1、检查安装包(linux系统自带的多路径安装包：multipath)
rpm -qa | grep device-mappercp
2、将multipath配置文件方在/home/multipath.conf
cp /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf
/etc/multipath.conf
3、编辑multipath.conf文件
vim /etc/multipath.conf
device {
vendor "HUAWEI"
product "XSG1"
path_grouping_policy
multibus
path_checker tur
path_selector "round-robin 0"
failback immediate
}
4、时期配置文件生效并查看状态，配置修改完毕后，依次执行
multipath—F
systemctl restart multipath.service
systemctl reload multipathd.service
multipath –v3
multipath –ll
5、linux中multipath生效后执行multipath –ll回显如下：
mpathe(36845b121004b71c40025afa300000006) dm-5 HUAWEI ,XSG1
size=1021G
features='0' hwhandler='0' wp=rw
`-+-
policy='round-robin 0' prio=1 status=active
`- 9:0:0:6
sdg 8:96 active ready running
mpathd(36845b121004b71c40025922a00000005) dm-4 HUAWEI ,XSG1
size=1.0T
features='0' hwhandler='0' wp=rw
`-+-
policy='round-robin 0' prio=1 status=active
`- 9:0:0:5
sdf 8:80 active ready running
mpathc(36845b121004b71c4002566fa00000004) dm-3 HUAWEI ,XSG1
size=4.0T
features='0' hwhandler='0' wp=rw
`-+-
policy='round-robin 0' prio=1 status=active
`- 9:0:0:4
sde 8:64 active ready running
mpathb(36845b121004b71c4000fe09f00000003) dm-2 HUAWEI ,XSG1
size=8.0T
features='0' hwhandler='0' wp=rw
`-+-
policy='round-robin 0' prio=1 status=active
`- 9:0:0:3
sdd 8:48 active ready running
mpatha(36845b121004b71c4000fcaa800000002) dm-1 HUAWEI ,XSG1
size=8.0T
features='0' hwhandler='0' wp=rw
`-+-
policy='round-robin 0' prio=1 status=active
`- 9:0:0:2
sdc 8:32 active ready running
mpathf(36845b121004b71c40025485600000001) dm-0 HUAWEI ,XSG1
size=4.0T
features='0' hwhandler='0' wp=rw
`-+-
policy='round-robin 0' prio=1 status=active
`- 9:0:0:1
sdb 8:16 active ready running
[root@localhost ~]# fdisk -l
其中mpatha、mpathb、mpathc、mpathd、mpathe、mpathf即为存储侧映射的6个lun
ls /dev/mapper/
mpatha、mpathb、mpathc、mpathd、mpathe、mpathf
parted /dev/mapper/mpatha
