Recognizing and Troubleshooting Missing or Erroneous Environmental Sensor Status output after a recent System Firmware Upgrade on Sun SPARC Enterprise T5120 Server

Asset ID:	1-72-1598134.1
Update Date:	2017-06-07
Keywords:

Solution Type Problem Resolution Sure

Solution 1598134.1 : Recognizing and Troubleshooting Missing or Erroneous Environmental Sensor Status output after a recent System Firmware Upgrade on Sun SPARC Enterprise T5120 Server

Applies to:

Sun SPARC Enterprise T5120 Server - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

Environmental sensor data missing or erroneous from Sun SPARC Enterprise T5120 Server's ALOM "showenvironment" output and Sensors showing Disabled in OS "prtdiag -v" output.

Example

From Service Processor ALOM:

sc> showenvironment

--------------------------------------------------------------------------------
System Temperatures (Temperatures in Celsius):
--------------------------------------------------------------------------------
Sensor                Status Temp LowHard LowSoft LowWarn HighWarn HighSoft HighHard
--------------------------------------------------------------------------------
/SYS/MB/T_AMB    OK 34 -10 -5 0 50 55 60
/SYS/MB/CMP0/T_TCORE UNKNOWN -- -- -- -- -- -- --      <--- Status "Unknown"
/SYS/MB/CMP0/T_BCORE UNKNOWN -- -- -- -- -- -- --      <--- Status "Unknown"
/SYS/MB/CMP0/BR0/CH0/D0/T_AMB OK 61 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR0/CH0/D1/T_AMB OK 51 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR0/CH1/D0/T_AMB OK 61 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR0/CH1/D1/T_AMB OK 57 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR1/CH0/D0/T_AMB OK 61 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR1/CH0/D1/T_AMB OK 59 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR1/CH1/D0/T_AMB OK 63 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR1/CH1/D1/T_AMB OK 57 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR2/CH0/D0/T_AMB OK 63 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR2/CH0/D1/T_AMB OK 61 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR2/CH1/D0/T_AMB OK 66 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR2/CH1/D1/T_AMB OK 56 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR3/CH0/D0/T_AMB OK 64 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR3/CH0/D1/T_AMB OK 57 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR3/CH1/D0/T_AMB OK 67 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR3/CH1/D1/T_AMB OK 53 -10 -8 -5 95 100 105
.
.
.
--------------------------------------------------------------------------------
Voltage sensors (in Volts):
--------------------------------------------------------------------------------
Sensor Status Voltage LowSoft LowWarn HighWarn HighSoft
--------------------------------------------------------------------------------
/SYS/MB/V_+3V3_MAIN OK 3.34 3.06 3.10 3.49 3.53
/SYS/MB/V_+12V0_MAIN OK 12.22 10.90 11.15 12.85 13.10
/SYS/MB/V_VDDIO OK 1.12 1.00 1.02 1.18 1.20
                                                                                               <--- Short List, missing 5 other values
--------------------------------------------------------------------------------
Power Supplies:
--------------------------------------------------------------------------------
Supply Status Fan_Fault Temp_Fault Volt_Fault Cur_Fault
--------------------------------------------------------------------------------
/SYS/PS0 OK OFF OFF OFF OFF
/SYS/PS1 OK OFF OFF OFF OFF

From Operating System:

