Sun Storage 7000 Unified Storage System: High CPU Usage Seen After Drive Goes 'unavail/unknown/removed' - AK-8000-F0 Event (SAS-1 Only) (Doc ID 1544375.1)

Last updated on AUGUST 28, 2013

Applies to:

Sun Storage 7310 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Sun Storage 7410 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Sun Storage 7210 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Sun Storage 7110 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

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High CPU usage is observed after a drive goes 'unavail', 'unknown' or 'removed'.  An FMA "AK-8000-F0" event may be seen - "defect.ak.xmlrpc.hardware.invalid_disk_type"

Note: This issue only affects SAS-1 7x10 Appliances (using the 'mpt' driver).

 

To verify high CPU usage:

From CLI

       

 

Look for an problem indicating "AK-8000-F0"    => "The disk 'XXX' uses an interface (SAS) that is incompatible with the enclosure".

 

Cause

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