在Redhat Linux上为EVA4400安装多路径软件
1、检查操作系统的版本是否满足多路径软件的需求。
最新的Device Mapper Multipath的版本号为V4.41，支持的Linux系统如下：RHEL 4 Update 6 / RHEL 4 Update 7 / RHEL 4 Update 8 / RHEL 5 Update 2 / RHEL 5 Update 3 / RHEL 5 Update 4 / RHEL 5 Update 5 / SLES 10 - SP2 / SLES 10 - SP3 / SLES 11，如果你的操作系统不在上述列表中，需要在HP网站去下载更老的软件版本。HP Device Mapper Multipath的下载地址为：http://www.hp.com/go/devicemapper/
检查系统中是否安装了Device Mapper Multipath tools，可以通过命令插卡
#rpm -qa | grep device*，确保系统安装如下RPM包，比如，如果是Redhat Linux As4.8，则需要有如下的安装包
· For RHEL 4 Update 8:
· device-mapper-1.02.28-2.el4 or later
· device-mapper-multipath-0.4.5-35.el4 or later
2、检查HBA卡驱动是否安装正常
#lsmod
qla2xxx 1513504 24
scsi_transport_fc 205040 1 qla2xxx
mptspi 170792 4
mptscsih 196088 1 mptspi
mptbase 287248 2 mptspi,mptscsih
scsi_transport_spi 184056 1 mptspi
#modinfo qla2xxx
filename: /lib/modules/2.6.18-164.el5/kernel/drivers/scsi/qla2xxx/qla2xxx.ko
version: 8.03.00.10.05.04-k
license: GPL
description: QLogic Fibre Channel HBA Driver
author: QLogic Corporation
srcversion: AC7B23750E4AA3A4A2E581C
3、获取HBA卡的WWNP号
#more /proc/scsi/qla2xxxx/0 /proc/scsi/qla2xxxx/1
4、在EVA Command View中做好磁盘映射
5、安装 HPDMmultipath-4.4.1.tar.gz
. a:) Download the HPDM Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.4.1 available at: http://www.hp.com/go/devicemapper.
b:) Log in as root to the host system.
c:) Copy the installation tar package to a temporary directory (for example, /tmp/HPDMmultipath).
d:) Unbundle the package by executing the following commands:
#cd /tmp/HPDMmultipath
#tar -xvzf HPDMmultipath-4.4.1.tar.gz
#cd HPDMmultipath-4.4.1
e:) Verify that the directory contains the following files and folders:
· INSTALL
· README.txt
· COPYING
· bin
· SRPMS
· conf
· docs
f:) To install HPDM Multipath 4.4.1, execute the following command:
#./INSTALL
6、编辑/etc/multipath.conf，正常情况下安装最新版本的HPDM Multipath后，这个文件不需要再改变，看到很多以前的版本，需要改这个文件，可以做更多个性化的设置。
7、使用multipath –ll检查LUN是否挂载成功
mpath2 (360014380024d1db50001200000c80000) dm-3 HP,HSV300
[size=2.0G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=200][active]
\_ 4:0:1:1 sdc 8:32 [active][ready]
\_ 5:0:1:1 sdd 8:48 [active][ready]
\_ 4:0:8:1 sde 8:64 [active][ready]
\_ 5:0:8:1 sdj 8:144 [active][ready]
mpath1 (35001d3800004d350) dm-2 HP 73.4G,ST373455LC
[size=68G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=0][active]
\_ 2:0:6:0 sdb 8:16 [active][ready]
mpath3 (3600508b400090718000150000a3f0000) dm-4 HP,HSV210
[size=3.0G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=200][active]
\_ 4:0:9:1 sdf 8:80 [active][ready]
\_ 4:0:11:1 sdh 8:112 [active][ready]
\_ 5:0:9:1 sdk 8:160 [active][ready]
\_ 5:0:11:1 sdm 8:192 [active][ready]
\_ round-robin 0 [prio=40][enabled]
\_ 4:0:10:1 sdg 8:96 [active][ready]
\_ 4:0:12:1 sdi 8:128 [active][ready]
\_ 5:0:10:1 sdl 8:176 [active][ready]
\_ 5:0:12:1 sdn 8:208 [active][ready]
8、挂载成功后，使用fdisk /dev/mapper/mpath*来分区了