MAN page from PCLinuxOS multipath-tools-0.4.8-2pclos2017.x86_64.rpm
MULTIPATH
Section: Linux Administrator's Manual (8)
Updated: July 2006
Index NAME
multipath - Device mapper target autoconfig
SYNOPSIS
multipath[
-v verbosity][
-d][
-h|
-l|
-ll|
-f|
-F][
-p failover|
multibus|
group_by_serial|
group_by_prio|
group_by_node_name][
device]
DESCRIPTION
multipathis used to detect multiple paths to devices for fail-over or performance reasons and coalesces them
OPTIONS
- -v level
- verbosity, print all paths and multipaths
- 0
- no output
- 1
- 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
- -h
- print usage text
- -d
- dry run, do not create or update devmaps
- -l
- show the current multipath topology from information fetched in sysfs and the device mapper
- -ll
- show the current multipath topology from all available information (sysfs, the device mapper, path checkers ...)
- -f
- flush a multipath device map specified as parameter, if unused
- -F
- flush all unused multipath device maps
- -p policy
- force maps to specified policy:
- failover
- 1 path per priority group
- multibus
- all paths in 1 priority group
- group_by_serial
- 1 priority group per serial
- group_by_prio
- 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
- group_by_node_name
- 1 priority group per target node name. Target node names are fetched in /sys/class/fc_transport/target*/node_name.
- device
- update only the devmap the path pointed bydeviceis in. deviceis in the /dev/sdb (as shown by udev in the $DEVNAME variable) or major:minor format.devicemay alternatively be a multipath mapname
SEE ALSO
udev(8),
dmsetup(8)
hotplug(8)
AUTHORS
multipathwas developed by Christophe Varoqui, <christophe.varoquiAATTfree.fr> and others.
Index
- NAME
- SYNOPSIS
- DESCRIPTION
- OPTIONS
- SEE ALSO
- AUTHORS
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