73 lines
2.4 KiB
Bash
Executable File
73 lines
2.4 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# Stress test by performing parallel calls to mount and umount. Alternate
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# between forced and non-forced unmounts.
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# https://people.freebsd.org/~pho/stress/log/kostik169.txt
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# https://people.freebsd.org/~pho/stress/log/kostik487.txt
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[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
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. ../default.cfg
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mounts=15 # Number of parallel scripts
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: ${nullfs_srcdir:=/tmp}
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: ${nullfs_dstdir:=$mntpoint}
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if [ $# -eq 0 ]; then
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for i in `jot $mounts`; do
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[ ! -d ${nullfs_dstdir}$i ] && mkdir ${nullfs_dstdir}$i
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mount | grep -q " ${nullfs_dstdir}$i " &&
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umount ${nullfs_dstdir}$i
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done
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# start the parallel tests
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for i in `jot $mounts`; do
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./$0 $i &
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done
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wait
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for i in `jot $mounts`; do
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umount ${nullfs_dstdir}$i > /dev/null 2>&1
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done
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exit 0
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else
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# The test: Parallel mount and unmounts
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start=`date '+%s'`
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while [ `date '+%s'` -lt $((start + 300)) ]; do
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m=$1
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mount_nullfs $nullfs_srcdir ${nullfs_dstdir}$m > \
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/dev/null 2>&1
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opt=`[ $(( m % 2 )) -eq 0 ] && echo -f`
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while mount | grep -q ${nullfs_dstdir}$m; do
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umount $opt ${nullfs_dstdir}$m > /dev/null 2>&1
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done
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done
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fi
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