1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 5# 6# Copyright (c) 2018 Dell EMC Isilon 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following conditions 10# are met: 11# 1. Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# 2. Redistributions in binary form must reproduce the above copyright 14# notice, this list of conditions and the following disclaimer in the 15# documentation and/or other materials provided with the distribution. 16# 17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27# SUCH DAMAGE. 28# 29 30# Write a large file to a tmpfs FS 31# Test scenario suggestion by kib@ 32 33# Thread stuck in vmwait seen: 34# https://people.freebsd.org/~pho/stress/log/jeff138.txt 35# Fixed by r355771 36 37. ../default.cfg 38[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 39size=`sysctl -n hw.usermem` 40 41mount | grep "on $mntpoint " && umount -f $mntpoint 42mount -o size=$size -t tmpfs tmpfs $mntpoint 43 44size=$((size / 1024 / 1024)) 45size=$((size - 5)) 46echo "dd if=/dev/zero of=$mntpoint/file bs=1m count=$size" 47dd if=/dev/zero of=$mntpoint/file bs=1m count=$size status=none 48timeout 1m find `dirname $diskimage` -ls > /dev/null 2>&1 49 50for i in `jot 6`; do 51 mount | grep -q "on $mntpoint " || break 52 umount $mntpoint && break || sleep 10 53 [ $i -eq 6 ] && 54 { echo FATAL; fstat -mf $mntpoint; exit 1; } 55done 56exit 0 57