[Dovecot] Best Cluster Storage

[Henrique Fernandes]

Ldirector and IPVS can "sticky" same ip to same server, so the ocfs2 cache
still good.

We are trying to saparete the DLM network to ssee any performance issue!


[]'sf.rique


On Wed, Jan 26, 2011 at 6:42 PM, Stan Hoeppner <stan at hardwarefreak.com>wrote:

> Luben Karavelov put forth on 1/26/2011 1:21 PM:
>
> > Finaly we scrapped the ocfs2 setup and moved to less advanced setup:
> > We created distinct volumes for every worker on the SAN, formated it with
> with
> > XFS. The volumes got mounted on different mountpoints on workers. We
> setup a
> > Pacemaker as cluster manager on the workers, so if worker dies its volume
> > gets mounted on another worker and its service IP is brought up there.
> >
> > As a result we are using a fraction of the IO compared with OCFS, the
> wait time
> > on the workers dropped significantly, the service got better.
>
> That's obviously not a "perfectly" load balanced system, but it is an
> intriguing
> solution nonetheless.  XFS will obviously be much faster than OCFS2.
>
> Are you using the "-o delaylog" mount option?  Are you seeing an increase
> in
> metadata performance due to it?
>
> --
> Stan
>