#!/bin/sh

#
# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
#
# Copyright (c) 2018 Dell EMC Isilon
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#

# No problems seen.

[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
[ `uname -m` = "i386" ] && exit 0
[ `sysctl -n kern.kstack_pages` -lt 4 ] && exit 0

. ../default.cfg

[ `sysctl -n vm.swap_total` -eq 0 ] && exit 0
kldstat -v | grep -q zfs.ko  || { kldload zfs.ko ||
    exit 0; loaded=1; }

u1=$mdstart
u2=$((u1 + 1))

mdconfig -l | grep -q md$u1 && mdconfig -d -u $u1
mdconfig -l | grep -q md$u2 && mdconfig -d -u $u2

mdconfig -s 10g -u $u1
mdconfig -s 10g -u $u2

zpool list | egrep -q "^stress2_tank" && zpool destroy stress2_tank
[ -d /stress2_tank ] && rm -rf /stress2_tank
zpool create stress2_tank md$u1 md$u2 || exit 1
zfs create stress2_tank/test || exit 1

dd if=/dev/random of=/stress2_tank/test/file bs=1m count=4k status=none

start=`date +%s`
while [ $((`date +%s` - start)) -lt 300 ]; do
	zfs snapshot -r stress2_tank/test@1
	zfs send stress2_tank/test@1 | zfs recv -F stress2_tank/backup
	zfs destroy stress2_tank/test@1
	zfs destroy -r stress2_tank/backup
done

zfs destroy -r stress2_tank || exit 1
zpool destroy stress2_tank || exit 1

mdconfig -d -u $u1
mdconfig -d -u $u2
[ -n "$loaded" ] && kldunload zfs.ko
rm -f $diskimage
exit 0