Re: [9fans] multiple venti servers

["Francisco J Ballesteros" <nemo@lsub.org>]

We start the second venti server (the backup) just to update its
arenas with those
of the primary one. Also, we format a fossil on the backup machine so
we could boot
it upon failures of the primary.

All clients write to the primary file server (fossil) which has just
one venti on its own
machine. This is the venti backed up to our secondary venti (once per night).

On 8/30/06, William Josephson <jkw@eecs.harvard.edu> wrote:
> On Wed, Aug 30, 2006 at 09:01:00AM -0700, Tharaneedharan Vilwanathan wrote:
> > If I am right, one problem with this approach is it becomes tricky
> > when both venti servers have updates but yet to be sync'ed. And, in
> > particular, when there are identical data backed up (say, I downloaded
> > a CD image in two machines and backed up in these two servers), it
> > leaves two copies. It may be safe but it does leave two copies.
>
> Writes presumably only go to the master.
>
>