device-mapper-multipath/tests/include/mpath.sh

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#!/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: Lin Li <lilin@redhat.com>
# filename: loop.sh
# USAGE
test x$LXT_MPATH = x || return
LXT_MPATH=1
#source /mnt/tests/kernel/storage/include/bash_modules/lxt/tc.sh
# make sure multipathd is running
get_mpath_disks()
{
multipathd_running || texit "multipathd is not running"
multipathd -k'show maps' 2>/dev/null | grep '^mpath' | awk '{print
"/dev/mapper/" $1}'
return 0
}
# make sure multipathd is running
get_wwid_of_disk()
{
# we should not use scsi_id or /dev/disk/by-id to get the wwid
# since multipath could replace the white spaces of wwid if
# having white spaces. we should use
# multipathd show paths format %w %d
# to get the wwid
for dev in `ls /dev/disk/by-id/*`
do
if readlink $dev | grep -qw "$disk$"
then
wwid=$(basename $dev | sed 's/^[^-]*-//g')
break
fi
done
if test X$wwid = X
then
wwid=$(/lib/udev/scsi_id --page=0x83 --whitelisted --device=/dev/$disk)
fi
echo $wwid
# multipathd_running || texit "multipathd is not running"
# local disk=$1
# local wwid=$(multipathd show paths format %d,%w | grep "^$disk\s*," | \
# awk -F, '{ print $2 }' | sed 's/\s//g')
# echo $wwid
}
get_scsi_id()
{
dev=$1
wwid=$(/lib/udev/scsi_id --page=0x83 --whitelisted --device=$dev --replace-whitespace)
echo $wwid
}
# make sure multipathd is running
get_mpath_disk_by_scsi_device()
{
# multipathd_running || texit "multipathd is not running"
local disk=$1
local mpath=$(multipathd show paths raw format "%d,%m" | grep "^$disk\s*," \
| awk -F, '{ print $2 }' | sed 's/\s//g')
echo $mpath
}
# make sure multipathd is running
get_major_minor_by_scsi_device()
{
multipathd_running || texit "multipathd is not running"
local disk=$1
local mm=$(multipathd show paths format %d,%D | grep "^$disk\s*," | \
awk -F, '{ print $2 }' | sed 's/\s//g')
echo $mm
}
# make sure multipathd is running
get_hcil_by_scsi_device()
{
multipathd_running || texit "multipathd is not running"
local disk=$1
local hcil=$(multipathd show paths format %d,%i | grep "^$disk\s*," | \
awk -F, '{ print $2 }' | sed 's/\s//g')
echo $hcil
}
# make sure multipathd is running
is_mpath()
{
multipathd_running || texit "multipathd is not running"
local mpath=$1
multipathd show maps format %n | grep -w "^$mpath" &> /dev/null
}
multipathd_running()
{
pidof multipathd &> /dev/null && return 0
return 1
}
# will set find_multipaths no and start multipathd
setup_multipath()
{
trun "rpm -q device-mapper-multipath || yum install -y device-mapper-multipath" || texit "fail to install multipath"
test -f /etc/multipath.conf && cp /etc/multipath.conf /etc/multipath.conf.storage_qe
trun "mpathconf --enable --find_multipaths n --with_multipathd y"
trun "multipath -r"
}
clear_multipath()
{
tlog "disable multipath and remove the mpath devices"
tlog "revert back the multipath.conf if has backup file"
test -f /etc/multipath.conf.storage_qe && cp /etc/multipath.conf.storage_qe /etc/multipath.conf &>/dev/null
( multipath -q && multipath -F ) &>/dev/null
stop_multipathd
}
get_unused_mpath()
{
multipathd_running &>/dev/null || texit "multipathd is not running"
rootdisk=$(get_root_disk)
rootmpath=$(get_mpath_disk_by_scsi_device $rootdisk)
if is_null $rootmpath; then
$maps=$(multipathd show maps format "%n" | grep -v name)
else
$maps=$(multipathd show maps format "%n" | grep -v name | grep -v $rootmpath)
fi
echo $maps
}
stop_multipathd() {
tlog "stop multipathd"
( pidof multipathd && service multipathd stop || pkill multipathd ) &>/dev/null
}