117 lines
3.0 KiB
Bash
Executable File
117 lines
3.0 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2013 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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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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# Variation of newfs4.sh, using a swap backed MD disk
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odir=`pwd`
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cd /tmp
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sed '1,/^EOF/d' < $odir/$0 > newfs5.c
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mycc -o newfs5 -Wall -Wextra newfs5.c
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rm -f newfs5.c
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cd $odir
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mount | grep "$mntpoint" | grep md${mdstart}$part > /dev/null && umount $mntpoint
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mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
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blocksize="-b 65536"
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opt="-O2 -U"
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size=9 # Gb
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mdconfig -a -t swap -s ${size}g -u $mdstart
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bsdlabel -w md$mdstart auto
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newfs $blocksize $opt md${mdstart}$part > /dev/null
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mount /dev/md${mdstart}$part $mntpoint
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cd $mntpoint
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truncate -s 2g f1
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truncate -s 2g f2
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truncate -s 2g f3
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truncate -s 2g f4
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/tmp/newfs5 f1 &
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/tmp/newfs5 f2 &
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/tmp/newfs5 f3 &
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/tmp/newfs5 f4 &
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wait
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while mount | grep "$mntpoint" | grep -q md${mdstart}$part; do
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umount -f $mntpoint || sleep 1
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done
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checkfs /dev/md${mdstart}$part; s=$?
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mdconfig -d -u $mdstart
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rm -f $diskimage
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rm -f /tmp/newfs5
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exit $s
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EOF
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <fcntl.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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/* Perform random IO operations on a file */
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int
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main(int argc, char **argv)
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{
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struct stat sb;
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char buf[256];
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off_t bp, maxb;
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int fd;
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long i;
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if (argc != 2) {
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fprintf(stderr, "Usage %s: file\n", argv[0]);
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return (1);
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}
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if ((fd = open(argv[1], O_RDWR)) == -1)
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err(1, "open(%s)", argv[1]);
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if (fstat(fd, &sb) == -1)
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err(1, "fstatf(stdin)");
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maxb = sb.st_size - sizeof(buf);
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for (i = 0; i < 10000; i++) {
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bp = arc4random();
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bp = (bp << 31 | arc4random()) % maxb;
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if (lseek(fd, bp, 0) == -1)
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err(1, "lseek()");
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if (write(fd, buf, sizeof(buf)) != sizeof(buf))
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err(1, "write()");
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}
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close(fd);
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return (0);
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}
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