmp 37sed '1,/^EOF/d' < $odir/$0 > newfs5.c 38mycc -o newfs5 -Wall -Wextra newfs5.c 39rm -f newfs5.c 40cd $odir 41 42mount | grep "$mntpoint" | grep md${mdstart}$part > /dev/null && umount $mntpoint 43mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart 44 45blocksize="-b 65536" 46opt="-O2 -U" 47size=9 # Gb 48mdconfig -a -t swap -s ${size}g -u $mdstart 49bsdlabel -w md$mdstart auto 50newfs $blocksize $opt md${mdstart}$part > /dev/null 51mount /dev/md${mdstart}$part $mntpoint 52 53cd $mntpoint 54truncate -s 2g f1 55truncate -s 2g f2 56truncate -s 2g f3 57truncate -s 2g f4 58/tmp/newfs5 f1 & 59/tmp/newfs5 f2 & 60/tmp/newfs5 f3 & 61/tmp/newfs5 f4 & 62wait 63 64while mount | grep "$mntpoint" | grep -q md${mdstart}$part; do 65 umount -f $mntpoint || sleep 1 66done 67checkfs /dev/md${mdstart}$part; s=$? 68 69mdconfig -d -u $mdstart 70rm -f $diskimage 71rm -f /tmp/newfs5 72exit $s 73 74EOF 75#include <sys/types.h> 76#include <sys/stat.h> 77#include <err.h> 78#include <fcntl.h> 79#include <stdio.h> 80#include <stdlib.h> 81#include <unistd.h> 82 83/* Perform random IO operations on a file */ 84 85int 86main(int argc, char **argv) 87{ 88 struct stat sb; 89 char buf[256]; 90 off_t bp, maxb; 91 int fd; 92 long i; 93 94 if (argc != 2) { 95 fprintf(stderr, "Usage %s: file\n", argv[0]); 96 return (1); 97 } 98 if ((fd = open(argv[1], O_RDWR)) == -1) 99 err(1, "open(%s)", argv[1]); 100 if (fstat(fd, &sb) == -1) 101 err(1, "fstatf(stdin)"); 102 maxb = sb.st_size - sizeof(buf); 103 104 for (i = 0; i < 10000; i++) { 105 bp = arc4random(); 106 bp = (bp << 31 | arc4random()) % maxb; 107 108 if (lseek(fd, bp, 0) == -1) 109 err(1, "lseek()"); 110 if (write(fd, buf, sizeof(buf)) != sizeof(buf)) 111 err(1, "write()"); 112 } 113 close(fd); 114 115 return (0); 116} 117