安装
yum install device-mapper-multipath设置开机启动
systemctl enable multipathd.service添加配置文件
需要multipath正常工作只需要如下配置即可，如果想要了解详细的配置，请参考Multipath
# vi /etc/multipath.conf blacklist { devnode "^sda" } defaults { user_friendly_names yes path_grouping_policy multibus failback immediate no_path_retry fail }启动服务
systemctl start multipathd.service查看服务
# multipath -ll mpatha (360000000000000000e00000000010001) dm-2 IET ,VIRTUAL-DISK size=30G features='0' hwhandler='0' wp=rw `-+- policy='service-time 0' prio=1 status=active |- 3:0:0:1 sdd 8:48 active ready running `- 4:0:0:1 sde 8:64 active ready running此时，执行lsblk命令就可以看到多路径磁盘mpatha了：
# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 20G 0 disk ├─sda1 8:1 0 500M 0 part /boot └─sda2 8:2 0 19.5G 0 part ├─centos-root 253:0 0 17.5G 0 lvm / └─centos-swap 253:1 0 2G 0 lvm [SWAP] sdb 8:16 0 30G 0 disk sdc 8:32 0 30G 0 disk sdd 8:48 0 30G 0 disk └─mpatha 253:2 0 30G 0 mpath sde 8:64 0 30G 0 disk └─mpatha 253:2 0 30G 0 mpath sr0 11:0 1 603M 0 rom接下来，就可以对mpatha做分区、格式化和创建逻辑卷等各种磁盘操作了，此处不表。