Sun Microsystems, Inc.  Oracle System Handbook - ISO 7.0 May 2018 Internal/Partner Edition
   Home | Current Systems | Former STK Products | EOL Systems | Components | General Info | Search | Feedback

Asset ID: 1-72-1583772.1
Update Date:2017-09-29
Keywords:
Solution Type  Problem Resolution Sure

Solution  1583772.1 :   T5240 systems show warning status for SYS/PSx on V_IN_MAIN sensor in prtdiag output and get threshold SC Alerts  

Related Items 
    

  • Sun SPARC Enterprise T5140 Server
    •  
  • Sun SPARC Enterprise T5240 Server
    •  
Related Categories 
    

  • PLA-Support>Sun Systems>SPARC>CMT>SN-SPARC: T5xx0
    •  






In this Document


Symptoms


Cause


Solution


References

Created from <SR 3-7793357361>


Applies to:  

Sun SPARC Enterprise T5240 Server - Version Not Applicable to Not Applicable [Release N/A]
Sun SPARC Enterprise T5140 Server - Version Not Applicable to Not Applicable [Release N/A]
Information in this document applies to any platform.



Symptoms


Some T5x40 servers may experience SC Alert being logged in /var/adm/messages referring to low warning threshold being reached for V_IN_MAIN sensor on Power Supplies


May 12 04:11:26 hostname SC Alert: [ID 166851 daemon.error] Chassis | major: V_IN_MAIN at /SYS/PS1 has reached low warning threshold.
May 12 04:11:26 hostname SC Alert: [ID 935760 daemon.error] Chassis | major: V_IN_MAIN at /SYS/PS0 has reached low warning threshold.
Apr 10 09:08:20 hostname SC Alert: [ID 166851 daemon.error] Chassis | major: V_IN_MAIN at /SYS/PS1 has reached low warning threshold.
Apr 10 09:08:20 hostname SC Alert: [ID 935760 daemon.error] Chassis | major: V_IN_MAIN at /SYS/PS0 has reached low warning threshold.
Jul  6 14:53:11 hostname SC Alert: [ID 166851 daemon.error] Chassis | major: V_IN_MAIN at /SYS/PS1 has reached low warning threshold.
Jul  6 14:53:11 hostname SC Alert: [ID 935760 daemon.error] Chassis | major: V_IN_MAIN at /SYS/PS0 has reached low warning threshold.


The status of V_IN_MAIN sensor for the Power Supply in 'prtdiag' output is set to 'warning (value)'


Voltage sensors:
----------------------------------------------------------------
Location                           Sensor             Status    
----------------------------------------------------------------
SYS/MB                             V_+3V3_STBY        ok
SYS/MB                             V_+3V3_MAIN        ok
SYS/MB                             V_+12V0_MAIN       ok
SYS/MB                             V_VDDIO            ok
SYS/MB                             V_VCOREL           ok
SYS/MB                             V_VCORER           ok
SYS/MB                             V_+1V5_IO          ok
SYS/MB                             V_VMEML            ok
SYS/MB                             V_VMEMR            ok
SYS/MB                             V_VBAT             ok
SYS/PS0                            V_IN_MAIN          warning (100.200volts )
SYS/PS0                            V_OUT_MAIN         ok
SYS/PS1                            V_IN_MAIN          warning (100.200volts )
SYS/PS1                            V_OUT_MAIN         ok


You can also see error similar to the ones below in 'show /SP/logs/event/list' output in ILOM


10538  Fri Jul 23 05:54:52 2013  Chassis   Log       major
       V_IN_MAIN at /SYS/PS0 has reached low warning threshold.
10537  Fri Jul 23 05:54:48 2013  Chassis   Log       major
       Current configuration does not support Power Supply redundancy due to low AC line voltage
10536  Fri Jul 23 05:54:48 2013  Chassis   Log       major
       V_IN_MAIN at /SYS/PS1 has reached low warning threshold.
10526  Fri Jul 23 05:53:42 2013  IPMI      Log       minor
       ID = 2567 : 07/23/2013 : 05:53:36 : Voltage : /PS0/V_IN_MAIN : Lower Non-critical going low  : reading 103.20 <= threshold 163.20 Volts
10520  Fri Jul 23 05:53:41 2013  IPMI      Log       minor
       ID = 2561 : 07/23/2013 : 05:53:31 : Voltage : /PS1/V_IN_MAIN : Lower Non-critical going low  : reading 103.20 <= threshold 163.20 Volts


Cause


The issue is caused by defect in firmware where the high-line power requirement is enabled, however the low-line power should be allowed.


-> show /SYS/PS0/V_IN_MAIN -o table
Target              | Property               | Value
--------------------+------------------------+---------------------------------
/SYS/PS0/V_IN_MAIN  | type                   | Voltage
/SYS/PS0/V_IN_MAIN  | ipmi_name              | /PS0/V_IN_MAIN
/SYS/PS0/V_IN_MAIN  | class                  | Threshold Sensor
/SYS/PS0/V_IN_MAIN  | value                  | 98.400 Volts
/SYS/PS0/V_IN_MAIN  | upper_nonrecov_thresho | N/A
                    | ld                     |
/SYS/PS0/V_IN_MAIN  | upper_critical_thresho | N/A
                    | ld                     |
/SYS/PS0/V_IN_MAIN  | upper_noncritical_thre | N/A
                    | shold                  |
/SYS/PS0/V_IN_MAIN  | lower_noncritical_thre | 163.200 Volts
                    | shold                  |
/SYS/PS0/V_IN_MAIN  | lower_critical_thresho | N/A
                    | ld                     |
/SYS/PS0/V_IN_MAIN  | lower_nonrecov_thresho | N/A
                    | ld                     |
/SYS/PS0/V_IN_MAIN  | alarm_status           | warning


Solution


The fix for this is implemented in firmware 7.3.0 hence the solution is to upgrade the firmware at least to the revision mentioned. 
It is always best to keep the system up-to-date (not only at the OS level, but also at the hardware's FW level), therefore upgrade the latest version of firmware is always highly recommended.


References
 <BUG:15658802> - SUNBT6972360-TRUNK WRONG VALUE OF /SYS/PSX/V_IN_MAIN LOWER_NONCRITICAL_THRESHOLD



Attachments

This solution has no attachment


















       

Copyright © 2018 Oracle, Inc.  All rights reserved.

 Feedback