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 SEPTEMBER 30, 2022
Applies to:
Sun Storage 7410 Unified Storage System - Version All Versions to All Versions [Release All Releases]Sun Storage 7310 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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In this Document
| Symptoms |
| To verify high CPU usage: |
| To verify if a drive is unavailable / unknown state: |
| Cause |
| Solution |
| References |