linux 多路径配置

#软件安装

yum install device-mapper-multipath

systemctl enable multipathd.service

#配置文件生成

cp /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf  /etc/multipath.conf

#磁盘聚合

systemctl restart multipathd.service

systemctl reload multipathd.service

multipath -F

multipath –v3

multipath –ll

#默认配置文件信息：

服务器启动之后设备的wwid会自动添加到/etc/multipath/wwids

绑定文件/etc/multipath/bindings,该文件里面的映射关系是自动生成的,不需要进行手工编辑

然后进行重新加载配置
删除后进行加载
[root@localhost multipath]# multipath -F
[root@localhost multipath]# multipath -r
[root@localhost multipath]# multipath -ll

99-oracle-asmdevices.rules

文件文件内容如下:
ENV{DM_NAME}=="ocrdisk01", OWNER:="grid", GROUP:="asmadmin", MODE:="660"
ENV{DM_NAME}=="ocrdisk02", OWNER:="grid", GROUP:="asmadmin", MODE:="660"
ENV{DM_NAME}=="ocrdisk03", OWNER:="grid", GROUP:="asmadmin", MODE:="660"
ENV{DM_NAME}=="datadisk01", OWNER:="grid", GROUP:="asmadmin", MODE:="660"
ENV{DM_NAME}=="datadisk02", OWNER:="grid", GROUP:="asmadmin", MODE:="660"

[root@localhost ~]#/sbin/udevadm control --reload 

[root@localhost ~]# /sbin/udevadm trigger --type=devices --action=change
[root@localhost bin]# udevadm trigger