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Re: [Xen-users] CPU Prerequisites for Live Migrations

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Subject: Re: [Xen-users] CPU Prerequisites for Live Migrations
From: Vern Burke <vburke@xxxxxxxx>
Date: Wed, 20 Oct 2010 11:48:10 -0400
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I don't believe there is, from the Xen standpoint. The required
CPU features depend on what the VM needs.

As an example, in my XCP pool, I run AMD Opteron 248, 250, 275,
and 2214 with nothing but PV Linux guests and migrating works
just dandy.

Vern Burke

SwiftWater Telecom
Xen Cloud Control System

On 10/20/2010 11:38 AM, Hoot, Joseph wrote:
Hi all,

I'm trying to find documentation to describe what specific CPU flags, models, families requirements are needed for live 
migrations to be "supported."  I have found mailing list archives which tend to say things like "should" work 
or "may" work, but nothing that says "is supported." or "is certified."

Basically what I'm wondering is that if I have (2) quad-core cpu's on one 
server and (2) quad-core cpu's on another server -- both have the same family 
and stepping and exact same flags.  The only difference is that the model is 
different.  Is that something that the xen hypervisor typically will support 
when it comes to live migration?


Joseph R. Hoot
Lead System Programmer/Analyst
(w) 716-878-4832
(c) 716-759-HOOT
GPG KEY:   7145F633

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