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

• If you do not find the /etc/multipath.conf file, copy the conf/mul-

tipath.conf.HPTemplate.SLES11 template to /etc/multipath.conf file by executing

the following command:

#cp conf/multipath.conf.HPTemplate.SLES11 /etc/multipath.conf

• If the /etc/multipath.conf file is already present, edit the file with the recommended

device parameter values. For more details on recommended device parameter values, see

Recommended device parameter values.

6. Restart multipath services by executing the following command:

# /etc/init.d/multipathd restart

Configuring Device Mapper Multipath to enable HP arrays

This section describes the following:

• Recommended device parameter values

• Setting up HPDM Multipath

• Setting up Device Mapper Multipath daemon

Recommended device parameter values

To enable HP arrays, edit /etc/multipath.conf file by adding the following under devices

section:

For EVA3000/EVA5000/EVA4x00/EVA6x00/EVA8x00

device

{

vendor "(HP|COMPAQ)"

product "HSV1[01]1\(C\)COMPAQ|HSV[2][01]0|HSV300|HSV4[05]0"

path_grouping_policy group_by_prio

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

path_checker tur

path_selector "round-robin 0"

prio alua

rr_weight uniform

failback immediate

hardware_handler "0"

no_path_retry 12

rr_min_io 100

}