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NFS mount results in "vmount: operation not permitted" error

Troubleshooting


Problem

Attempts to mount a remote file system from a Linux NFS server results in the error "vmount: operation not permitted".

Symptom

Unable to mount the remote file system.

Example:

root@lpar3:/ # mount 10.5.0.5:/repository /mnt
mount: 1831-008 giving up on:
10.5.0.5:/repository
vmount: Operation not permitted.

Cause

Sometimes Linux NFS servers will do port checking and require that the NFS client use a reserved port.

Environment

AIX versions 4.x and 5.x.

Resolving The Problem

Use a reserved port in the mount command:

Example:

root@lpar3:/ # nfso -o nfs_use_reserved_ports=1
Setting nfs_use_reserved_ports to 1            
root@lpar3:/ # mount 10.5.0.5:/repository /mnt

Note: To make this setting permanent, use the nfso -p switch or add it to /etc/rc.local.

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Document Information

Modified date:
17 June 2018

UID

swg21619817

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