Re: [Xen-devel] Dom0 restartability

[Charlie Smurthwaite <charlie@xxxxxxxxxxxxxx>]

Am I correct in believing that the majority of IO for all domains passes through the DOM-0 kernel? I would think that a huge number of IO drivers would need to move into Xen in order to allow this without severe IO disruption. Are there methods of disk / network IO that do not rely on DOM-0?

Charlie

On 30 April 2010 17:19, Subbiah Kandasamy (skandasa) <skandasa@xxxxxxxxx> wrote:

Thanks Pasi, I am sure there are other things as well. I am looking for any pointers listing the work done in that area.

Thanks,
-SK.

-----Original Message-----
From: Pasi Kärkkäinen [mailto:pasik@xxxxxx]
Sent: Thursday, April 29, 2010 5:34 PM
To: Subbiah Kandasamy (skandasa)
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Dom0 restartability

On Thu, Apr 29, 2010 at 04:05:13PM -0700, Subbiah Kandasamy (skandasa) wrote:
>    In today's Xen summit I heard there is some work done on the
>    restartability of dom0. Any pointers to what has been done and what is
>    pending and the patches ?.
>

Restarting dom0 requires for example moving xenstored out of dom0..
so you don't lose the database when you restart dom0.

-- Pasi


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