Unable to Use NFS Under VirtualBox

Overview

NFS (v4 or v3) fails to connect to NetGear ReadyNAS from a VM running under VirtualBox.

Followed the procedure in Use NFS for Oracle Software .

Status

UNRESOLVED

Description

When GORDON was created, I wanted to mount the shared software directory using the procedure in Using NFS for Oracle Software . Unfortunately, I was unable to get the directory listing.

The following combinations were tried using this procedure:

System	Substrate	OS	OS Type	NFS Version	Successful?
PENRITH	Physical	Ubuntu 14.04 LTS	32-bit	3	Yes
PERSONAL	Xen VM	OEL 6.5	64-bit	4	Yes
COURSERA	Xen VM	OEL 6.5	64-bit	3	Yes
GORDON	VirtualBox	OEL 7.0	64-bit	4	No
GORDON	VirtualBox	OEL 7.0	64-bit	3	No
GORDON	VirtualBox	OEL 6.5	64-bit	4	No
GORDON	VirtualBox	OEL 6.5	64-bit	3	No
REDFERN1	Xen VM	OEL 7.0	64-bit	4	Yes
REDFERN2	Xen VM	OEL 7.0	64-bit	4	Yes

Procedure

The following commands work for GORDON :


                     mount /opt/share/Software
                     

                     umount /opt/share/Software

But the following command fails to return:


                     ls /opt/share/Software