Starting and Stopping NFS Service
You can restart nfs using command “service nfs restart” in linux. The command could create problems sometimes. A better way to restart nfs and related service is :
Stopping NFS Services
service nfslock stop service nfs stop service portmap stop umount /proc/fs/nfsd
**Starting NFS Services **
service portmap start service nfs start service nfslock start mount -t nfsd /proc/fs/nfsd