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CFBMC-5489: FAS2820 does loose e0M access and fails to boot after takeover

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ontap-9
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hw
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Issue

A FAS-2820 node is found to have lost access on its e0M port while booted in ONTAP and/or after the same node had been taken over by its partner node, it can not boot anymore with the following message on console, after which the node drops back into LOADER prompt:
Waiting for BMC ...
BMC recovered successfully after a reset from primary FW image
Personality check in progress .......................................
Personality check: BMC check timed out
Personality check: BMC response invalid
Personality check: BMC unable to communicate with shelf
CPU = 1 Processor(s) Detected.
Intel(R) Xeon(R) D-1735TR CPU @ 2.20GHz (CPU 0)
CPUID: 0x000606C1. Cores per Processor = 8
65536 MB System RAM Installed.
SATA (AHCI) Device: SR9M2S8Q480GQT52NP
NVME Device: 0X331111900329D0SAM000PM9A30001T00025000
Boot Loader version 8.1.0
Copyright (C) 2000-2003 Broadcom Corporation.
Portions Copyright (C) 2002-2023 NetApp, Inc. All Rights Reserved.
ACPI RSDP Found at 0x6f7fe014
LOADER-B>

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