Dell PowerVault MD3200 Owner's Manual page 186

Table 13-1. Device Mapper Commands
Command
multipath -h
multipath -ll
multipath
multipath -f
<multipath_dev_node>
multipath -F
rescan_dm_devs
186
Configuration: Device Mapper Multipath for Linux
Descriptions
Prints usage information
Displays the current multipath topology using all
available information (sysfs, the device mapper,
path checkers, and so on)
Re-aggregates multipathing device with
simplified output.
Flushes out Device Mapper for the specified
multipathing device. Used if the underlying
physical devices are deleted/unmapped.
Flushes out all unused multipathing device maps.
Dell provided script. Forces a rescan of the host's
SCSI bus and aggregates multipathing devices as
needed. For use when:
• LUNs are dynamically mapped to the hosts.
• New targets are added to the host.
• Failback of the storage array is required.