NFS4 Stale file handle

Operating Systems & Open Source Linux
1

I have two nfs4 mounts on Ubuntu. One for each of my two nases. They mount without trouble. I can create files on them from Ubuntu, I can copy files from them. However I can’t copy files between the shares. I get the error of Stale file handle. It works with nfs3 but not nfs4. The main reason I would like nfs4 is for server side copying. It seems to be a permissions issue.

Permissions on the nas are set to root id and gui ownership. I have it mapped to my account on Ubuntu (argone).

I am using Truenas.
I have seen people with similar issues and they used Autofs, which is not working. mount.nfs does not work either.

2

IIRC NFSv4 has an option to route copying operations between servers between them, without the data going through the client.

If your serves can’t or won’t do it, this might explain the problem.
You might want to look into NFS4 mount options and disable it.