Adding Devices To The Multipathing Database - Red Hat ENTERPRISE LINUX 5 DM MULTIPATH Configuration And Administration Manual

Chapter 3. Setting Up DM-Multipath
[root@rh4cluster1 ~]# multipath -v2
create: 3600a0b80001327d80000006d43621677
[size=12 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:0:0 sdb
\_ 3:0:0:0 sdf
create: 3600a0b80001327510000009a436215ec
[size=12 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:0:1 sdc
\_ 3:0:0:1 sdg
create: 3600a0b80001327d800000070436216b3
[size=12 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:0:2 sdd
\_ 3:0:0:2 sdh
create: 3600a0b80001327510000009b4362163e
[size=12 GB][features="0"][hwhandler="0"]
\_ round-robin 0
\_ 2:0:0:3 sde
\_ 3:0:0:3 sdi

3.3. Adding Devices to the Multipathing Database

By default, DM-Multipath includes support for the most common storage arrays that support DM-
Multipath. The default configuration values, including supported devices, can be found in the
multipath.conf.defaults file.
If you need to add a storage device that is not supported by default as a known multipath device, edit
the /etc/multipath.conf file and insert the appropriate device information.
For example, to add information about the HP Open-V series the entry looks like this:
devices {
device {
vendor "HP"
product "OPEN-V."
getuid_callout "/sbin/scsi_id -g -u -p0x80 -s /block/%n"
}
}
For more information on the devices section of the configuration file, see
File Devices".
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Section 4.5, "Configuration