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Re: [Xen-users] RHEL6 beta vs. Xen

To: John Haxby <john.haxby@xxxxxxxxxx>
Subject: Re: [Xen-users] RHEL6 beta vs. Xen
From: Grant McWilliams <grantmasterflash@xxxxxxxxx>
Date: Thu, 10 Jun 2010 09:19:29 -0700
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n Thu, Jun 10, 2010 at 2:16 AM, John Haxby <john.haxby@xxxxxxxxxx> wrote:
Speaking for myself, not on behalf of my employer:

On 09/06/10 17:21, Grant McWilliams wrote:

Since Oracle's Linux is basically RHEL with YaST (or so I've heard) then maybe the next version will be based on RHEL6 and of course (?) it will include a Xen kernel.
Then all we have to do is drop it in a repo for RHEL/CentOS. Well theoretically.

No.   There is a YaST port available, but Oracle's Linux is essentially an RHEL rebuild -- this from 2007 is a pretty good summary: http://blogs.oracle.com/wim/2007/02/unbreakable_linux.html and there are other things on that blog about OracleVM.

OracleVM is a separate product, it's not OEL.  For a start the hypervisor is completely different to RHEL/OEL and the management stack is all Oracle's.  OracleVM is open source (of course) and you can download it to see what's in there and draw your own conclusions about what the future might be.  You can't reasonably assume that a future version will have an RHEL6 base though, and, from that blog entry, you can't assume that OEL6 will have a Xen hypervisor (unless RHEL6 acquires one).


Maybe it's a different "product" but it looks like the guts are the same. From the Oracle VM FAQ

What is the difference between Oracle VM and the virtualization that comes bundled with
Oracle Enterprise Linux?
As part of the Unbreakable Linux Support program, Oracle supports virtualization that is included with
Oracle Enterprise Linux 5. Please note that Oracle products are not certified to run in that
environment. Any customer who wants to deploy Oracle products in a virtual environment should use
Oracle VM, and subscribe to Oracle VM support.

So if the Hypervisor is completely different then OEL they're pulling off some pretty neat magic. OEL has tracked RHEL release for release from 4.4 to 5.5 so unless you believe in celestial teapots we can assume it might continue to do so.

Does anyone actually use Oracle VM so we can get a qualified answer as to what it IS running? I'm downloading both now as I'm curious.

What makes the most sense is OEL6 will track RHEL6 and they'll go through the trouble of getting Xen in Dom0 since they now have 3 VM technologies surrounding Xen. However, they could just move all their management tools to KVM and dump Xen as well.

Grant McWilliams
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