4 # SPDX-License-Identifier: BSD-2-Clause-FreeBSD
6 # Copyright (c) 2018 Dell EMC Isilon
8 # Redistribution and use in source and binary forms, with or without
9 # modification, are permitted provided that the following conditions
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.
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
30 # Parallel unmount of the same mount point with one mounter thread and 4
31 # threads doing unmount.
33 # "panic: dounmount: invalid lock refcount in the drain path @
34 # ../../../kern/vfs_mount.c:1409" seen in WiP code.
36 [ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
41 continue=/tmp/umount3.cont
44 [ -c /dev/md$mdstart ] && mdconfig -d -u $mdstart
45 mdconfig -a -t swap -s 10m -u $mdstart || exit 1
46 bsdlabel -w md$mdstart auto
47 newfs $newfs_flags md${mdstart}$part > /dev/null
48 mount /dev/md${mdstart}$part $mntpoint
50 for i in `jot $parallel`; do
51 while [ -f $continue ]; do umount $mntpoint; done 2>/dev/null &
55 while [ $((`date '+%s'` - start)) -lt 300 ]; do
56 mount | grep -q "on $mntpoint " ||
57 mount /dev/md${mdstart}$part $mntpoint
62 while mount | grep $mntpoint | grep -q /dev/md; do
63 umount $mntpoint || sleep 1
65 mdconfig -d -u $mdstart