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NFSv4 mount fails on FlexCache volume

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ontap-9
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nas
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Applies to

  • ONTAP 9.10.1
  • NFSv4
  • FlexCache volume

Issue

  • NFSv4 mount fails on FlexCache volume with access denied error on the client
root@linux# mount -t nfs -o vers=4.0 NFSServer:/flexcachevol/ /mnt/flexcachevol
mount.nfs4: access denied by server while mountingNFSServer:/flexcachevol/
  • NFSv3 can mount successfully
  • EMS shows Nblade.flexCacheVolumeAccess
Fri Jul 21 13:22:33 +0200 [node01: kernel: Nblade.flexCacheVolumeAccess:error]: Attempt to access FlexCache volume with MSID -213122234 via UnsupportedNFSv4 denied.
  • Packet trace shows ONTAP returns NFS4ERR_ACCESS to the client's GETATTR request of the original volume filehandles.

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