263 lines
7.3 KiB
Bash
Executable File
263 lines
7.3 KiB
Bash
Executable File
#!/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>
|
|
|
|
path=$(pwd)
|
|
source ../include/utils.sh || exit 1
|
|
source ../include/include.sh || exit 1
|
|
source ../include/tc.sh || exit 1
|
|
source ../include/mpath.sh || exit 1
|
|
source ../include/scsi_debug.sh || exit 1
|
|
|
|
#this script usually is only used by current case
|
|
#private global variables, lower case and no under line is okay
|
|
mpath=
|
|
|
|
function _isconfig (){
|
|
[ -z $mpath ] && return 2
|
|
Cmd "multipath -ll $mpath"
|
|
}
|
|
|
|
function _init (){
|
|
#will improve this function
|
|
#should return the multipathed disk created by scsi_debug, don't consider the other mutipathed disks
|
|
#olnly append the black list exception to /etc/multipath.conf not override
|
|
Setup_Multipath || Fail "failed to create multipathed device via scsi_debug"
|
|
mpath=$RETURN_STR
|
|
|
|
_isconfig
|
|
}
|
|
|
|
function _destroy (){
|
|
sleep 10
|
|
Cmd "multipath -F"
|
|
sleep 5
|
|
Cmd "modprobe -r scsi_debug"
|
|
}
|
|
|
|
|
|
# ---------------------------------------------------------#
|
|
# Mutipath_installation()
|
|
# Usage:
|
|
# check if multipath starts, if not install it with yum
|
|
# Parameter:
|
|
# NULL
|
|
# Returns:
|
|
# Return code:
|
|
# 0 on success
|
|
# 1 if something went wrong.
|
|
# ---------------------------------------------------------#
|
|
function Multipath_installation (){
|
|
Cmd "rpm -qi device-mapper-multipath" && return 0
|
|
Cmd "yum install -y device-mapper-multipath"
|
|
}
|
|
|
|
|
|
# ---------------------------------------------------------#
|
|
# Print_kernel_info()
|
|
# Usage:
|
|
# print the detail running kernel information.
|
|
# Parameter: # NULL
|
|
# Returns:
|
|
# Return code:
|
|
# 0 on success
|
|
# 1 if something went wrong.
|
|
# ---------------------------------------------------------#
|
|
function Print_kernel_info (){
|
|
Cmd "lsb_release -a"
|
|
Cmd "uname -a"
|
|
}
|
|
|
|
|
|
# ---------------------------------------------------------#
|
|
# Print_multipath_pkginfo()()
|
|
# Usage:
|
|
# print the multipath pacakge information
|
|
# Parameter:
|
|
# NULL
|
|
# Returns:
|
|
# Return code:
|
|
# 0 on success
|
|
# 1 if something went wrong.
|
|
# ---------------------------------------------------------#
|
|
function Print_multipath_pkginfo (){
|
|
Cmd "rpm -qi device-mapper-multipath"
|
|
Cmd "rpm -qi kpartx"
