Final Release Criterion for Xen DomU

Konrad Rzeszutek Wilk konrad.wilk at
Mon Sep 26 18:02:58 UTC 2011

On Mon, Sep 26, 2011 at 10:41:00AM -0600, Tim Flink wrote:
> During the discussion around Xen DomU support as a beta release
> criterion in the Fedora QA meeting today, the question of blocking for
> DomU came up.
> Specifically, do we want to have Xen DomU support as a final release
> criteria?
> I can think of two arguments for making it a release criterion:
> 1. If install as DomU doesn't work at final release, it becomes much
>    more difficult to install as DomU for that release without spinning
>    custom install media.
> 2. Amazon EC2 is based on Xen, DomU support could affect our ability to
>    release on EC2.
> Another thought is that Fedora 16 is going to be the first release in a
> while that supports running as Xen Dom0. It seems a bit silly to have
> support for Dom0 and not have the ability to run as DomU.
> Anyhow, thoughts around making DomU support a final release criterion?

Hey Tim,

I just subscribed to the mailing b/c of this question coming up. A bit of
introduction is probably necessary before I say "please do".

Along with Jeremy Fitzhardinge we maintain the Xen subsystem in the upstream
Linux kernel. The last couple of releases (kernel ones) we have been upstreaming
features to make Linux work as Dom0 and naturally fixing outstanding
bugs for DomU support.

So in terms of kernel developer to fix bugs - that is covered - if any user/QA
opens bugs for Dom0, DomU please CC me on the bug (ketuzsezr at

There is also a bunch of enthuastic folks what have been using the latest rawhide
and have had openned bugs (with patches!) against user land tools - so there are
folks in the community who can help. I've CC-ed the ones I've been in correspondence
in case they are not on this mailing list and want to provide some feedback.

Coming back to the question - I think DomU support should be on the release
criterion - I don't know know enough about the Fedora processes to know whether
it should be in final or beta or what not - leaving that to folks who know more
about this.

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