Date: Wed, 7 Aug 2013 12:03:34 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r254060 - user/pho/stress2/misc Message-ID: <201308071203.r77C3YHW088591@svn.freebsd.org>
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Author: pho Date: Wed Aug 7 12:03:34 2013 New Revision: 254060 URL: http://svnweb.freebsd.org/changeset/base/254060 Log: Added regression test for rename(2) problem. Sponsored by: EMC / Isilon storage division Added: user/pho/stress2/misc/rename10.sh (contents, props changed) Added: user/pho/stress2/misc/rename10.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ user/pho/stress2/misc/rename10.sh Wed Aug 7 12:03:34 2013 (r254060) @@ -0,0 +1,184 @@ +#!/bin/sh + +# +# Copyright (c) 2013 EMC Corp. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +# Regression test for rename(2) problem with missing reference release of +# a busy "to" vnode, resulting in a leak. +# Fixed in r253998l + +. ../default.cfg + +here=`pwd` +cd /tmp +sed '1,/^EOF/d' < $here/$0 > rename10.c +cc -o rename10 -Wall -Wextra -g -O2 rename10.c || exit 1 +rm -f rename10.c +cd $here + +mount | grep $mntpoint | grep -q tmpfs && umount -f $mntpoint +mount -t tmpfs tmpfs $mntpoint + +mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint +mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart + +mdconfig -a -t swap -s 4g -u $mdstart || exit 1 +bsdlabel -w md$mdstart auto +newfs -U md${mdstart}$part > /dev/null +mount /dev/md${mdstart}$part $mntpoint +avail=`df -k $mntpoint | tail -1 | awk '{print $4}'` + +(cd $mntpoint; /tmp/rename10) + +for i in `jot 3`; do + sync + sleep 2 +done + +if [ `df -k $mntpoint | tail -1 | awk '{print $4}'` -lt $avail ]; then + echo FAIL + ls -ial $mntpoint + df -i $mntpoint +fi + +n=0 +while mount | grep "on $mntpoint " | grep -q /dev/md; do + umount $mntpoint || sleep 1 + n=$((n + 1)) + [ $n -gt 5 ] && { umount -f $mntpoint; break; } +done + +checkfs /dev/md${mdstart}$part +mdconfig -d -u $mdstart +exit 0 +EOF +#include <err.h> +#include <fcntl.h> +#include <pthread.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> + +#define PARALLEL 4 +#define SIZE (1 * 1024 * 1024) + +static char *logfile = "logfile"; +static char *oldfiles[] = { + "logfile.0", "logfile.1", "logfile.2", "logfile.3", "logfile.4" +}; + +void * +logger(void) +{ + int fd; + char * cp; + + setproctitle("logger"); + cp = calloc(1, SIZE); + for(;;) { + if ((fd = open(logfile, O_RDWR | O_APPEND)) != -1) { + if (write(fd, cp, SIZE) != SIZE) + err(1, "write()"); + close(fd); + } + usleep(1); + } + + _exit(0); +} + +void * +spin(void) +{ + int fd, i; + + setproctitle("spin"); + for(;;) { + for (i = 0; i < 5; i++) { + if ((fd = open(oldfiles[i], O_RDWR | O_APPEND)) != -1) + close(fd); + } + usleep(1); + } + _exit(0); +} + +void +renamer() +{ + int fd, i; + time_t start; + + setproctitle("renamer"); + start = time(NULL); + i = 0; + while (time(NULL) - start < 60) { + if ((fd = open(logfile, O_RDWR | O_CREAT | O_EXCL, 0644)) == -1) + err(1, "creat(%s)", logfile); + close(fd); + if (rename(logfile, oldfiles[i]) == -1) + err(1, "rename(%s, %s)", logfile, oldfiles[i]); + i = (i + 1) % 5; + } + for (i = 0; i < 5; i++) { + unlink(oldfiles[i]); + } + unlink(logfile); + +} + +int +main() { + pid_t pids[PARALLEL], spids[PARALLEL]; + int i; + + for (i = 0; i < PARALLEL; i++) { + if ((pids[i] = fork()) == 0) + logger(); + if ((spids[i] = fork()) == 0) + spin(); + } + + renamer(); + + for (i = 0; i < PARALLEL; i++) { + kill(pids[i], SIGINT); + kill(spids[i], SIGINT); + } + for (i = 0; i < PARALLEL * 2; i++) + wait(NULL); + wait(NULL); + + return (0); +}
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