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NFSv4.2 “Permission Denied” When Using ONTAP-NAS-Economy Driver with Trident

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Applies to

  • NetApp ONTAP 9.16.1P8 and later
  • Trident ONTAP-NAS-Economy driver
  • NFSv4.2 protocol
  • Kubernetes/OpenShift environments
  • AFF-A250 and similar ONTAP systems

Issue

When using the Trident ONTAP-NAS-Economy driver with NFSv4.2, attempts to write to provisioned volumes fail with “Permission Denied” errors, even though mounting succeeds. This issue is not seen with NFSv3, NFSv4.0, or NFSv4.1, and does not occur with the standard ONTAP-NAS driver.

Sample log output / error:

  • Application logs or client:Permission Denied

  • ONTAP sectrace output (excerpt):

    SecurityStyle: UNIX Access is denied by UNIX permissions while creating or writing the file. Access is not granted for: "Synchronize", "ReadControl", "ReadAttributes", "Execute", "ReadEA", "Write", "Read"Protocol: nfsVolume: trident_qtree_pool_trident_...UNIX-User: 65534

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