[Gluster-devel] Gluster ready for prime time with this setup?

[Michael Fincham]

Hi Nathan,

Are you planning on booting Xen VMs off GlusterFS? I've been playing with
this for about a month and come up against some issues... In short, it
seems to work fine if AFR is not involved.

-Michael

>
> Image of the setup is at:
>
> http://share.robotics.net/gluster.png
>
> The setup is as follows; eight servers each in NYC and LAX datacenters.
> I have not decided on RIAD 5 or 6, but each server has 8 750 gig disks
> connected to a 3ware controller, with each box connected to a switch over
> 3 bonded Gig E interfaces. The boxes boot off a SAN over a fiber channel
> interface and each box is used as a storage server, client and XEN host.
>
> The requirement is for three share exports, two that are unify shares for
> NYC and LAX and a 3rd that is a AFR between NYC and LAX. The idea is that
> we will store things that stay local in say /share-nyc or /share-lax and
> store files that need to be replicated between sites in /share that is afr
> of the two sites.
>
> High availably is important, the plan is to always use servers in pairs,
> server 0 for the brick and server 1 for the mirror of that data using AFR.
> Each server pair forms a block, with 4 blocks (8 servers) forming each
> city share unify. Data that needs to be in both NYC and LAX would actually
> be stored 4 times, twice in each city. To keep reads local, I was planing
> on using nfu forcing each city to prefer local reads.
>
> Would this work? Is gluster ready for someting like this? One thing I have
> not figured out is how to deal with name space, any ideas on that? Also,
> what issues will I run into with AFR between two cities 3000 miles apart?
> That latency is obviously going to be 60 ms more then between local
> servers, does this cause a problems?
>
>><>
> Nathan Stratton                         CTO, Voila IP Communications
> nathan at robotics.net                  nathan at voilaip.com
> http://www.robotics.net                 http://www.voilaip.com
>
>
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>


-- 
-Michael Fincham
Unleash Technology Solutions