SPARC M5-32 and M6-32 Servers: Misleading uv-input-transient ereport is logged upon board insertion

Asset ID:	1-72-1679328.1
Update Date:	2016-05-31
Keywords:

Solution Type Problem Resolution Sure

Solution 1679328.1 : SPARC M5-32 and M6-32 Servers: Misleading uv-input-transient ereport is logged upon board insertion

Applies to:

SPARC M5-32 - Version All Versions to All Versions [Release All Releases]
SPARC M6-32 - Version All Versions to All Versions [Release All Releases]
Oracle SuperCluster M6-32 Hardware - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

FMA ereports on the SP indicating a sensor undervoltage similar to the following can be logged,

Example 1:

2014-04-02/07:48:08 ereport.chassis.sensor.voltage.uv-input-transient@/SYS/CMU4/MEM0
                         [unrecognized]
                         detector = /SYS/CMU4/MEM0/ECB/INPUT_UV_FAULT
                         hidden   = true

2014-04-02/07:48:09 ereport.chassis.sensor.voltage.uv-input-transient@/SYS/CMU4/CMP0
                         [unrecognized]
                         detector = /SYS/CMU4/CMP0/ECB/INPUT_UV_FAULT
                         hidden   = true

2014-04-02/07:48:09 ereport.chassis.sensor.voltage.uv-input-transient@/SYS/CMU4/MEM1
                         [unrecognized]
                         detector = /SYS/CMU4/MEM1/ECB/INPUT_UV_FAULT
                         hidden   = true

2014-04-02/07:48:10 ereport.chassis.sensor.voltage.uv-input-transient@/SYS/CMU4/CMP1
                         [unrecognized]
                         detector = /SYS/CMU4/CMP1/ECB/INPUT_UV_FAULT
                         hidden   = true

Example 2:

2014-04-02/10:18:33 ereport.chassis.sensor.voltage.uv-input-transient@/SYS/IOU0/IOB0
                         [unrecognized]
                         detector = /SYS/IOU0/IOB0/ECB/INPUT_UV_FAULT
                         hidden   = true

2014-04-02/10:19:21 ereport.chassis.sensor.voltage.uv-input-transient@/SYS/IOU0/IOB0
                         [unrecognized]
                         detector = /SYS/IOU0/IOB0/ECB/INPUT_UV_FAULT
                         hidden   = true

2014-04-02/10:19:23 ereport.chassis.device.fail@/SYS/IOU0/IOB0
                         [unrecognized]
                         detected-by    = POD
                         component_name = /SYS/IOU0/IOB0/GPIO0

2014-04-02/10:19:23 ereport.chassis.device.fail@/SYS/IOU0/IOB0
                         [unrecognized]
                         detected-by    = POD
                         component_name = /SYS/IOU0/IOB0/GPIO5

Changes

The ereports can be triggered by component (e.g., CMU, IOB) insertion.

Cause

Bug 18483009

Solution

Check the ILOM event log (ILOM CLI: -> show /SP/logs/event/list, snapshot:@usr@local@bin@spshexec_show_-script_@X@logs@event@list.out) for corresponding messages showing component Hot insertion similar to this example,

36465 Wed Apr 2 07:48:35 2014 Chassis   Action    major
       Hot insertion of /SYS/CMU4

36463 Wed Apr 2 07:46:49 2014 Chassis   Action    major
       Hot removal of /SYS/CMU4

Any ereports indicating undervoltage within the context of a Hot insertion may safely be ignored. The detected undervoltage is not indicative of faulty hardware when occuring upon board insert.

SysFW 9.5.1.c and higher remove the misleading messages. If 9.5.1.c or higher is installed the uv-input-transient ereports will no longer be reported upon component insertion.

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