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How does name-mapping work for NFS clients accessing UNIX security style resources?

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Applies to

  • ONTAP 9
  • UNIX
  • NFS
  • AUTH_SYS

Answer

  • The client will send the UID and GID(s) in the RPC header for both NFSv3 and NFSv4 operations.
  • The filer will grant/deny access based on the UID and GID(s) sent in the RPC header of the NFS operation.

Note: There is no user mapping that takes place during this process. ONTAP does not need to map the incoming user to a Windows user in order for an NFS client to perform operations against a UNIX security style resource.

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