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Re: [Xen-users] OpenMosix and Xen

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] OpenMosix and Xen
From: Miguel Gómez <elmiguelonmakinon@xxxxxxxxx>
Date: Mon, 4 Jul 2005 19:18:13 +0200
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Reply-to: Miguel Gómez <elmiguelonmakinon@xxxxxxxxx>
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Thank you, everybody. You agree about that what I'm thinking is not a good idea, or at least, it is very difficult. I am sure that it's dificult and I don't know if I will get something that worths it.
I have been reading the Xen Roadmap and it says that in Xen 3.0 release, one new feature will be:

  • Cluster management. We wish to add tool support to provide a better unified interface to managing a cluster of Xen machines. This would include features such as automatic use of VM live-migration to load-balance across a cluster, and the ability to 'evacuate' VMs from a node before shutting it down for maintenance etc.
And this is what I am looking for!!!, I thought that I could do this on OpenMosix, but you say that I have to look for another Cluster Technology, which one? Have you ever done something like this?


On 7/2/05, Vincent Hanquez <tab@xxxxxxxxx> wrote:
On Thu, Jun 30, 2005 at 06:20:52PM +0200, Miguel Gómez wrote:
> I would like to mount Xen Virtual Machines on a OpenMosix Cluster. Can I do
> that? I have seen a Vincent Hanquez patch in OpenMosix sourceforge page.

not really. the patch is here to have an openmosix kernel running under
Xen as Mark said.

> The thing is that I think that if you use that patch, you can make a Cluster
> with a lot of Virtual Machines. But what I want to do is the opposite, I
> want to make a Cluster with real machines, and then I would like to mount
> Virtual Machines on that Cluster. I know, I would like to do a lot of things
> and they are a bit dificult, so I need your help and support.

openMosix is not what you are looking for, because openMosix migrates
object at the process level, whereas VM are a whole operating system.

At a basic start, you can write a small application that will
communicate with other node for gathering lots of heuristic (cpu load,
mem load, ...) and execute xm migrate locally.

that might look like an openmosix userspace scheduler actually.

--
Vincent Hanquez

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