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Hi,
Please add to RH6.3 (seems to be approved by Benjamin Marzinski) IBM XIV multipath definitions (after double checking they look OK)
from http://git.opensvc.com/?p=multipath-tools/.git;a=commit;h=864162b08067d3e55d52996846d10a046956c6d6

Thanks,

Maxim Kozover,
IT & Interoperability Expert,
XIV, an IBM global brand.

Patch ported.

    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
A new builtin configuration has been added for the IBM XIV

Build-in configure for XIV is (device-mapper-multipath-0.4.9-56.el6.x86_64):
=====
device {
        vendor "IBM"
        product "2810XIV"
        path_grouping_policy multibus
        getuid_callout "/lib/udev/scsi_id --whitelisted --device=/dev/%n"
        path_selector "round-robin 0"
        path_checker tur
        features "1 queue_if_no_path"
        hardware_handler "0"
        prio const
        failback 15
        rr_weight uniform
        rr_min_io 15
        rr_min_io_rq 1
}
====

VERIFY.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2012-0946.html