svn commit: r245300 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Fri Jan 11 13:58:53 2013
New Revision: 245300
URL: http://svnweb.freebsd.org/changeset/base/245300

Log:
  Parallel mount and unmount of the same mount point.

Added:
  user/pho/stress2/misc/parallelmount.sh   (contents, props changed)

Added: user/pho/stress2/misc/parallelmount.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/parallelmount.sh	Fri Jan 11 13:58:53 2013	(r245300)
@@ -0,0 +1,71 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2012 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.
+#
+# $FreeBSD$
+#
+
+# Parallel mount and unmount of the same mount point
+# http://people.freebsd.org/~pho/stress/log/parallelumount3.txt
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+parallel=40
+
+if [ $# -eq 0 ]; then
+	mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
+	mdconfig -a -t swap -s 10m -u $mdstart || exit 1
+	bsdlabel -w md$mdstart auto
+	newfs -U md${mdstart}$part > /dev/null
+
+	# start the parallel tests
+	for i in `jot $parallel`; do
+		./$0 $i &
+	done
+
+	while kill -0 $! 2> /dev/null; do
+		for i in `jot 200`; do
+			find $mntpoint > /dev/null 2>&1
+		done
+	done
+
+	for i in `jot $parallel`; do
+		wait
+	done
+
+	while mount | grep $mntpoint | grep -q /dev/md; do
+		umount $mntpoint || sleep 1
+	done
+	mdconfig -d -u $mdstart
+else
+	for i in `jot 1000`; do
+		mount /dev/md${mdstart}$part $mntpoint > /dev/null 2>&1
+		umount $mntpoint > /dev/null 2>&1
+		mount > /dev/null
+	done
+fi