#!/bin/bash

# Copyright (c) 2016 Red Hat, Inc. 
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Author: LiLin <lilin@redhat.com>

source ../include/ec.sh || exit 200
tlog "running $0"

rpm -q device-mapper-multipath || yum -y install device-mapper device-mapper-multipath
cleanup

trun "rm /etc/multipath.conf"
trun "mpathconf --enable"
trun "service multipathd stop"
trun "modprobe scsi_debug num_tgts=1 vpd_use_hostno=0 add_host=2 delay=20  max_luns=2 no_lun_0=1 opts=2"
sleep 5
trun "multipath"
sleep 5
trun "multipath -l"
trun "multipath -l | grep scsi_debug | awk '{print \$1}' | head -1"
mpathdev=$tSTDOUT

assert '[[ -n "$mpathdev" ]]'

trun "multipath -l $mpathdev | grep 'active undef' | wc -l"
before_active=$tSTDOUT

trun "dd if=/dev/zero of=/dev/mapper/$mpathdev bs=1024 seek=2330 count=10 2>&1 | grep -o 'Input/output error'"
IO_error=$tSTDOUT
assert '[[ -n "$IO_error" ]]'

#after_active=`multipath -l $mpathdev | grep "active undef" | wc -l`
trun "multipath -l $mpathdev | grep 'active undef' | wc -l"
after_active=$tSTDOUT
tok '[[ "$before_active" -eq "$after_active" ]]'
cleanup
tend