SOM_VG2 wrote: I was given a few NFSV4 mounts on my Linux server. I know that the file system is on VNX VG2 which I do not know much about. What I can tell from export is my server was given Root access to the file system. But when I login as root on my server and try to do chown on the NFS files or directory, I always receive 'invalid argument' error. I can do chmod with no problem. I have no access to the NFS server. Can some one tell me what I can ask my NFS support to change (or set up) so that I can do chown on my NFS mounts.

Can you provide the exact input of the chmod command you are using?  "invalid argument" suggests you have some invalid syntax (and not necessarily permissions issues).

It looks like a mapping / config problem on the client

See https://www.google.de/#q=nfsv4chowninvalid+argument

If you don’t specifically need NFSv4 I would suggest to just use NFSv3

If you think your NFSv4 config is ok then please first make sure you are running the latest VNX OE – at least 7.1.71-1

Then open a service request and be prepared to take network traces

Ask support to check knowledgebase emc292079 if its applicable