Xen users - Nov 2006 - Migrating existing system (Linux) to Xen

Hi.

Is there possible to migrate any existing system running kernel 2.6 to Xen, or
migrating every application to newly created virtual OS is necessary?

R.

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> -----Original Message-----
> From: xen-users-bounces@lists.xensource.com 
> [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of 
> siaco@autograf.pl
> Sent: 14 November 2006 20:07
> To: xen-users@lists.xensource.com
> Subject: [Xen-users] Migrating existing system (Linux) to Xen
> 
> Hi.
> 
> Is there possible to migrate any existing system running 
> kernel 2.6 to Xen, or migrating every application to newly 
> created virtual OS is necessary?
Seeing as no-one has picked this one up, I''ll take a stab at
answering... 

Let''s first say that I''m not entirely sure what you mean by
migrating in
this case. Do you want to move a currently running service from one
machine to a virtualized instance on a different machine? 

Xen itself only supports migrating the whole OS when it''s already on a
xenified system, so you can''t expect Xen to help with the migration
from
a non-Xen platform. 

You should be able to do this, tho:

1. Install Xen + Dom0 on a machine.
2. Install a Xenified guest on this machine.
3. Install into the Xenified guest the applications necessary for your
service(s). 
4. Migrate from the non-Xen machine to the Xenified. 

Aside from step 1 (and the detailed difference that the step 2 would be
installing a standard Linux kernel, of course), this is exactly the same
steps you''d take if you wanted to migrate from one non-Xen installation
to another non-Xen installation. 

If that''s not really what you asked for, then please clarify what you
actually want to do. You can probably do it one way or another. 

--
Mats
> 
> R.
> 
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