|
|
}
|
|
|
|
|
|
# ---------------------------------------------------------#
|
|
# Setup_Multipath ()
|
|
# Usage:
|
|
# return mpath_name if we have multipath devices, if not,
|
|
# we use scsi_debug to create a multipath device.
|
|
# Parameter:
|
|
# NULL
|
|
# Returns:
|
|
# Return code:
|
|
# 0 on success
|
|
# 1 if something went wrong.
|
|
# Return string:
|
|
# RETURN_STR # $mpath_name_list, like "mpath0 mpath1"
|
|
# ---------------------------------------------------------#
|
|
|
|
function Setup_Multipath (){
|
|
RETURN_STR=''
|
|
local mpath_name_list=$(dmsetup table \
|
|
| perl -ne 'print "$1 " if /(mpath[a-z0-9]+):[0-9 ]+multipath.*/')
|
|
if [ "CHK${mpath_name_list}" != "CHK" ];then
|
|
mpath_name_list="$(echo ${mpath_name_list} | sed -e 's/ $//')"
|
|
echo "INFO: Found multipath devices: ${mpath_name_list}"
|
|
#RHEL 5 will disable some wwn mpath if we install OS with ondisk=mapper/mpath0
|
|
# option, so we need to enable them all
|
|
if [ "CHK$(uname -r | egrep "2\.6\.18.*el5")" != "CHK" ];then
|
|
cat << AA > /etc/multipath.conf
|
|
defaults {
|
|
user_friendly_names yes
|
|
}
|
|
blacklist {
|
|
device {
|
|
vendor .*
|
|
product .*
|
|
}
|
|
}
|
|
blacklist_exceptions {
|
|
device {
|
|
vendor Linux
|
|
product scsi_debug
|
|
}
|
|
device {
|
|
vendor IQSTOR
|
|
product .*
|
|
}
|
|
device {
|
|
vendor NETAPP
|
|
product .*
|
|
}
|
|
device {
|
|
vendor HITACHI
|
|
product .*
|
|
}
|
|
}
|
|
AA
|
|
service multipathd start
|
|
sleep 5s #multipathd return premature
|
|
multipath -r
|
|
multipathd -k'reconfigure'
|
|
sleep 5s
|
|
mpath_name_list=$(dmsetup table \
|
|
| perl -ne 'print "$1 " if /(mpath[a-z0-9]+):[0-9 ]+multipath.*/')
|
|
fi
|
|
if [ "CHK${mpath_name_list}" == "CHK" ];then
|
|
echo -n "FATAL: still no mulipath devices setup,"
|
|
echo " check code in Setup_Multipath()"
|
|
RETURN_STR=''
|
|
return 1
|
|
fi
|
|
RETURN_STR="${mpath_name_list}"
|
|
return 0
|
|
fi
|
|
#setup scsi_debug
|
|
echo "INFO: Loading scsi_debug module for simulation of mpath"
|
|
local dev_size=100
|
|
if [ "CHK$(uname -m)" == "CHKi386" ] \
|
|
|| [ "CHK$(uname -m)" == "CHKi686" ]; then
|
|
#i386 platform cannot allocate 100 MiB in kernel space
|
|
dev_size=10
|
|
fi
|
|
modprobe scsi_debug dev_size_mb=${dev_size} \
|
|
num_tgts=1 vpd_use_hostno=0 \
|
|
add_host=4 delay=20 \
|
|
max_luns=2 no_lun_0=1 2>&1 1>/dev/null
|
|
|
|
echo "INFO: Waiting for udev to create /dev/sdX"
|
|
sleep 15s #wait for udev to create /dev/sdX
|
|
rpm -q device-mapper-multipath 2>/dev/null 1>/dev/null
|
|
if [ $? -ne 0 ];then
|
|
echo "INFO: Installing device-mapper-multipath via yum"
|
|
yum -y install device-mapper-multipath
|
|
fi
|
|
#enable multipath for scsi_debug.
|
|
cat << AA > /etc/multipath.conf
|
|
defaults {
|
|
#Enable multibus is for mutlbus testing
|
|
path_grouping_policy multibus
|
|
user_friendly_names yes
|
|
}
|
|
blacklist {
|
|
device {
|
|
vendor .*
|
|
product .*
|
|
}
|
|
}
|
|
blacklist_exceptions {
|
|
device {
|
|
vendor Linux
|
|
product scsi_debug
|
|
}
|
|
}
|
|
AA
|
|
echo "INFO: /etc/multipath.conf updated"
|
|
cat /etc/multipath.conf
|
|
echo "INFO: Restarting multiapth and reload configuration"
|
|
service multipathd restart
|
|
sleep 5s #multipathd return premature
|
|
multipathd -k'reconfig'
|
|
sleep 5s
|
|
|
|
mpath_name_list=$(dmsetup table | perl -ne 'print "$1 " if /(mpath[a-z0-9]+):[0-9 ]+multipath.*/')
|
|
if [ "CHK${mpath_name_list}" != "CHK" ];then
|
|
mpath_name_list="$(echo ${mpath_name_list} | sed -e 's/ $//')"
|
|
echo "INFO: found mpath: ${mpath_name_list}"
|
|
RETURN_STR="${mpath_name_list}"
|
|
return 0
|
|
fi
|
|
return 1
|
|
} #end of functoin Setup_Multipath
|
|
|
|
|
|
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
|
|
}
|
|
|