Coda File System

Re: Replicated servers

From: LEE, Yui-wah <>
Date: Sat, 5 Jun 1999 11:56:16 -0400 (EDT)
radha krishna wrote:
> On Sat, 5 Jun 1999, _Oliver,.Thuns: wrote:
> > >It also supports replicated servers, which are 
> > >aimed at providing higher availability to clients.
> > 
> > You could also replicate servers with AFS, but only read-only (and one
> > read-write). Could coda provide replicated servers with write access?
> yes, u could. coda assumes that write-write conflicts are rare(mostly
> true) and proceeds, in case there are conflicts u will have to manually
> resolve the confilcts.

Some conflicts are even automatically resolved (especially those
involving directory entries).  Kumar's PhD thesis [1] in particular
addresses how to handle conflicts due of replicated read/write
servers.  The thesis is also downloadable from the coda web site. 
(, click "research", then documents for "coda", 
and then look it up in the section "PhD theses")

-- Clement

[1]    Kumar, P.
       Mitgating the Effects of Optimistic Replication in a 
       Distributed File System,
       PhD Thesis,
       School of Computer Science, Carnegie Mellon University
       Dec. 1994, CMU-CS-94-215
Received on 1999-06-05 11:56:38