Multipath commands

Multipath commands are helpful when working with multipath topologies and configurations.

Two other multipath commands are helpful when working with multipath topologies and configurations.

multipath –ll

Shows the current multipath topology from all available information, such as sysfs, the device mapper, or path checkers. When a new device is added to a system that is running multipathing, run the multipath -v2 command so that the device can be monitored by the multipathing software.

A typical output of a volume might display similar to the following example:

mpathch (3600507680181820bc800000000000009) dm-1 IBM     ,2145
size=200M features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=50 status=active
| |- 26:0:0:5 sdf  8:80   active ready running
| `- 27:0:0:5 sdl  8:176  active ready running
`-+- policy='round-robin 0' prio=10 status=enabled
  |- 28:0:0:5 sdr  65:16  active ready running
  `- 29:0:0:5 sdx  65:112 active ready running

multipathd –k

Puts your session into interactive mode. Commands can be used to list the current configuration or to change the configuration. For example, <show config> lists the current configuration, and <reconfigure> gets the latest configuration from the configuration file (etc/multipath.conf).