Thanks Ivan and Jan for the replies. I will add this to the errata on the 
Wiki.

Al

On Friday 01 July 2005 01:32, Ivan Popov wrote:
> Alastair,
>
> On Thu, Jun 30, 2005 at 08:13:48PM +0100, Alastair Johnson wrote:
> > Based on a combination of the manual at
> > http://www.coda.cs.cmu.edu/doc/html/manual-10.html#ss10.6 and the wiki
>
> unfortunately, the information present in that document is greatly
> obsoleted, it reflects the situation before realms support in Coda.
>
> I don't think there is any reason to use readonly replication now.
>
> ----------------------------------
>  ... availability of volumes which cannot be read-write replicated.
> The most important example of such a volume is the root of the Coda file
> system ----------------------------------
>
> Nowadays there is no "root of the Coda file system", it is imitated
> separately on each client.
>
> The root volume of a _realm_ can be safely replicated, though of course
> you should avoid [conflicting] updates on that volume.
> In the unlikely (given a reasonable administration) event of such a
> conflict you can repair the volume as well as any other one, I think.
> In fact, you could replace and repair the root volume even before realms,
> with additional manual work.
>
> I can not tell whether your procedure is right, but I think
> the whole idea behind readonly replication is an artifact of AFS2
> and not adequate for Coda.
>
> My 2c
> --
> Ivan