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CONTAP-204371: System Panic During FabricPool Cloud Block Migration

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Issue

A system may panic while migrating a packed block from cloud storage when a FabricPool volume contains a block beyond the volume’s size. The issue can occur with clone volumes that use PVBN sharing when packed blocks from a larger parent volume have been tiered to the cloud.
The panic string is: wafl*load*buf: wip = 0x0xfffff83369850480, fbn = 1592670736, level = 2, last logical block = 1547350031, last physical block = 1547350031, flags = 0, in SK process wafl_exempt07

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