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Why ODX not working?

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Category:
ontap-9
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nas
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Applies to

  • ONTAP 9
  • SMB
  • Offloaded Data Transfer (ODX)

Answer

  • ODX is not working because the client is not using ODX.
  • Instead, the client is sending COPYCHUNK requests.
  • ONTAP does not support COPYCHUNK
  • We can see the following in a packet trace:
75 2022-06-08 11:54:32.020830 10.120.50.31 10.120.51.20 SMB2 190 Ioctl RequestFSCTL_SRV_REQUEST_RESUME_KEYFile: test.txt
76 2022-06-08 11:54:32.020915 10.120.51.20 10.120.50.31 SMB2 143 Ioctl Response,Error: STATUS_NOT_SUPPORTED <<ONTAP responds
 

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