Unable to mount volumes with message "Old shadow file format found. Load "NFSGYMIG.NLM [<ShadowVolume:>]" to migrate the shadow files."

Problem: The format of Attribute Shadow file has changed.
Explanation: Any existing shadow files in the system must be migrated to the new format before using NFS Gateway.
Action: For details on the usage of migration utility, refer Section 3.0, Migrating NFS Gateway Shadow Files.