1#!/bin/sh 2 3# 4# SPDX-License-Identifier: BSD-2-Clause 5# 6# Copyright (c) 2022 Peter Holm 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. 31 32[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1 33. ../default.cfg 34 35md1=$mdstart 36md2=$((md1 + 1)) 37mp1=/mnt$md1 38mp2=/mnt$md2 39mkdir -p $mp1 $mp2 40set -e 41for i in $mp1 $mp2; do 42 mount | grep -q "on $i " && umount -f $i 43done 44for i in $md1 $md2; do 45 mdconfig -l | grep -q md$i && mdconfig -d -u $i 46done 47 48mdconfig -a -t swap -s 2g -u $md1 49mdconfig -a -t swap -s 2g -u $md2 50newfs $newfs_flags -n md$md1 > /dev/null 51newfs $newfs_flags -n md$md2 > /dev/null 52mount /dev/md$md1 $mp1 53mount /dev/md$md2 $mp2 54df -i $mp1 $mp2 55echo 56mount -t unionfs -o noatime $mp1 $mp2 57set +e 58 59df -i $mp2 60for i in `jot 100`; do 61 jot 1000 | xargs -P0 -I% mkdir $mp2/a% || { s=1; break; } 62 jot 1000 | xargs -P0 -I% rmdir $mp2/a% 63done 64[ $s ] && echo "Failed in loop #$i" 65df -i $mp2 | tail -1 66 67while mount | grep -Eq "on $mp2 .*unionfs"; do 68 umount $mp2 && break 69 sleep 5 70done 71umount $mp2 72umount $mp1 73mdconfig -d -u $md2 74mdconfig -d -u $md1 75exit $s 76