Novell LINUX ENTERPRISE SERVER 10 SP2 - STORAGE ADMINISTRATION GUIDE 05-15-2009 Administration Manual page 61

Multipath Attribute Description
blacklist Specifies the list of device
names to ignore as non-
multipathed devices, such as
cciss, fd, hd, md, dm, sr, scd,
st, ram, raw, loop.
blacklist_exceptions Specifies the list of device
names to treat as multipath
devices even if they are
included in the blacklist.
getuid_callout The default program and
argumentss to callout to
obtain a unique path identifier.
Should be specified with an
absolute path.
path_grouping_policy Specifies the path grouping
policy for a multipath device
hosted by a given controller.
Values
For an example, see "Blacklisting Non-
Multipathed Devices in /etc/multipath.conf" on
page 57.
For an example, see the /usr/share/doc/
packages/multipath-tools/
multipath.conf.annotated
/lib/udev/scsi_id -g -u -s
This is the default location and arguments.
failover One path is assigned per priority group
so that only one path at a time is used.
multibus (Default) All valid paths are in one
priority group. Traffic is load-balanced across all
active paths in the group.
group_by_prio One priority group exists for
each path priority value. Paths with the same
priority are in the same priority group. Priorities
are assigned by an external program.
group_by_serial Paths are grouped by the
SCSI target serial number (controller node
WWN).
group_by_node_name One priority group is
assigned per target node name. Target node
names are fetched in
/sys/class/
fc_transport/target*/node_name
Managing Multipath I/O for Devices
file.
.
61