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RTCバッテリ障害

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fas-systems
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環境

  • FAS / AFFプラットフォーム
  • リアルタイムクロック(RTC)コイン型電池

問題

  • ノードとシャーシの障害LEDが点灯し、以下のエラーが表示されます:

hsamcmd --fault-show-all
===============================
tag  origin  fld                    fault reason                   count  time
---- ------- ----                   -------------                   ------ -----
1   bmc    /chassis-1/controller-a          P3V3_BATT: Voltage Sensor 26 LNC         1    Wed Jun 25 10:58:10 2025
2   bmc    /chassis-1/controller-a          P3V3_BATT: Voltage Sensor 26 LCR         1    Wed Jun 25 10:58:22 2025

  • またはノードとシャーシの障害LEDが点灯しているが、障害の明確な表示がない
  • 次のEMSメッセージが生成され、バッテリに対して重大でない障害が報告される:

Tue Sep  4 15:05:29 CEST [NODE1:monitor.chassisPower.degraded:warning]: Chassis power is degraded: RTC Battery is in WARN LOW state current voltage is 2774 mV, normal low is 2800 mV

  • SP-LATEST-IPMIログにはP3.3V Battが次の条件です。

P3.3V Batt   warnlow  2660 mV    2537 mV    2695 mV    3307 mV    3447 mV   

または

P3.3V Batt    critlow   945 mV    2100 mV    2205 mV    3395 mV    3500 mV

  • SP-LATEST-SYSLOG ログに表示 rtcWarnLowPower

BMC env_mgr[1534]: Payload EMS: EMS_monitor_rtcWarnLowPower(2660 mV) 

  • BMC events allP3.3V Batt is critical lowを表示します。

BMC env_mgr[1461]: P3.3V Batt is critical low

  • BMC/SPは、次の状態P3V_BATを示しています。

Sensor Name    | Current   | Unit     | Status    | LCR     | LNC     | UNC     | UCR
-----------------+------------+------------+------------+-----------+-----------+-----------+-----------
P3V_BATT      | 2.840    | Volts    | nc      | 2.720    | 2.880    | 3.300    | 3.460
Or
P3V3_BATT     | 0.963    | Volts    | cr      | 2.100    | 2.205    | 3.395    | 3.500

 

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