Multipaths Device Configuration Attributes - Red Hat DEVICE-MAPPER MULTIPATH 5.2 Configuration And Administration Manual

Attribute
user_friendly_names
Table 4.1. Multipath Configuration Defaults

4. Multipaths Device Configuration Attributes

Table 4.2, "Multipath Attributes"
of the
multipath.conf
apply only to the one specified multipath. These defaults are used by DM-Multipath and override
attributes set in the
defaults
Attribute
wwid
alias
path_grouping_policy
path_selector
failback
Description
A value of
queue
the path is fixed.
The default value is (null).
If set to , specifies that the system should using the
yes
bindings file
/var/lib/multipath/bindings
persistent and unique alias to the multipath, in the form of
. If set to
mpathn
the WWID as the alias for the multipath. In either case, what
is specified here will be overriden by any device-specific
aliases you specify in the
configuration file. The default value is
shows the attributes that you can set in the
configuration file for each specific multipath device. These attributes
and sections of the
devices
Description
Specifies the WWID of the multipath device to which the
attributes apply.
multipath
Specifies the symbolic name for the multipath device to which
the
multipath
Specifies the default path grouping policy to apply to
unspecified multipaths. Possible values include:
= 1 path per priority group
failover
= all valid paths in 1 priority group
multibus
group_by_serial
number
group_by_prio
group_by_node_name
Specifies the default algorithm to use in determining what
path to use for the next I/O operation.
Specifies path group failback.
A value of 0 or
path group whith a higher priority than the current path group
the system switches to that path group.
Multipaths Device Configuration Attributes
indicates that queuing should not stop until
, specifies that the system should use use
no
multipaths
multipath.conf
attributes apply.
= 1 priority group per detected serial
= 1 priority group per path priority value
= 1 priority group per target node name
specifies that as soon as there is a
immediate
to assign a
section of the
.
no
section
multipaths
file.
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