does retrains have any effect with hard? this is what man nfs says:

If neither option is specified (or if the hard option is specified), NFS requests are retried indefinitely. If the soft option is specified, then the NFS client fails an NFS request after retrans retransmissions have been sent, causing the NFS client to return an error to the calling application.

also, do you know what can I do with CIFS/SMB? I have most of my shares through samba :/