257 lines
7.1 KiB
Bash
Executable File
257 lines
7.1 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2016 Red Hat, Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Author: Lin Li <lilin@redhat.com>
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path=$(pwd)
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source ../include/utils.sh || exit 1
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source ../include/include.sh || exit 1
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source ../include/tc.sh || exit 1
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source ../include/mpath.sh || exit 1
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source ../include/scsi_debug.sh || exit 1
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#this script usually is only used by current case
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#private global variables, lower case and no under line is okay
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mpath=
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function _isconfig (){
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[ -z $mpath ] && return 2
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Cmd "multipath -ll $mpath"
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}
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function _init (){
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#will improve this function
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#should return the multipathed disk created by scsi_debug, don't consider the other mutipathed disks
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#olnly append the black list exception to /etc/multipath.conf not override
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Setup_Multipath || Fail "failed to create multipathed device via scsi_debug"
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mpath=$RETURN_STR
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_isconfig
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}
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function _destroy (){
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sleep 10
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Cmd "multipath -F"
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sleep 5
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Cmd "modprobe -r scsi_debug"
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}
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# ---------------------------------------------------------#
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# Mutipath_installation()
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# Usage:
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# check if multipath starts, if not install it with yum
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# Parameter:
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# NULL
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# Returns:
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# Return code:
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# 0 on success
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# 1 if something went wrong.
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# ---------------------------------------------------------#
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function Multipath_installation (){
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Cmd "rpm -qi device-mapper-multipath" && return 0
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Cmd "yum install -y device-mapper-multipath"
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}
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# ---------------------------------------------------------#
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# Print_kernel_info()
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# Usage:
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# print the detail running kernel information.
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# Parameter: # NULL
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# Returns:
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# Return code:
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# 0 on success
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# 1 if something went wrong.
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# ---------------------------------------------------------#
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function Print_kernel_info (){
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Cmd "lsb_release -a"
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Cmd "uname -a"
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}
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# ---------------------------------------------------------#
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# Print_multipath_pkginfo()()
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# Usage:
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# print the multipath pacakge information
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# Parameter:
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# NULL
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# Returns:
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# Return code:
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# 0 on success
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# 1 if something went wrong.
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# ---------------------------------------------------------#
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function Print_multipath_pkginfo (){
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Cmd "rpm -qi device-mapper-multipath"
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Cmd "rpm -qi kpartx"
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}
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# ---------------------------------------------------------#
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# Setup_Multipath ()
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# Usage:
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# return mpath_name if we have multipath devices, if not,
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# we use scsi_debug to create a multipath device.
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# Parameter:
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# NULL
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# Returns:
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# Return code:
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# 0 on success
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# 1 if something went wrong.
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# Return string:
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# RETURN_STR # $mpath_name_list, like "mpath0 mpath1"
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# ---------------------------------------------------------#
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function Setup_Multipath (){
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RETURN_STR=''
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local mpath_name_list=$(dmsetup table \
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| perl -ne 'print "$1 " if /(mpath[a-z0-9]+):[0-9 ]+multipath.*/')
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if [ "CHK${mpath_name_list}" != "CHK" ];then
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mpath_name_list="$(echo ${mpath_name_list} | sed -e 's/ $//')"
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echo "INFO: Found multipath devices: ${mpath_name_list}"
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#RHEL 5 will disable some wwn mpath if we install OS with ondisk=mapper/mpath0
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# option, so we need to enable them all
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if [ "CHK$(uname -r | egrep "2\.6\.18.*el5")" != "CHK" ];then
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cat << AA > /etc/multipath.conf
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defaults {
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user_friendly_names yes
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}
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blacklist {
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device {
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vendor .*
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product .*
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}
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}
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blacklist_exceptions {
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device {
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vendor Linux
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product scsi_debug
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}
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device {
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vendor IQSTOR
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product .*
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}
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device {
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vendor NETAPP
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product .*
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}
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device {
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vendor HITACHI
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product .*
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}
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}
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AA
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service multipathd start
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sleep 5s #multipathd return premature
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multipath -r
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multipathd -k'reconfigure'
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sleep 5s
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mpath_name_list=$(dmsetup table \
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| perl -ne 'print "$1 " if /(mpath[a-z0-9]+):[0-9 ]+multipath.*/')
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fi
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if [ "CHK${mpath_name_list}" == "CHK" ];then
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echo -n "FATAL: still no mulipath devices setup,"
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echo " check code in Setup_Multipath()"
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RETURN_STR=''
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return 1
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fi
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RETURN_STR="${mpath_name_list}"
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return 0
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fi
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#setup scsi_debug
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echo "INFO: Loading scsi_debug module for simulation of mpath"
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modprobe scsi_debug \
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num_tgts=1 vpd_use_hostno=0 \
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add_host=4 delay=20 \
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max_luns=2 no_lun_0=1 2>&1 1>/dev/null
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echo "INFO: Waiting for udev to create /dev/sdX"
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sleep 15s #wait for udev to create /dev/sdX
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rpm -q device-mapper-multipath 2>/dev/null 1>/dev/null
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if [ $? -ne 0 ];then
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echo "INFO: Installing device-mapper-multipath via yum"
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yum -y install device-mapper-multipath
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fi
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#enable multipath for scsi_debug.
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cat << AA > /etc/multipath.conf
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defaults {
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#Enable multibus is for mutlbus testing
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path_grouping_policy multibus
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user_friendly_names yes
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}
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blacklist {
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device {
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vendor .*
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product .*
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}
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}
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blacklist_exceptions {
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device {
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vendor Linux
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product scsi_debug
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}
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}
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AA
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echo "INFO: /etc/multipath.conf updated"
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cat /etc/multipath.conf
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echo "INFO: Restarting multiapth and reload configuration"
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service multipathd restart
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sleep 5s #multipathd return premature
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multipathd -k'reconfig'
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sleep 5s
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mpath_name_list=$(dmsetup table | perl -ne 'print "$1 " if /(mpath[a-z0-9]+):[0-9 ]+multipath.*/')
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if [ "CHK${mpath_name_list}" != "CHK" ];then
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mpath_name_list="$(echo ${mpath_name_list} | sed -e 's/ $//')"
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echo "INFO: found mpath: ${mpath_name_list}"
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RETURN_STR="${mpath_name_list}"
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return 0
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fi
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return 1
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} #end of functoin Setup_Multipath
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get_wwid_of_disk()
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{
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# we should not use scsi_id or /dev/disk/by-id to get the wwid
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# since multipath could replace the white spaces of wwid if
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# having white spaces. we should use
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# multipathd show paths format %w %d
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# to get the wwid
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for dev in `ls /dev/disk/by-id/*`
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do
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if readlink $dev | grep -qw "$disk$"
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then
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wwid=$(basename $dev | sed 's/^[^-]*-//g')
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break
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fi
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done
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if test X$wwid = X
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then
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wwid=$(/lib/udev/scsi_id --page=0x83 --whitelisted --device=/dev/$disk)
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fi
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echo $wwid
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# multipathd_running || texit "multipathd is not running"
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# local disk=$1
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# local wwid=$(multipathd show paths format %d,%w | grep "^$disk\s*," | \
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# awk -F, '{ print $2 }' | sed 's/\s//g')
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# echo $wwid
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}
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