Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays v4.3.0 release notes (AA-RWF9H-TE, June 2009)

Configuring Device Mapper Multipath to enable HP arrays
This section describes the following:
• Recommended device parameter values
• Setting up HPDM Multipath
• SAN configuration supported by DM Multipath
Recommended device parameter values
To enable HP arrays, edit /etc/multipath.conf file by adding the following under devices
section:
For MSA2012fc/MSA2212fc/MSA2012i
device
{
vendor "HP"
product "MSA2[02]12fc|MSA2012i"
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
hardware_handler "0"
path_selector "round-robin 0"
path_grouping_policy multibus
failback immediate
rr_weight uniform
no_path_retry 18
rr_min_io 100
path_checker tur
}
For EVA3000/EVA5000/EVA4x00/EVA6x00/EVA8x00
device
{
vendor "(COMPAQ|HP)"
product "HSV1[01]1|HSV2[01]0|HSV300|HSV4[05]0"
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
prio_callout "/sbin/mpath_prio_alua /dev/%n"
hardware_handler "0"
path_selector "round-robin 0"
path_grouping_policy group_by_prio
failback immediate
rr_weight uniform
no_path_retry 18
rr_min_io 100
path_checker tur
}
For MSA1000/MSA1500
8