AFF A400 hangs during ONTAP upgrade
Applies to
- ONTAP 9
- AFF A400
- Automated non-disruptive upgrade (ANDU)
Issue
Multiple AFF-A400 systems hang during an ONTAP upgrade (ANDU). A panic message similar to the following is seen on the serial console:
PANIC: watchdog nmi on cpu 17, hang cpu is 16 in process idle: cpu17 on release 9.8P12 (C) on ...
In the BMC system event log, the following is seen:
453 | 05/26/2023 | 17:18:17 | Watchdog 2 #0xb1 | Timer interrupt (NMI/SMS/OS) | Asserted 454 | 05/26/2023 | 17:18:17 | Critical Interrupt #0xb0 | NMI/Diag Interrupt | Asserted