svn commit: r189441 - projects/stress2/misc

[Peter Holm]

Author: pho
Date: Fri Mar  6 10:44:11 2009
New Revision: 189441
URL: http://svn.freebsd.org/changeset/base/189441

Log:
  Deadlock test scenario involving two UFS2 file systems using a 64k block
  size.

Added:
  projects/stress2/misc/nbufkv.sh   (contents, props changed)

Added: projects/stress2/misc/nbufkv.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ projects/stress2/misc/nbufkv.sh	Fri Mar  6 10:44:11 2009	(r189441)
@@ -0,0 +1,136 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2009 Peter Holm <pho at 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 scenario with a 20G files on two UFS2 FSs with 64k/64k
+# Test program will hang (deadlock) in "nbufkv"
+
+# Test scenario by John-Mark Gurney <jmg at funkthat dot com>
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+odir=`pwd`
+
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > nbufkv.c
+cc -o nbufkv -Wall nbufkv.c
+rm -f nbufkv.c
+cd $odir
+
+u1=$mdstart
+u2=$((u1 + 1))
+d1=/tmp/diskimage1
+d2=/tmp/diskimage2
+[ -d mp1 ] || mkdir mp1
+[ -d mp2 ] || mkdir mp2
+truncate -s 20g $d1
+truncate -s 20g $d2
+
+mount | grep -q /dev/md${u2}$part && umount -f /dev/md${u2}$part
+mount | grep -q /dev/md${u1}$part && umount -f /dev/md${u1}$part
+mdconfig -l | grep -q md${u2} && mdconfig -d -u $u2
+mdconfig -l | grep -q md${u1} && mdconfig -d -u $u1
+
+mdconfig -a -t vnode -f $d1 -u $u1
+bsdlabel -w md$u1 auto
+newfs -b 65536 -f 65536 -O2 md${u1}${part} > /dev/null
+
+mdconfig -a -t vnode -f $d2 -u $u2
+bsdlabel -w md$u2 auto
+newfs -b 65536 -f 65536 -O2 md${u2}${part} > /dev/null
+
+mount /dev/md${u1}$part mp1
+mount /dev/md${u2}$part mp2
+
+/tmp/nbufkv `pwd`/mp1 &
+/tmp/nbufkv `pwd`/mp2 &
+wait;wait
+
+umount /dev/md${u2}$part
+umount /dev/md${u1}$part
+
+mount | grep -q /dev/md${u2}$part && umount -f /dev/md${u2}$part
+mount | grep -q /dev/md${u1}$part && umount -f /dev/md${u1}$part
+
+mdconfig -d -u $u2
+mdconfig -d -u $u1
+
+rm -rf mp1 mp2 $d1 $d2 /tmp/nbufkv
+exit
+EOF
+#include <sys/types.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/param.h>
+
+void
+work(int fd, size_t n)
+{
+	int i;
+
+	for (i = 0; i < 128 * 1024; i++) {
+		n = n - PAGE_SIZE;
+		if (lseek(fd, n , SEEK_SET) == -1)
+			err(1, "lseek()");
+		if (write(fd, "1", 1) != 1)
+			err(1, "write()");
+	}
+
+}
+
+int
+main(int argc, char **argv)
+{
+
+	int fd;
+	off_t len;
+	char path[128];
+
+	len = 20;
+	len = len * 1024 * 1024 * 1024;
+
+	sprintf(path, "%s/nbufkv.%06d", argv[1], getpid());
+	if ((fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0640)) == -1)
+		err(1,"open()");
+	if (ftruncate(fd, len) == -1)
+		err(1, "ftruncate");
+
+	work(fd, len);
+
+	close(fd);
+	if (unlink(path) == -1)
+		err(1, "unlink(%s)", path);
+
+	return (0);
+}