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Troubleshooting and tuning NFS

Clearing mount command hang-ups

The mount command hangs indefinitely if there are no nfsd daemons running on the NFS server. This happens when there is no /etc/dfs/dfstab file on the server when it enters init state 3. To clear the problem, restart the nfsd daemon by executing the following command:

/usr/lib/nfs/nfsd

If you are mounting resources from a fast server, it is advised that you use the NFS-specific mount options rsize and wsize. These options should be set to rsize=1024 and wsize=1024 because fast servers cause data overruns on the ethernet driver on slow client machines. One symptom of this problem is the following message on the client machine's console:

   RPC: Timed out.
Another symptom may be that the client machine appears to be hung, with the following message on the client machine console:
   NFS server hostname not responding, still trying

© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 22 April 2004