NFS mounts over other files

[Bill Shirley]

Question:
	I am mounting a filesystem using NFS (from one Sun 4 SPARCstation
 to another).  I know that if I mount it onto a directory with files in it,
 the files become unavailable.  Is it a bad idea to do this or not?  
 Specifically, I want /usr/lib/X11 files to be contained on one machine
 (there is a lot of font info that takes up space).  But if the server or 
 network is down, I want the others to be able to startup X (and for that
 they need minimal font files, rgb files, ...).  I already
 have put important executables (X (server), xterm, ...) on each machine,
 but have the frills on the server (oclock, xcal, ...).

 I have RTFM, but failed to find a mention of "mounting over" files.


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