System shuts down due to battery full charge capacity low false-positive alerts
Applies to
- AFF A800, AFF C800, ASA A800, ASA C800
- BMC firmware 10.6
- AFF A300, AFF A200, FAS8200, FAS2650, FAS2620
- SP firmware 5.6 or newer
- AFF A220, AFF A150, AFF C190, ASA A150, FAS2750, FAS2720
- BMC firmware 11.3 or newer
Issue
- Battery starts a learning cycle as seen in SP/BMC
events allorSP-LATEST-SYSTEM-EVENT-LOGAutoSupport section:
Record 351: Wed Jan 05 12:00:13.540000 2022 [IPMI.notice]: 011e | 02 | EVT: 0301ffff | Bat_Lrn_Active | Assertion Event, "State Asserted"
- Subsequently, an AutoSupport is generated because the battery's remaining capacity drops below 30%:
HA Group Notification (BATTERY_LOW) ALERT
- EMS Log reports a critical warning stating that NVRAM battery level is dangerously low:
[node_name: statd: monitor.nvramLowBattery:EMERGENCY]: NVRAM battery is dangerously low.
- Battery learning cycle completes as seen in SP/BMC
events allorSP-LATEST-SYSTEM-EVENT-LOGAutoSupport section:
Record 356: Wed Jan 05 18:31:55.700000 2022 [IPMI.notice]: 0123 | 02 | EVT: 0300ffff | Bat_Lrn_Active | Assertion Event, "State Deasserted"
- About 20 minutes after, system shuts down due to battery capacity reaching a critical level as shown in
EMSorBMC/SP console logs:
[node_name:monitor.shutdown.emergency:EMERGENCY]: Emergency shutdown: Environmental Reason Shutdown (Battery PCT capacity critical)[node_name: env_mgr: nvmem.battery.fccLowCrit:EMERGENCY]: The NVMEM battery full-charge capacity is critically low (30 ). To prevent data loss, the system will shut down in 20 minutes.