Node unexpected reboots following "ADR timeout" event

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Category:: aff-series

Specialty:: hw

Last Updated:

Applies to

FAS27x0
AFF A220
AFF A300
ONTAP 9.7
ONTAP 9.8
ONTAP 9.9

Issue

Node experience an unexpected reboot.

CLTFLT:HA Group Notification from node-02 (CONTROLLER TAKEOVER COMPLETE AUTOMATIC) ALERT

In Baseboard Management Controller (BMC) logs seen (ADR Timeout):

Record 1127: Thu Oct 07 04:46:54.280000 2021 [IPMI.notice]: 003a | 02 | EVT: 015201a4 | P5V | Assertion Event, "Lower Critical going low " | Reading: 0.026 | Threshold: 4.264
Record 1128: Thu Oct 07 04:46:55.670000 2021 [BMC.critical]: Filer Reboots
Record 1129: Thu Oct 07 04:46:55.690000 2021 [Trap Event.critical]: hwassist abnormal_reboot (28)
Record 1130: Thu Oct 07 04:46:55.780000 2021 [Trap Event.critical]: SNMP abnormal_reboot (28)
Record 1131: Thu Oct 07 04:46:57.000000 2021 [SysFW.notice]: ADR Timeout
Record 1132: Thu Oct 07 04:46:57.000000 2021 [SysFW.notice]: ADR Timeout