multipath [\|-v.IRverbosity\|] [\|-b.IRbindings_file\|] [\|-d\|] [\|-h|-l|-ll|-f|-t|-F|-B|-c|-q|\|-r|-w|-W\|] [\|-p.BRfailover|multibus|group_by_serial|group_by_prio|group_by_node_name\|] [\|device\|]


multipath is used to detect and coalesce multiple paths to devices, for fail-over or performance reasons.


-v level

verbosity, print all paths and multipaths


no output


print the created or updated multipath names only, for use to feed other tools like kpartx

2 +

print all info : detected paths, coalesced paths (ie multipaths) and device maps


print usage text


dry run, do not create or update devmaps


show the current multipath topology from information fetched in sysfs and the device mapper


show the current multipath topology from all available information (sysfs, the device mapper, path checkers ...)


flush a multipath device map specified as parameter, if unused


flush all unused multipath device maps


print internal hardware table to stdout


force devmap reload


treat the bindings file as read only

-b bindings_file

set user_friendly_names bindings file location. The default is /etc/multipath/bindings


check if a block device should be a path in a multipath device


allow device tables with queue_if_no_path when multipathd is not running


remove the wwid for the specified device from the wwids file


reset the wwids file to only include the current multipath devices

-p policy

force new maps to use the specified policy:


1 path per priority group


all paths in 1 priority group


1 priority group per serial


1 priority group per priority value. Priorities are determined by callout programs specified as a global, per-controller or per-multipath option in the configuration file


1 priority group per target node name. Target node names are fetched in /sys/class/fc_transport/target*/node_name.

Existing maps are not modified.


update only the devmap specified by device, which is either:


a devmap name


a path associated with the desired devmap; the path may be in one of the following formats:





RELATED TO multipath…


multipath was developed by Christophe Varoqui, <[email protected]> and others.