1#!/bin/sh 2 3# 4# Copyright (c) 2015 EMC Corp. 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# Out of swap seen with no swap disk: 30# dd 'if=/dev/zero' 'of=/var/tmp/diskimage.1' 'bs=1m' 'count=3427' 31# pid 598 (ntpd), uid 0, was killed: out of swap space 32# pid 656 (sendmail), uid 0, was killed: out of swap space 33# pid 659 (sendmail), uid 25, was killed: out of swap space 34# https://people.freebsd.org/~pho/stress/log/alan020.txt 35 36# Deadlock seen: 37# https://people.freebsd.org/~pho/stress/log/kostik845.txt 38# Fixed by r290920. 39 40. ../default.cfg 41 42[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 43[ `sysctl -n hw.physmem` -gt $(( 8 * 1024 * 1024 * 1024)) ] && exit 0 44[ `swapinfo | wc -l` -eq 1 ] || { swapoff -a; off=1; } 45size=$((`sysctl -n hw.physmem` / 1024 / 1024)) 46need=$((size * 2)) 47d1=$diskimage.1 48d2=$diskimage.2 49rm -f $d1 $d2 || exit 1 50[ `df -k $(dirname $diskimage) | tail -1 | awk '{print int($4 / 1024)}'` \ 51 -lt $need ] && 52 printf "Need %d MB on %s.\n" $need `dirname $diskimage` && exit 0 53trap "rm -f $d1 $d2" EXIT INT 54dd if=/dev/zero of=$d1 bs=1m count=$size status=none 55cp $d1 $d2 56[ $off ] && swapon -a 57