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CHW-3320: AFF A20 node experiences Environmental shutdown due to unreadable battery sensors

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ontap-9
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Issue

  • Unexpected takeover event
  • Environmental shutdown caused by "unreadable" battery sensors.
  • ONTAP event messages. Example:

... [NODE-01: env_mgr: callhome.battery.failure:EMERGENCY]: Call home for BATTERY ('Bat Temp' unreadable) CRITICAL.
... [NODE-01: env_mgr: callhome.battery.failure:EMERGENCY]: Call home for BATTERY ('Bat Volt' unreadable) CRITICAL.
... [NODE-01: env_mgr: callhome.battery.failure:EMERGENCY]: Call home for BATTERY ('Bat Curr' unreadable) CRITICAL.
... [NODE-01: env_mgr: callhome.battery.failure:EMERGENCY]: Call home for BATTERY ('Bat Full Cap' unreadable) CRITICAL.
... [NODE-01: env_mgr: callhome.battery.failure:EMERGENCY]: Call home for BATTERY ('Bat Charge Curr' unreadable) CRITICAL.
... [NODE-01: env_mgr: callhome.battery.failure:EMERGENCY]: Call home for BATTERY ('Bat Charge Volt' unreadable) CRITICAL.
... [NODE-01: env_mgr: callhome.battery.failure:EMERGENCY]: Call home for BATTERY ('Bat Design Cap' unreadable) CRITICAL.
... [NODE-01: env_mgr: callhome.battery.failure:EMERGENCY]: Call home for BATTERY ('Bat Dstg Cycles' unreadable) CRITICAL.
... [NODE-01: env_mgr: monitor.shutdown.emergency:EMERGENCY]: Emergency shutdown: Environmental Reason Shutdown (Battery voltage unreadable for 5 mins)
In BMC logs it can also be seen:
 [IPMI.emergency]: env_mgr triggers OS halt:Battery voltage unreadable for 5 mins
 [IPMI.emergency]: env_mgr triggers OS halt:Battery current unreadable for 5 mins
 [Controller.notice]: Appliance user command halt.
 [IPMI Event.critical]: System power down

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