Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.3.1 release notes (AA-RWF9J-TE, November 2009)

NOTE:

• For SLES 11, in the device section, replace

“/sbin/scsi_id -g -u -s /block/%n”getuid_callout

with

“/lib/udev/scsi_id -g -u /dev/%n”getuid_callout

• For SLES 10 SP2/SLES 10 SP3/RHEL 5 U4, in the device section for MSA2012sa, MSA2312sa,

and MSA2324sa, replace

“/sbin/hp_scsi_id -g -u -n -s /block/%n”getuid_callout

with

“/sbin/scsi_id -g -u -n -s /block/%n”getuid_callout

• For SLES 10 SP2/SLES 10 SP3/SLES 11, in the device section, replace

“/sbin/mpath_prio_alua %n”prio_callout

with

aluaprio

• In XP arrays, there are different LUNs, such as OPEN-<x>, 3390-3A, 3390-3B, OP-

C:3390-3C, 3380KA, 3380-KB, and OP-C:3380-KC where x = {3,8,9,K,T,E,V}.

The product strings for XP LUNs are based on these emulation types. A new device section must

be added for each emulation type, because each product string requires a new device subsection.

OPEN-* is sufficient for the product string for all the XP LUNs with different OPEN emulations

because, regular expressions are supported in the /etc/multipath.conf file.

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

Device Mapper Multipath

Enablement Kit for HP StorageWorks Disk Arrays 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

• Configuring Emulex HBA parameters

• Configuring iSCSI parameters

• Configuring mptsas parameters