[Dovecot] Best Cluster Storage

Henrique Fernandes sf.rique at gmail.com
Thu Jan 27 03:27:34 EET 2011


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
>


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