EMC LUNZ will not collapse to MPxIO virtual path after changed to data LUN (Doc ID 2029088.1)

Last updated on SEPTEMBER 02, 2016

Applies to:

Solaris Operating System - Version 8.0 and later
Qlogic FC HBA - Version All Versions and later
Sun Storage FC HBA - Version All Versions and later
Emulex FC HBA - Version All Versions and later
Information in this document applies to any platform.

Symptoms

Customer reports they have enabled MPxIO but it is not working for LUN 0 on their EMC storage. 

Other LUNs are assigned to MPxIO virtual controller as expected.

The LUN 0 device is showing up as "Path status: O.K." in 'luxadm display' output, which is a clue to this scenario :

 

Changes

EMC LUN 0 was recently converted from a LUNZ (non-data LUN 0) to a data LUN, and a reboot has not yet been performed.

Cause

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