Use the nfsstat command with the –m option to display the current NFS information. The name of the current server is printed after "currserver=".
For example:
$ nfsstat -m /usr/local from bee,wasp:/export/share/local Flags: vers=3,proto=tcp,sec=sys,hard,intr,llock,link,symlink, acl,rsize=32768,wsize=32678,retrans=5 Failover: noresponse=0, failover=0, remap=0, currserver=bee