With upcoming improvements to the VID/PID string comparison in the device array list of the SCSI device handler, adding the above PID entry is necessary for the ALUA handler to properly recognize the new "LUN C-Mode" NetApp LUNs.

(In reply to comment #1)
> With upcoming improvements to the VID/PID string comparison in the device array
> list of the SCSI device handler, adding the above PID entry is necessary for
> the ALUA handler to properly recognize the new "LUN C-Mode" NetApp LUNs.

This change is extremely benign and will allow correct operation of netapp storage arrays sited.

Tom Coughlan agrees with this as a z-stream request for rhel5.6.

This is NOT a zero-day request.

(In reply to comment #1)
> With upcoming improvements to the VID/PID string comparison in the device array
> list of the SCSI device handler, adding the above PID entry is necessary for
> the ALUA handler to properly recognize the new "LUN C-Mode" NetApp LUNs.

This alua_dev_list patch is planned for 5.7. 

It is not necessary to put this in the z-stream, because the upstream "improvements to the VID/PID string comparison" that make this patch essential are not planned for the z-stream.

> Tom Coughlan agrees with this as a z-stream request for rhel5.6.

Wrong again! ;)

Patch(es) available in kernel-2.6.18-254.el5
You can download this test kernel (or newer) from http://people.redhat.com/jwilson/el5
Detailed testing feedback is always welcomed.

Verified in RHEL 5.7 Snap3.

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-1065.html