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 > > > _______________________________________________ > Gluster-devel mailing list > Gluster-devel@xxxxxxxxxx > http://lists.nongnu.org/mailman/listinfo/gluster-devel > -- -Michael Fincham Unleash Technology Solutions
