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What does the nblade.nfs.eventBasedExport_enabled boot argument do?

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Applies to

ONTAP 9.14.1 and later

Answer

The bootarg nblade.nfs.eventBasedExport_enabled controls how ONTAP handles updates to NFS export rules — specifically, the method to refresh its internal cache of export policies.

When True (Event-Based Rewinds):

  • The system reacts immediately to changes in export policies or qtree rules.
  • This is designed for environments with frequent and dynamic changes, causing updates to be faster and more efficient under these conditions.
  • Introduced in ONTAP 9.14.1 and extended in 9.16.1 to support qtrees.

When False (Timer-Based Rewinds):

  • The system refreshes export rules in intervals
  • This can be more stable in environments where export rules don’t change often.
  • Disabling it can help avoid NFS timeouts or delays in some scenarios.

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