1# $FreeBSD$ 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# $FreeBSD$ 29# 30 31# test recursive flushes in bdwrite(). 32 33[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 34 35snap() { 36 for i in `jot 5`; do 37 mksnap_ffs $1 $2 38 [ $? -eq 0 ] && break 39 done 40} 41 42old=`sysctl vfs.recursiveflushes | awk '{print $NF}'` 43cd /var/tmp 44rm -f /var/.snap/pho.* 45trap "rm -f /var/.snap/pho.*" 0 46snap /var /var/.snap/pho.1 47snap /var /var/.snap/pho.2 48snap /var /var/.snap/pho.3 49snap /var /var/.snap/pho.4 50snap /var /var/.snap/pho.5 51 52for i in `jot 32`; do 53 # Create 32 Mb files 54 dd if=/dev/zero of=big.$i bs=16k count=2048 2>&1 | egrep -v "records|transferred"& 55done 56for i in `jot 32`; do 57 wait 58done 59for i in `jot 32`; do 60 rm -f big.$i 61done 62 63rm -f /var/.snap/pho.* 64new=`sysctl vfs.recursiveflushes | awk '{print $NF}'` 65[ $old != $new ] && echo "vfs.recursiveflushes changed from $old to $new" 66