im getting the same issue....
previously server was 10.04, and clients 10.10.
after upgrade of server to 10.10, both had uid/gid problems.
I have fixed it on one client machine 10.10 by setting the client mount options to include ...nfsvers=3
but on another client 10.10 machine, both patched yesterday, the nfsvers option is not recognised and fails...mounting nfs4 works, but with broken uid/gids...
mount.nfs4 is the same on both machines...
the working/successful client is 10.10 desktop...and the failing version is a 10.10 server..
im getting the same issue....
previously server was 10.04, and clients 10.10.
after upgrade of server to 10.10, both had uid/gid problems.
I have fixed it on one client machine 10.10 by setting the client mount options to include ...nfsvers=3
but on another client 10.10 machine, both patched yesterday, the nfsvers option is not recognised and fails...mounting nfs4 works, but with broken uid/gids...
mount.nfs4 is the same on both machines...
the working/successful client is 10.10 desktop...and the failing version is a 10.10 server..
very strange