When our data center had a major power failure today, NFS didn't want to play nice. When trying a 'showmount -e <hostname>' from either the NFS server or a client, I'd get the following error:
RPC: Program not registered showmount: can't do exports rpc
The process to fix this was fairly straight-forward:
# killall -9 mountd # /etc/rc.d/nfsd stop # /etc/rc.d/rpcbind stop # /etc/rc.d/rpcbind start # /etc/rc.d/nfsd start Starting mountd. Starting nfsd.
All was well with the world.