T4-1/T4-2, System shut down due to ERROR: Unexpected zero POK value, adjusting state machine (Doc ID 1951488.1)

Last updated on MAY 18, 2017

Applies to:

SPARC T4-1 - Version All Versions to All Versions [Release All Releases]
SPARC T4-2 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

 System will shut down following a  ERROR:   Unexpected zero POK value, adjusting state machine event.

 

SP logs (show /SP/logs/event/list):

148    Tue Dec  2 06:07:54 2014  System    Log       minor          Host: Powered Off
147    Tue Dec  2 06:07:54 2014  System    Log       minor          ERROR:   Unexpected zero POK value, adjusting state machine

 

The vbsc log from the snapshot may show this error (/ilom/vbsc.log):

Dec  2 06:07:54 ERROR:   Unexpected zero POK value, adjusting state machine  
Dec  2 06:07:54 WARNING: sp_port_to_host_ldc: dropping data due to incomplete
                        write on fma channel, expected:actual (24:0)
Dec  2 06:07:54 DEBUG:   POK REG0: 0x80 NOT OK:PSU0|PSU1|CPU0|MEM|OIO|DC_POK|
Dec  2 06:07:54 DEBUG:   POK REG1: 0xa0 NOT
                        OK:CORE|CPU0_1V|CPU0_1V5|VDD_3V3|SAS_1V|5V|
Dec  2 06:07:54 DEBUG:   POK REG2: 0xf4 NOT OK:
Dec  2 06:07:54 DEBUG:   POK REG3: 0xff NOT OK: 

The above issue may be preceded or proceeded by a ereport.cpu.generic-sparc.c2c-prot-uc event.

 

Additionally, you may encounter a hostconfig problem:

1904 Wed May 17 17:51:10 2017 System Log major May 17 17:51:10 ERROR: Unexpected zero POK value, adjusting state machine

1901 Wed May 17 17:51:08 2017 System Log major May 17 17:51:08 ERROR: Fatal Hostconfig Error - Node: 0, Strand: 0

 

NOTE:

It's also possible the machine may report a SUN4V-8002-Q2 (fault.memory.memlink-uc) and/or SUN4V-8002-MJ (fault.cpu.generic-sparc.c2c-uc).

Cause

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