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NFS client fails to detect new files created by different client or is delayed in showing up

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ontap-9
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nas
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Applies to

  • ONTAP 9
  • NFS

Issue

  • Clients are not seeing files written by other clients immediately after they are written.
  • Client host1 creates a file in a shared directory
  • host1 can be NFS or CIFS
  • NFS Client host2 views the directory, but the new file is not listed

Example:

user@host2:~/vol1$ ls -l new_file1
ls: cannot access 'new_file1': No such file or directory

  • Files are immediately visible if export is mounted on the client with noac:
  1. unmount the NFS export on host2
  2. mount the NFS export with the noac option enabled
    • This disables attribute caching on the client

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