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CONTAP-469157: Unexpected node reboot during back-end switch firmware upgrade

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ontap-9
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metrocluster
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Issue

During back-end switch firmware update on MetroCluster IP systems, using software iWARP (AFF-A150, AFF-A220, AFF-A250), a node can experience an Out Of Quorum (OOQ) event or an unexpected reboot: 
Example: 
PANIC: Process secd unresponsive for 259 seconds in process nodewatchdog on release 9.14.1P13 (C) on Fri Feb 27 12:53:30 CET 2026 version:9.141P13: Thu May 22 18:09:40 EDT 2025
Or
Example: 
PANIC: Received PANIC packet from partner, receiving message is (Coredump and takeover initiated because Connectivity, Liveliness and Availability Monitor (CLAM) has determined this node is out of quorum.) in SK process mcc_ic_kill_pkt_handler on release 9.14.1P8 (C) on Wed Feb  5 09:42:15 UTC 2025

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