1#!/bin/sh
2
3#
4# Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
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# Test recursive flushes in bdwrite().
30
31[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
32
33. ../default.cfg
34
35snap() {
36   for i in `jot 5`; do
37      mksnap_ffs $1 $2
38      [ $? -eq 0 ] && break
39   done
40}
41
42mount | grep $mntpoint | grep -q /dev/md && umount -f $mntpoint
43mdconfig -l | grep -q md$mdstart &&  mdconfig -d -u $mdstart
44mdconfig -a -t swap -s 4g -u $mdstart || exit 1
45newfs $newfs_flags md$mdstart > /dev/null
46mount /dev/md$mdstart $mntpoint
47
48old=`sysctl vfs.recursiveflushes | awk '{print $NF}'`
49cd $mntpoint
50rm -f $mntpoint/.snap/stress2.*
51snap $mntpoint $mntpoint/.snap/stress2.1
52snap $mntpoint $mntpoint/.snap/stress2.2
53snap $mntpoint $mntpoint/.snap/stress2.3
54snap $mntpoint $mntpoint/.snap/stress2.4
55snap $mntpoint $mntpoint/.snap/stress2.5
56
57for i in `jot 32`; do
58   # Create 32 Mb files
59   dd if=/dev/zero of=big.$i bs=16k count=2048 status=none
60done
61wait
62for i in `jot 32`; do
63   rm -f big.$i
64done
65
66rm -f $mntpoint/.snap/stress2.*
67new=`sysctl vfs.recursiveflushes | awk '{print $NF}'`
68[ $old != $new ] && echo "vfs.recursiveflushes changed from $old to $new"
69
70cd /
71while mount | grep $mntpoint | grep -q /dev/md; do
72	umount $mntpoint || sleep 1
73done
74mdconfig -d -u $mdstart
75