18a272653SPeter Holm#!/bin/sh 28a272653SPeter Holm 38a272653SPeter Holm# 48a272653SPeter Holm# Copyright (c) 2015 EMC Corp. 58a272653SPeter Holm# All rights reserved. 68a272653SPeter Holm# 78a272653SPeter Holm# Redistribution and use in source and binary forms, with or without 88a272653SPeter Holm# modification, are permitted provided that the following conditions 98a272653SPeter Holm# are met: 108a272653SPeter Holm# 1. Redistributions of source code must retain the above copyright 118a272653SPeter Holm# notice, this list of conditions and the following disclaimer. 128a272653SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 138a272653SPeter Holm# notice, this list of conditions and the following disclaimer in the 148a272653SPeter Holm# documentation and/or other materials provided with the distribution. 158a272653SPeter Holm# 168a272653SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 178a272653SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 188a272653SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 198a272653SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 208a272653SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 218a272653SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 228a272653SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 238a272653SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 248a272653SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 258a272653SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 268a272653SPeter Holm# SUCH DAMAGE. 278a272653SPeter Holm# 288a272653SPeter Holm 298a272653SPeter Holm# Test scenario for exhausting limited malloc KVA on 32bit machine, by 308a272653SPeter Holm# extending a file on a UFS SU volume. 318a272653SPeter Holm 328a272653SPeter Holm# Create a large file on a file system with trim enabled. 338a272653SPeter Holm# Watchdog timeout seen: 348a272653SPeter Holm# https://people.freebsd.org/~pho/stress/log/trim6.txt 358a272653SPeter Holm# Fixed by r287361. 368a272653SPeter Holm 378a272653SPeter Holm# "panic: negative mnt_ref" seen: 388a272653SPeter Holm# https://people.freebsd.org/~pho/stress/log/kostik835.txt 398a272653SPeter Holm 408a272653SPeter Holm[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 418a272653SPeter Holm 428a272653SPeter Holmr=`mount | grep -w soft-updates | awk '{print $1}' | while read dev; do 438a272653SPeter Holm dumpfs $dev | head -20 | grep -qw trim || continue 448a272653SPeter Holm df -k $dev 458a272653SPeter Holmdone | sort -rn +3 | head -1 | awk '{print $4, $6}'` 468a272653SPeter Holm[ -z "$r" ] && exit # No trim enabled file systems found 478a272653SPeter Holmset $r 488a272653SPeter Holmfree=$(($1 / 1024 / 10 * 9)) # in Mb 498a272653SPeter Holmmax=$((128 * 1024)) # Max is 128 GB 508a272653SPeter Holm[ $free -gt $max ] && free=$max 518a272653SPeter Holmmp=$2 528a272653SPeter Holmimage=`echo $mp/diskimage | sed s#//#/#` # fix "//" for case mp = "/" 538a272653SPeter Holmtrap "rm -f $image" EXIT INT 548a272653SPeter Holm 558a272653SPeter Holmecho "dd if=/dev/zero of=$image bs=1m count=$free" 568a272653SPeter Holmdd if=/dev/zero of=$image bs=1m count=$free status=none 578a272653SPeter Holmexit 0 58