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AIX client cannot NFS mount SUSE Linux export

This document (3744628) is provided subject to the disclaimer at the end of this document.

Environment

Novell Open Enterprise Server (Linux based)
Novell SUSE Linux Enterprise Desktop 10
Novell SUSE Linux Enterprise Server 10
Novell SUSE Linux Enterprise Server 9
Novell SUSE Linux Enterprise Server 8
Novell SUSE Linux Professional 9.2
IBM AIX 4.x
IBM AIX 5.x

Situation

And AIX client is trying to NFS a SUSE Linux export. When trying to mount, it gets the error:
vmount: operation not permitted
LAN traces show that the mount request is actually succeeding. However, it is immediately followed up a 'Get FileSystem Info" call (procedure 19), which is failing with status 1, aka "not owner," aka "NFS3ERR_PERM". This normally means that the requester does not have permission to make the request. However, permissions are 777 and the AIX client is requesting as root, and has root access (no_root_squash).

Resolution

AIX by default will allow and use high port numbers for NFS communication. Some systems, including Linux, reject this. Configure AIX to use the reserved ports for NFS communication with the following command:
nfso -p -o nfs_use_reserved_ports=1
This will take effect immediately, and also be written to the AIX system's permanent configuration.

Disclaimer

This Support Knowledgebase provides a valuable tool for NetIQ/Novell/SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:3744628
  • Creation Date:06-MAR-07
  • Modified Date:27-APR-12
    • SUSESUSE Linux Enterprise Desktop
      SUSE Linux Enterprise Server

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