1#!/bin/sh 2 3# 4# Copyright (c) 2016 EMC Corp. 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# Variation of truncate3.sh. 30# No problems seen. 31 32[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 33 34. ../default.cfg 35 36mount | grep -q "$mntpoint" && umount $mntpoint 37mdconfig -l | grep -q $mdstart && mdconfig -d -u $mdstart 38 39mdconfig -a -t swap -s 400m -u $mdstart 40bsdlabel -w md$mdstart auto 41 42if [ `jot -r 1 0 1` -eq 0 ]; then 43 newfs $newfs_flags md${mdstart}$part > /dev/null 44else 45 newfs md${mdstart}$part > /dev/null 46fi 47mount /dev/md${mdstart}$part $mntpoint 48export RUNDIR=$mntpoint/stressX 49 50here=`pwd` 51cd /tmp 52sed '1,/^EOF/d' < $here/$0 > truncate7.c 53mycc -o truncate7 -Wall -O2 truncate7.c 54rm -f truncate7.c 55[ -d $RUNDIR ] || mkdir -p $RUNDIR 56cd $RUNDIR 57 58/tmp/truncate7 59 60cd $here 61rm -f /tmp/truncate7 62 63sync;sync;sync 64while mount | grep -q $mntpoint; do 65 sync;sync;sync 66 sleep 1 67 umount $mntpoint 68done 69 70checkfs /dev/md${mdstart}$part; s=$? 71mdconfig -d -u $mdstart 72exit $s 73EOF 74#include <fcntl.h> 75#include <err.h> 76#include <stdio.h> 77#include <stdlib.h> 78#include <unistd.h> 79#include <sys/wait.h> 80 81#define SIZ 512 82char buf[SIZ]; 83 84void 85test(void) 86{ 87 int fd[10], i, j; 88 char name[128]; 89 off_t len; 90 91 for (j = 0; j < 10; j++) { 92 sprintf(name, "%05d.%05d", getpid(), j); 93 fd[j] = open(name, O_WRONLY | O_CREAT | O_APPEND, 0666); 94 if (fd[j] == -1) 95 err(1, "open(%s)", name); 96 unlink(name); 97 } 98 99 for (i = 0; i < 100; i++) { 100 for (j = 0; j < 10; j++) { 101 if (write(fd[j], buf, 2) != 2) 102 err(1, "write"); 103 len = arc4random() % (1024 * 1024); 104 if (ftruncate(fd[j], len) == -1) 105 err(1, "ftruncate"); 106 } 107 } 108 109 exit(0); 110} 111int 112main(int argc, char **argv) 113{ 114 int i, status; 115 116 for (i = 0; i < 20; i++) { 117 if (fork() == 0) 118 test(); 119 } 120 for (i = 0; i < 20; i++) 121 wait(&status); 122 123 return (0); 124} 125