1#!/bin/sh 2 3# 4# Copyright (c) 2016 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# "panic: Lock Per-Filesystem Softdep Lock not exclusively locked @ 30# ../../../ufs/ffs/ffs_softdep.c:1950" seen. 31# https://people.freebsd.org/~pho/stress/log/trim7.txt 32# Fixed by: r297206. 33 34# Test scenario by: Nick Evans <nevans@talkpoint.com> 35 36[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 37 38mount | grep -q /media || 39 echo "Prerequisite: /media is a TRIM enabled file system." 40 41r=`mount | grep -w soft-updates | awk '{print $1}' | while read dev; do 42 dumpfs $dev | grep -m1 flags | grep -qw trim || continue 43 df -k $dev 44done | sort -rn +3 | head -1 | awk '{print $4, $6}'` 45[ -z "$r" ] && exit # No trim enabled file systems found 46set $r 47free=$(($1 / 1024 / 10 * 9)) # in Mb 48max=$((128 * 1024)) # Max is 128 GB 49[ $free -gt $max ] && free=$max 50mp=$2 51[ $mp = /media ] || exit 0 52fs=`mount | grep "on $mp " | sed 's/ .*//'` 53echo "Using $fs" 54image=`echo $mp/diskimage | sed s#//#/#` # fix "//" for case mp = "/" 55 56echo "dd if=/dev/zero of=$image bs=1m count=$free" 57dd if=/dev/zero of=$image bs=1m count=$free status=none 58rm $image 59while mount | grep -q "on $mp "; do 60 umount $mp 61done 62mount $fs $mp 63