Technical data

device
{
vendor
product
path_grouping_policy
getuid_callout
rr_weight
rr_min_io
path_checker
failback
no_path_retry
"HP”
"OPEN-*"
multibus
"/sbin/scsi_id -g -u -s /block/%n"
uniform
100
tur
immediate
12
}
NOTE:
For MSA 2000 Storage Product Family arrays (MSA2012fc/MSA2212fc/MSA2012i, add the device
section in /etc/multipath.conf file. For HP recommended device parameters, see For MSA2000
Storage Product Family arrays.
NOTE:
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 a re based on these emulation types. A new device section must be
added for each emulation type, b e cause 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.
IMPORTANT:
After editing
the /etc/multipath.conf file for HP StorageWorks Arrays, you must restart
multipathd d
aemon and run multipath command. For more information, see Starting HPDM
Multipath.
Starting HPDM Multipath
Whenever an attribute for the LUNs of any of the HP supported storage arrays changes, the multipathd
daemon must be restarted and the con fig uration must be reloaded by executing the following comm ands:
# /etc/init.d/multipathd restart
# /sbin/multipath
These steps are required only if the attributes are modified.
To view the status of the multipath devices, complete the following steps:
1. Run multipath utility.
Use the # /sbin/multipath -ll option.
For information on status maps in multipath -ll for HPDM Multipath devices, see Using HPDM
Multipath.
Device Mapper Multipath Enablement Kit for HP StorageWorks Disk Arrays
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