Sun Storage 7000 Unified Storage System: Chassis Serial Number (CSN) Is Missing / Not Showing / Not Present

Asset ID:	1-72-1560982.1
Update Date:	2018-01-05
Keywords:

Solution Type Problem Resolution Sure

Solution 1560982.1 : Sun Storage 7000 Unified Storage System: Chassis Serial Number (CSN) Is Missing / Not Showing / Not Present - "no such chassis"

Applies to:

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]
Sun Storage 7410 Unified Storage System - Version All Versions to All Versions [Release All Releases]
7000 Appliance OS (Fishworks)

Symptoms

To discuss this information further with Oracle experts and industry peers, we encourage you to review, join or start a discussion in the My Oracle Support Community - Disk Storage ZFS Storage Appliance

The Chassis Serial Number (CSN) is used by the Appliance System Software in a number of ways.

The CSN relates to the Chassis of the NAS head and problems with the Service Processor (SP) software can cause zeros to be reported and even UI (BUI or CLI ) difficulties with messages such as "no such chassis".

An incorrect CSN can also lead to Phone Home services not working.

Please note that if the CSN is missing then a cluster peer that is rebooted will not join cluster (Applicable to Clustered Appliances only ).

if shell command 'akfixfru' is run whilst the CSN is zeros then devices such as Cache and system disks will have their correct CSN set to zeros, this can cause them to malfunction.

Addtionally when the CSN displays as 'unknown', disk replacements which were successful in the OS may fail to trigger a ZFS replace. This is because akd does not recognize the new disk (unknown-x) as being the same as the old disk (CSN-x).

For troubleshooting resilvers failing to start please see - https://stbeehive.oracle.com/teamcollab/wiki/AmberRoadSupport:TSG%20Storage#Disk+failure.2FResilvering+.3A+Data+drive

To confirm if your CSN is reporting correctly check the Chassis Serial Number/CSN field is not all 0s ( 0000000000 ):

From the CLI -

:> configuration version get csn

From the BUI -

Click on the Sun/Oracle icon on the top left of the BUI.

Cause

Certain conditions ( most commonly SP memory leak bugs in older 2.x SP code or FRU replacements ) can sometimes cause the CSN information to be lost from the SP.

This can cause the CSN to report all 0's.

Solution

Please contact Oracle Support for further assistance.

Oracle Support personal can perform a procedure to recover the CSN.

TSC should use the following procedure to recover the CSN -

https://stbeehive.oracle.com/teamcollab/wiki/AmberRoadSupport:Chassis+Serial+Number+Cleanup+procedure+%28RPE%29

NOTE: The above link is only accessible by NAS Storage-TSC engineers.

References

https://stbeehive.oracle.com/teamcollab/wiki/AmberRoadSupport:Chassis+Serial+Number+Cleanup+procedure+%28RPE%29

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