Centos7 安装配置多路径（Multipath）磁盘访问

1、安装多路径软件

yum install device-mapper-multipath

2、将多路径软件添加至内核模块中

modprobe dm-multipath

modprobe dm-round-robin

3、检查内核添加情况

lsmod |grep multipath

4、启动multipathd服务

systemctl restart multipathd

5、设置开启自启动multipathd服务

systemctl enable multipathd

6、创建multipath配置文件

/etc/multipath.conf

内容如下（根据存储主机和自己机器的wwiid进行修改）：

blacklist {
wwid 3600508b1001c044c39717726236c68d5
}
defaults {
user_friendly_names yes
polling_interval 10
queue_without_daemon no
flush_on_last_del yes
checker_timeout 120
}
devices {
device {
vendor “MacroSAN”
product “LU”
path_grouping_policy group_by_prio
no_path_retry 30
prio alua
path_checker tur
path_selector “round-robin 0”
hardware_handler “0”
failback 15
}
}
multipaths {
multipath {
wwid 3600b342c2037975d3e7bd0984d0000d5
alias mpatha
}

multipath {

wwid 3600b3426fb82c96d983ddfc59d0000d8

alias mpathb

}

}

7、重启multipathd服务

systemctl restart multipathd

8、查看多路径状态

multipath -ll

lsblk

fdisk -l