Date: Mon, 22 Feb 2010 07:50:17 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r204194 - projects/stress2/misc Message-ID: <201002220750.o1M7oHfT080330@svn.freebsd.org>
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Author: pho Date: Mon Feb 22 07:50:17 2010 New Revision: 204194 URL: http://svn.freebsd.org/changeset/base/204194 Log: Test overcommit of the file system capacity. Added: projects/stress2/misc/mmap4.sh (contents, props changed) Added: projects/stress2/misc/mmap4.sh ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ projects/stress2/misc/mmap4.sh Mon Feb 22 07:50:17 2010 (r204194) @@ -0,0 +1,118 @@ +#!/bin/sh + +# +# Copyright (c) 2010 Peter Holm <pho@FreeBSD.org> +# 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. +# +# $FreeBSD$ +# + +# Test overcommit of the file system capacity +# Causes panic: 1 vncache entries remaining + +# Scanario by kib@ + +[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 + +. ../default.cfg + +here=`pwd` +cd /tmp +sed '1,/^EOF/d' < $here/$0 > mmap4.c +cc -o mmap4 -Wall -O2 mmap4.c +rm -f mmap4.c + +mount | grep -q "$mntpoint" && umount $mntpoint +mdconfig -l | grep -q $mdstart && mdconfig -d -u $mdstart + +mdconfig -a -t swap -s 40m -u $mdstart +bsdlabel -w md${mdstart} auto + +newfs -U md${mdstart}${part} > /dev/null +mount /dev/md${mdstart}${part} $mntpoint + +/tmp/mmap4 /$mntpoint/file +ls -lh $mntpoint +df -h + +cd $here +rm -f /tmp/mmap4 + +while mount | grep -q $mntpoint; do + sync;sync;sync + sleep 1 + umount $mntpoint +done + +mdconfig -d -u $mdstart +exit 0 +EOF +#include <sys/types.h> +#include <err.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/mman.h> +#include <sys/param.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> + +#define STARTADDR 0x0U +#define ADRSPACE 0x06400000U /* 100 Mb */ + +int +main(int argc, char **argv) +{ + int fd, ps; + void *p; + size_t len; + char *c, *path; + + p = (void *)STARTADDR; + len = ADRSPACE; + + path = argv[1]; + if ((fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0622)) == -1) + err(1,"open()"); + if (ftruncate(fd, len) == -1) + err(1, "ftruncate"); + if ((p = mmap(p, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) == + MAP_FAILED) { + if (errno == ENOMEM) + return (1); + err(1, "mmap(1)"); + } + + c = p; + ps = getpagesize(); + for (c = p; (void *)c < p + len; c += ps) { + *c = 1; + } + + close(fd); + + return (0); +}
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