1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5# 6# Copyright (c) 2022 Peter Holm <pho@FreeBSD.org> 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# Simple test to demonstrate EMLINK issue on a SU file system. 31 32# mkdir: /mnt10/a994: Too many links 33 34[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 35. ../default.cfg 36 37echo "$newfs_flags" | grep -q U || exit 0 38log=/tmp/nlink2.sh.log 39md=$mdstart 40mp=/mnt$md 41mkdir -p $mp 42set -e 43mount | grep -q "on $mp " && umount -f $mp 44mdconfig -l | grep -q md$md && mdconfig -d -u $md 45 46mdconfig -a -t swap -s 1g -u $md 47newfs $newfs_flags -n md$md > /dev/null 48mount /dev/md$md $mp 49set +e 50 51start=`date +%s` 52for i in `jot 1000`; do 53 jot 1000 | xargs -P0 -I% mkdir $mp/a% || { s=1; break; } 54 jot 1000 | xargs -P0 -I% rmdir $mp/a% 55 t=$((`date +%s` - start)) 56 if [ $t -ge 300 ]; then 57 echo "Warn: Timed out in loop #$i after $t seconds" 58 break 59 fi 60done 61if [ $s ]; then 62 echo "Failed in loop #$i" 63 df -i $mp 64fi 65 66umount $mp 67fsck_ffs -fy /dev/md$md > $log 2>&1 68grep -Eq "WAS MODIFIED" $log && { s=$((s + 2)); cat $log; } 69mdconfig -d -u $md 70rm -f $log 71exit $s 72