Coda File System

Re: readonly replicated root volume

From: Jan Harkes <jaharkes_at_cs.cmu.edu>
Date: Sun, 3 Jul 2005 16:27:11 -0400
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
> walkthrough for dynamically adding a volume replica I think I've made
> this work. Have I done it the right way? I'll post the correct method
> to the wiki.

No, this is not correct. The cloned/restored volumes are considered
readonly and will internally update a single dataversion stamp instead
of the version vector and they won't log operations for resolution.
(readonly volumes believe they will never be updated, only replaced by
another backup or restored volume)

Some of the visible effects are, they don't generate callbacks and you
are likely to see more conflicts in the volume because server-server
resolution can only handle a few trivial cases.

Jan
Received on 2005-07-03 16:29:24