Coda File System

Re: Problems with replication on two servers.

From: <>
Date: Wed, 24 Jun 2009 12:16:06 -0400
Hi Marc,

On Wed, Jun 24, 2009 at 03:13:57PM +0200, Marc SCHLINGER wrote:
> Given that we have two servers,
> Can a client modify a volume, send the information to one server he can 
> join, and have the server keeps the differents replicas of this volume 
> up-to-date, whithout the client connecting to or warning the 2nd server?

No, not without _some_ client having contact to _both_ servers
and accessing the modified file.

Then the client notices that the two copies of the file are not
congruent (there are so called version vectors which make it possible
to detect such a situation) and tells the servers to synchronise the file,
which they do.

Then and only then both file replicas become up-to-date.

Hope this helps.

Received on 2009-06-24 13:02:29