Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.2.1 release notes (AA-RWF9H-TE, March 2009)

For MSA2012fc/MSA2212fc/MSA2012i

device

{

vendor "HP"

product "MSA2[02]12fc|MSA2012i"

path_grouping_policy multibus

getuid_callout "/lib/udev/scsi_id -g -u /dev/%n"

path_selector "round-robin 0"

rr_weight uniform

path_checker tur

hardware_handler "0"

failback immediate

no_path_retry 18

rr_min_io 100

}

For MSA2312fc/MSA2324fc

device

{

vendor "HP"

product "MSA2312fc|MSA2324fc"

getuid_callout "/lib/udev/scsi_id -g -u /dev/%n"

hardware_handler "0"

path_selector "round-robin 0"

prio alua

path_grouping_policy group_by_prio

failback immediate

rr_weight uniform

no_path_retry 18

rr_min_io 100

path_checker tur

}

NOTE:

• For more information on editing /etc/multipath.conf file, see the

Device Mapper Multipath

Enablement Kit for HP StorageWorks Disk Arrays 4.0.0 Installation and Reference Guide.

You

can find this document on the Manuals page of Multi-path Device Mapper for Linux Software,

which is accessible at http://www.hp.com/go/devicemapper.

Setting up HPDM Multipath

Setting up HPDM Multipath includes configuring HBA and iSCSI initiator parameters for multipathed

environment. This involves the following:

• Configuring QLogic HBA parameters