we have a problem , we are trying to use RedHAt linux 7.0 as a nfs server.We are trying to mount the exported directory onto a SCO openserver 5.0.5 system.Read, write access is not a problem but file locking doesnot work evenif we use no_auth_nlm or insecure_locks option.NFS mounts from SCO to linux will work . Access is not a problem (Read ,Write).But there are some API calls which fail on NFS mounted file system. To be more specific it is FCNTL API call with F_GETLK as a parameter which doesnt work.fcntl with F_SETLK seems to work.
Please retry on the 8.0 release (based on kernel 2.4). I do not think anyone remembers how 7.0 NFS worked.
Stale, closing