I think I found the solution here:

http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Debian_Etch_Server_And_Diskless_EMC2_Thin_Clients

portmap needed to be installed(?). I am now able to run EMC with an NFS
mounted config.

Kirk
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
On Sat, 2007-12-08 at 13:52 -0800, Kirk Wallace wrote:
> On Sat, 2007-12-08 at 13:27 -0800, Kirk Wallace wrote:
> > As part of running AXIS on a remote PC, I am trying to run the standard
> > EMC 2.2.2 with an NFS mount from my file server to /home/kwallace/emc2.
> > As kwallace, I can read and write to the emc2 directory without any
> > problems. I emptied the directory, invoked EMC and selected sim/axis
> > from the local sample directory. EMC then asked if I wanted to copy the
> > configuration to my home. I agreed and EMC created the proper
> > directories and copied the files. So now I have the sim/axis
> > configuration on the NFS mounted directory. The configuration screen
> > then disappears and EMC tries to start. After a few minutes I get this
> > error report:
> > 
> > http://www.wallacecompany.com/machine_shop/EMC2/remote_axis_error.txt
> > 
> > I suspect that parts of EMC run as root and root can't access the NFS
> > mount, but when I "sudo su -" and try to access files
> > in /home/kwallace/emc2, I have no problem. 
> 
> > When I try to access NFS
> > mounts from my Fedora system I get "permission denied". 
> 
> I lied here. I can access the emc2 mount from my Fedora box as root. I
> think because I don't have root squash active for emc2 in exports.
> 
> > Any ideas?
> > 


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