$ prtdiag -v

System Configuration: Sun Microsystems sun4v SPARC Enterprise T5120

<snip>

Temperature sensors:
------------------------------------------------------------
Location Sensor Status
------------------------------------------------------------
SYS/MB T_AMB ok
SYS/MB/CMP0/BR0/CH0/D0 T_AMB ok
SYS/MB/CMP0/BR0/CH0/D1 T_AMB ok
SYS/MB/CMP0/BR0/CH1/D0 T_AMB ok
SYS/MB/CMP0/BR0/CH1/D1 T_AMB ok
SYS/MB/CMP0/BR1/CH0/D0 T_AMB ok
SYS/MB/CMP0/BR1/CH0/D1 T_AMB ok
SYS/MB/CMP0/BR1/CH1/D0 T_AMB ok
SYS/MB/CMP0/BR1/CH1/D1 T_AMB ok
SYS/MB/CMP0/BR2/CH0/D0 T_AMB ok
SYS/MB/CMP0/BR2/CH0/D1 T_AMB ok
SYS/MB/CMP0/BR2/CH1/D0 T_AMB ok
SYS/MB/CMP0/BR2/CH1/D1 T_AMB ok
SYS/MB/CMP0/BR3/CH0/D0 T_AMB ok
SYS/MB/CMP0/BR3/CH0/D1 T_AMB ok
SYS/MB/CMP0/BR3/CH1/D0 T_AMB ok
SYS/MB/CMP0/BR3/CH1/D1 T_AMB ok
SYS/MB/CMP0 T_TCORE disabled
SYS/MB/CMP0 T_BCORE disabled
.
.
.
Voltage sensors:
------------------------------------------------------------
Location Sensor Status
------------------------------------------------------------
SYS/MB V_VMEML disabled
SYS/MB V_VMEMR disabled
SYS/MB V_+3V3_STBY disabled
SYS/MB V_VCORE disabled
SYS/MB V_+3V3_MAIN ok
SYS/MB V_VDDIO ok
SYS/MB V_+12V0_MAIN ok
SYS/MB V_VBAT disabled
SYS/PS0 V_IN_MAIN ok
SYS/PS0 V_OUT_MAIN ok
SYS/PS1 V_IN_MAIN ok
SYS/PS1 V_OUT_MAIN ok

Voltage indicators:
------------------------------------------------------------
Location Indicator Condition
------------------------------------------------------------
SYS/MB VCORE_POK disabled
SYS/MB VMEML_POK disabled
SYS/MB VMEMR_POK disabled
SYS/PS0 AC_POK ok
SYS/PS0 DC_POK ok
SYS/PS0 VOLT_FAULT ok
SYS/PS1 AC_POK ok
SYS/PS1 DC_POK ok
SYS/PS1 VOLT_FAULT ok

Changes

A recent recommended system firmware update was done by the user.

Cause

The cause of this issue is an Incomplete Firmware Update.
The data should not indicate missing, disabled, or unknown sensor statuses because those sensors are responsible for system component monitoring, without which such environmental monitoring would not be possible.
The cause for this data has been determined as an Incomplete Firmware Update that resulted in collecting and/or reporting on status of such environmental sensors, by the service processor, to be either erroneous or omitted altogether.

The expected values of the same output should appear as the following:

From Service Processor ALOM:

sc> showenvironment

--------------------------------------------------------------------------------
System Temperatures (Temperatures in Celsius):
--------------------------------------------------------------------------------
Sensor Status Temp LowHard LowSoft LowWarn HighWarn HighSoft HighHard
--------------------------------------------------------------------------------
/SYS/MB/T_AMB OK 36 -10 -5 0 50 55 60
/SYS/MB/CMP0/T_TCORE OK 73 -14 -9 -4 86 98 106
/SYS/MB/CMP0/T_BCORE OK 72 -14 -9 -4 86 98 106
/SYS/MB/CMP0/BR0/CH0/D0/T_AMB OK 62 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR0/CH0/D1/T_AMB OK 52 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR0/CH1/D0/T_AMB OK 62 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR0/CH1/D1/T_AMB OK 59 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR1/CH0/D0/T_AMB OK 62 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR1/CH0/D1/T_AMB OK 60 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR1/CH1/D0/T_AMB OK 64 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR1/CH1/D1/T_AMB OK 58 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR2/CH0/D0/T_AMB OK 65 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR2/CH0/D1/T_AMB OK 62 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR2/CH1/D0/T_AMB OK 67 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR2/CH1/D1/T_AMB OK 57 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR3/CH0/D0/T_AMB OK 65 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR3/CH0/D1/T_AMB OK 59 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR3/CH1/D0/T_AMB OK 68 -10 -8 -5 95 100 105
/SYS/MB/CMP0/BR3/CH1/D1/T_AMB OK 54 -10 -8 -5 95 100 105
.
.
.
--------------------------------------------------------------------------------
Voltage sensors (in Volts):
--------------------------------------------------------------------------------
Sensor Status Voltage LowSoft LowWarn HighWarn HighSoft
--------------------------------------------------------------------------------
/SYS/MB/V_+3V3_STBY OK 3.34 3.13 3.17 3.53 3.60
/SYS/MB/V_+3V3_MAIN OK 3.34 3.06 3.10 3.49 3.53
/SYS/MB/V_+12V0_MAIN OK 12.22 10.90 11.15 12.85 13.10
/SYS/MB/V_VDDIO OK 1.12 1.00 1.02 1.18 1.20
/SYS/MB/V_VCORE OK 1.27 1.15 1.19 1.36 1.38
/SYS/MB/V_VMEML OK 1.84 1.64 1.68 1.93 1.98
/SYS/MB/V_VMEMR OK 1.85 1.64 1.68 1.93 1.98
/SYS/MB/V_VBAT OK 3.20 -- 2.69 -- --

