"A power sensor P12V STBY in the controller module is not readable" occurs frequently on FAS8200 systems

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Category:: ontap-9

Specialty:: hw

Last Updated:

Applies to

FAS8200

Issue

The error monitor.power.unreadable occurs multiple times with the sensor P12V STBY in EMS log.

[?] Tue Jul 16 00:21:11 +0900 [node-1: env_mgr: monitor.power.unreadable:error]: A power sensor P12V STBY in the controller module is not readable. [?] Tue Jul 16 00:23:01 +0900 [node-1: env_mgr: monitor.chassisPower.ok:notice]: Chassis power is OK. [?] Tue Jul 16 00:24:24 +0900 [node-1: env_mgr: monitor.power.unreadable:error]: A power sensor P12V STBY Curr in the controller module is not readable. [?] Tue Jul 16 00:37:59 +0900 [node-1: env_mgr: monitor.chassisPower.ok:notice]: Chassis power is OK. [?] Tue Jul 16 00:39:26 +0900 [node-1: env_mgr: monitor.power.unreadable:error]: A power sensor P12V STBY Curr in the controller module is not readable. [?] Tue Jul 16 00:51:14 +0900 [node-1: env_mgr: monitor.power.unreadable:error]: A power sensor P12V Curr in the controller module is not readable. [?] Tue Jul 16 00:51:32 +0900 [node-1: env_mgr: monitor.power.unreadable:error]: A power sensor P12V STBY in the controller module is not readable. [?] Tue Jul 16 00:59:52 +0900 [node-1: env_mgr: monitor.power.unreadable:error]: A power sensor P12V Curr in the controller module is not readable. [?] Tue Jul 16 04:39:23 +0900 [node-1: env_mgr: monitor.power.unreadable:error]: A power sensor P12V STBY in the controller module is not readable. [?] Tue Jul 16 04:39:44 +0900 [node-1: env_mgr: monitor.power.unreadable:error]: A power sensor P12V STBY Curr in the controller module is not readable. [?] Tue Jul 16 04:55:59 +0900 [node-1: env_mgr: monitor.chassisPower.ok:notice]: Chassis power is OK. [?] Tue Jul 16 04:57:26 +0900 [node-1: env_mgr: monitor.power.unreadable:error]: A power sensor P12V STBY Curr in the controller module is not readable.

The SP-LATEST-SYSLOG shows reading errors with Sensor 212 and Sensor 213.

Jul 15 19:39:04 (none) : [392 WARNING][hal_api.c:356]Sensor 212 reading error Jul 15 19:39:04 (none) : [392 WARNING][hal_api.c:356]Sensor 213 reading error Jul 15 19:39:11 (none) hsam[357]: HSAM OS(0x5):cmd(2) FLD(controller):fault(Failed reading sensor: 212) Jul 15 19:39:11 (none) : [392 WARNING][hal_api.c:356]Sensor 213 reading error Jul 15 19:39:17 (none) : [392 WARNING][hal_api.c:356]Sensor 212 reading error Jul 15 19:39:17 (none) : [392 CRITICAL][Porting/platform/PDKHooks.c:647]Error while reading sensor number : 212 Jul 15 19:39:17 (none) : [392 WARNING][hal_api.c:356]Sensor 213 reading error Jul 15 19:39:24 (none) env_mgr[1109]: Payload EMS: EMS_monitor_power_unreadable(P12V STBY)

There are no issues with the P12V related sensors in PLATFORM-SENSORS.

P12V voltage normal 11904 mV 0 15810 P12V Curr current normal 7896 mA 0 21420 P12V STBY voltage normal 11904 mV 0 15810 P12V STBY Curr current normal 811 mA 0 3182

In SP-LATEST-IPMI, both P12V_STBY and P12V_STBY_Curr have an na status, and it shows Failed reading sensor: 213.

====================================== hsamcmd --fault-show-all =============================== tag origin fld fault reason count time ---- ------- ---- ------------- ------ ----- 1 0x5 /chassis-1/controller-b Failed reading sensor: 213 1 Mon Jul 15 20:04:51 2024

P12V | 11.904 | Volts | ok | 0.000 | 0.000 | 15.810 | 15.810 P12V_Curr | 7.728 | Amps | ok | 0.000 | 0.000 | 21.420 | 21.420 P12V_STBY | na | Volts | na | 0.000 | 0.000 | 15.810 | 15.810 P12V_STBY_Curr | na | Amps | na | 0.000 | 0.000 | 3.182 | 3.182