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] Domain save/migrate issue

To: "Anthony Liguori" <aliguori@xxxxxxxxxx>
Subject: RE: [Xen-devel] Domain save/migrate issue
From: "Noam Taich" <noam.taich@xxxxxxxxxxxx>
Date: Wed, 15 Feb 2006 08:42:38 -0800
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Wed, 15 Feb 2006 16:55:07 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
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/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AcYyTJ57BZu+BG+oSdygWCxiDG2/kwAACDMg
Thread-topic: [Xen-devel] Domain save/migrate issue
Noam Taich wrote:
> Ok. So pause ALONE is not possible. But I didn't mean I'd do only a
> pause:
> Suspend writes all the info you just mentioned. And the save code just

> writes the info that suspend left for it.
> So, lets tackle the problem in xen and/or the host.
> If a change was entered into the suspend code, say, a special mode,
> "pseudoSuspend" was added, in which the function writes all that same
> info 
Why exactly would this be better than just making domain's

All it would take is some hypervisor plumbing...


Anthony Liguori

Better? I don't know, I hold judgment as to whether or not domains
should be made unsuspendable, I just offer to add an option.
If there is no other need for domain suspension, it can replace the old

About the hypervisor plumbing issue, isn't it just a matter of going
over all the smaller suspend functions the main suspend function calls
and make the changes there? Making sure nothing else gets suspended, 
and changing the code that goes over the drivers and handles the
So far, I haven't seen anything that would indicate it would entail
in the far reaches of hypervisor space...

Then again... am I wrong? 

Xen-devel mailing list

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