This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] save/restore/migrate kernel questions

To: Jan Beulich <JBeulich@xxxxxxxxxx>
Subject: Re: [Xen-devel] save/restore/migrate kernel questions
From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Date: Wed, 10 Nov 2010 08:33:27 +0000
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>
Delivery-date: Wed, 10 Nov 2010 00:34:14 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4CDA60B90200007800021652@xxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Organization: Citrix Systems, Inc.
References: <4CDA60B90200007800021652@xxxxxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
On Wed, 2010-11-10 at 08:07 +0000, Jan Beulich wrote:
> Jeremy: Is an off the shelf, upstream pv-ops kernel capable of
> being saved/restored/migrated? Somehow I can't seem to find the
> suspend event channel setup code...

save/restore/migration support has been in the pvops kernel since (IIRC)
the late 2.6.2x kernels and still works today. I haven't tested other
trees as widely but it is pretty solid in the latest 2.6.32.x kernels
and in the xen.git tree.

The suspend event channel is an optional extra (used to support fast
back to back checkpoint iterations, e.g. for remus) which is not
currently implemented in pvops. s/r/m works without it via the
traditional /local/domain/N/control/shutdown xenstore key.


Xen-devel mailing list

<Prev in Thread] Current Thread [Next in Thread>