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Intermittent 0x80070032 errors when copying files to a NetApp CIFS share

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Category:
ontap-9
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NAS
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Applies to

  • ONTAP 9.15.1P11 (and possibly other ONTAP 9.x versions)
  • NetApp AFF and FAS platforms
  • CIFS/SMB shares
  • Windows clients copying files to NetApp shares

Issue

Windows clients intermittently fail to copy certain files to a NetApp CIFS share with the error:

An unexpected error is keeping you from copying the file. If you continue to receive this error, you can use the error code to search for help with this problem.
Error Ox80070032: The request is not supported

  • Some files copy successfully, others fail at random times
  • The same file may succeed once and fail later
  • Packet traces show Windows sending an EA buffer named $KERNEL.PURGE.SEC.FILEHASH in the SMB2 create request
  • ONTAP responds with STATUS_NOT_SUPPORTED (0xc00000bb).


Example: Packet trace snippet
SMB2 CreateRequest
  ChainElement: SMB2_CREATE_EA_BUFFER "ExtA"
  EAName: $KERNEL.PURGE.SEC.FILEHASH
SMB2 CreateResponse, Error: STATUS_NOT_SUPPORTED (0xc00000bb)

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