--------------------------------------------------------------------------------
Power Supplies:
--------------------------------------------------------------------------------
Supply Status Fan_Fault Temp_Fault Volt_Fault Cur_Fault
--------------------------------------------------------------------------------
/SYS/PS0 OK OFF OFF OFF OFF
/SYS/PS1 OK OFF OFF OFF OFF

From Operating System:

$ prtdiag -v

System Configuration: Sun Microsystems sun4v SPARC Enterprise T5120

Temperature sensors:
------------------------------------------------------------
Location Sensor Status
------------------------------------------------------------
SYS/MB T_AMB ok
SYS/MB/CMP0/BR0/CH0/D0 T_AMB ok
SYS/MB/CMP0/BR0/CH0/D1 T_AMB ok
SYS/MB/CMP0/BR0/CH1/D0 T_AMB ok
SYS/MB/CMP0/BR0/CH1/D1 T_AMB ok
SYS/MB/CMP0/BR1/CH0/D0 T_AMB ok
SYS/MB/CMP0/BR1/CH0/D1 T_AMB ok
SYS/MB/CMP0/BR1/CH1/D0 T_AMB ok
SYS/MB/CMP0/BR1/CH1/D1 T_AMB ok
SYS/MB/CMP0/BR2/CH0/D0 T_AMB ok
SYS/MB/CMP0/BR2/CH0/D1 T_AMB ok
SYS/MB/CMP0/BR2/CH1/D0 T_AMB ok
SYS/MB/CMP0/BR2/CH1/D1 T_AMB ok
SYS/MB/CMP0/BR3/CH0/D0 T_AMB ok
SYS/MB/CMP0/BR3/CH0/D1 T_AMB ok
SYS/MB/CMP0/BR3/CH1/D0 T_AMB ok
SYS/MB/CMP0/BR3/CH1/D1 T_AMB ok
SYS/MB/CMP0 T_TCORE ok
SYS/MB/CMP0 T_BCORE ok
.
.
.
Voltage sensors:
------------------------------------------------------------
Location Sensor Status
------------------------------------------------------------
SYS/MB V_VMEML ok
SYS/MB V_VMEMR ok
SYS/MB V_+3V3_STBY ok
SYS/MB V_VCORE ok
SYS/MB V_+3V3_MAIN ok
SYS/MB V_VDDIO ok
SYS/MB V_+12V0_MAIN ok
SYS/MB V_VBAT ok
SYS/PS0 V_IN_MAIN ok
SYS/PS0 V_OUT_MAIN ok
SYS/PS1 V_IN_MAIN ok
SYS/PS1 V_OUT_MAIN ok

Voltage indicators:
------------------------------------------------------------
Location Indicator Condition
------------------------------------------------------------
SYS/MB VCORE_POK ok
SYS/MB VMEML_POK ok
SYS/MB VMEMR_POK ok
SYS/PS0 AC_POK ok
SYS/PS0 DC_POK ok
SYS/PS0 VOLT_FAULT ok
SYS/PS1 AC_POK ok
SYS/PS1 DC_POK ok
SYS/PS1 VOLT_FAULT ok

Solution

Please acquire a fresh copy of the Firmware patch and follow the steps in the install.info file to install the Firmware anew.*

Note: An "install.info" guide is typically included in the downloaded Firmware patch *.zip file, from which it can be extracted, for the step-by-step firmware installation process.

*If after implementing the above suggested solution the issue remains, please open a new Oracle Service Request with the latest gathered Explorer for further analysis.

TIP:
Although the issue described in this document may At First appear to be a hardware issue, the following helpful troubleshooting steps should be considered (Prior to any hardware replacements) to help determine if an Incomplete Firmware update is the cause:
1- Determine if the last maintenance done on such a machine was indeed a Firmware update
2- Establish whether or not any power-related events occurred during the update process
3- Consider the aspects of acquiring the Firmware patch (source, destination, transport over network, network activity/security, etc.)
4- Review console logs for unnoticed errors during the patch installation
5- Decide whether or not the installation process (as given in the "install.info" file of the FW patch *.zip bundle) was followed correctly

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