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CONTAP-334479: System Panic During ONTAP Revert on AFF A900 Systems

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ontap-9
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Issue

During an ONTAP revert to 9.16.1, the system may become unresponsive while unmounting /mroot and experience a CPU hog panic. The panic string is {}thread (notifyd) on cpu 11 hung for 4001 milliseconds in process notifyd on release devN_241016_0200 (C){}.
 

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