Hi, Whith NFSv4 one needs the rpc.idmapd daemon to map usernames to numeric ID's, since NFSv4 uses strings containing usernames instead of numeric user ID's like versions 2 and 3 of the NFS protocol. This rpc.idmapd has to be started on both the NFS server and the NFS client. Gentoo currently only starts rpc.idmapd on the NFS server, with the /etc/init.d/nfs initscript. On the client however, rpc.idmapd isn't started automatically. Perhaps the /etc/init.d/nfsmount initscript is a good place to do this. Kind regards, Erik Logtenberg.
*** This bug has been marked as a duplicate of 101624 ***