Does CTDB work over WAN networks...?

Hafeez Bana hafeez.bana at gmail.com
Tue Oct 8 06:30:06 MDT 2013


Thanks Jeremy for the forewarning.


On Mon, Oct 7, 2013 at 7:50 PM, Jeremy Allison <jra at samba.org> wrote:

> On Mon, Oct 07, 2013 at 09:13:42AM +0100, Hafeez Bana wrote:
> > Hi Everyone,
> >
> > We're planning to set up a gluster network with nufa across office
> branches
> > exposed by samba. This should theoretically give one consistent view of
> the
> > file system across the world but via nufa provide fast local access
> speeds.
> >
> > A couple of  questions:
> >
> > 1) Do we need CTDB? Does placing the tdb database on the gluster system
> and
> > using vfs_Fileid obviate the need to have a CTDB?
>
> Don't do that. Almost certainly this will not work.
>
> > 2) If CTDB is needed then does CTDB work over a WAN network? I realize
> CTDB
> > was designed for scaling and transparent failover - not quite sure it was
> > designed as WAN solution
>
> No, the latency over a WAN makes this impossible.
>
> ctdb will not really work for what you want, it's
> designed for low-latency fast network connections
> (a file server in a cluster).
>
> I'd suggest using msdfs to tie the separated
> sites together instead.
>
> Jeremy
>


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