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NetApp Knowledge Base

How to Enable NFS Extended Groups in Data ONTAP operating in 7-Mode

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Category:
data-ontap-7
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nfs
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Applies to

  • Data ONTAP operating in 7-Mode NFS

Description

While Data ONTAP operating in 7-Mode supports internally a default of 32 groups in unix credentials, there is a well known limitation in the number of group that can be present in an RPC request that uses the AUTH_SYS authentication flavour.

The specification limits the maximum number of groups that can be present in this header to 16.

Due to that, an NFS client that uses AUTH_SYS authentication will truncate the list of groups sent in each request to 16. If an access request to a file/folder depends on one of the truncated groups it will be denied.

 

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