Hung programs

If programs hang during file-related work, the NFS server could have stopped.

In this case, the following error message may be displayed:

NFS  server  hostname  not  responding,  still  trying

The NFS server (hostname) is down. This indicates a problem with the NFS server, the network connection, or the NIS server.

Check the servers from which you have mounted file systems if your machine hangs completely. If one or more of them is down, do not be concerned. When the server comes back up, your programs continue automatically. No files are destroyed.

If a soft-mounted server dies, other work is not affected. Programs that time out while trying to access soft-mounted remote files fail with the errno message, but you are still able to access your other file systems.

If all servers are running, determine whether others who are using the same servers are having trouble. More than one machine having service problems indicates a problem with the nfsd daemons on the server. In this case, log in to the server and run the ps command to see if the nfsd daemon is running and accumulating CPU time. If not, you might be able to stop and then restart the nfsd daemon. If this does not work, you have to restart the server.

Check your network connection and the connection of the server if other systems seem to be up and running.