[Re: NFS question]

Joey Raheb joeyraheb at usa.net
Fri Jul 13 10:53:53 EDT 2001


There's one more thing you can try, I don't know if this would work, but you
could try a symbolic link to the directory mounted on HEAD to NODE1.  I've
never tried it, but you could give it a shot.  Or how about creating another
directory on HEAD and linking that directory to /mnt/v1, then you might be
able to NFS that directory over to NODE1.

I guess another option would be to move the entire directory from X to HEAD,
since both computers can see and use HEAD, that would be  logical place for
the directory, and then you could just export that directory from HEAD to X
and NODE1.

Joey

"Georgia Southern Beowulf Cluster Project" <gscluster at hotmail.com> wrote:
Chris,

I've attempted the same thing before, but it simply does not work in any 
cases that I've tested.  I does make since however, because (using your 
terminology) HEAD is mounting X:/vol as /mnt/v1.  HEAD:/mnt/v1 is really  
just a blank directory if you think about it, that HEAD maps as coming from 
X:/vol.  Now, if HEAD exports /mnt/v1 to NODE1, then it is really exporting 
a blank directory (i.e. i maps X:/vol when it personally reads/writes to it, 
but it has no facility to forward this directory to NODE1, giving it a blank 
directory instead).  This may not be entirely correct, but it is an 
explanation I've found useful in thinking about such situations.  If NODE1 
absolutely needs to see X:/vol, then you can use the ip forwarding/ ip 
masquerading/ nat facilities in Linux (or your choice of OS) so that NODE1 
knows about X and can see X:/vol itself.

Thanks,

Wes Wells

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