Regarding a filesystem mounted on multiple boxes, check out DFS; there's
a spec available from the Open Group in the UK for $58.00:
http://www.opengroup.org/pubs/catalog.saved/p409.htm
If you allow multiple R/W mounts, it's certainly not trivial. As Kirk said,
you need a strong coherency mechanism; DFS uses a token mechanism invented,
AFAIK, by Locus Computing Corporation.
I work on the former Locus clustering stuff (for Compaq, these days), so I
can't really contribute, but I know there are white papers and other docs out
there.
--
Frank Mayhar [EMAIL PROTECTED]
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