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NFSv4.2 slowness for copy operation

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • NFS v4.1 or NFS v4.2
  • Parallel NFS (pNFS)

Issue

  • Copying files takes approximately 6 minutes:

$ date ; cp file.txt /path/to/folder/ ; date
Wed Jan 21 14:06:49 CET 2026
Wed Jan 21 14:12:51 CET 2026

  • No issue with NFS3
  • Filer trace shows no slowness :

kb.jpg

  • No latency issues seen from the performance archives.
  • No errors in EMS

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