Friday, 14 March 2014

Re: [RFC] Trusty plans for xen-api/xcp

On 02/10/2014 03:00 PM, Stefan Bader wrote:
> On 10.02.2014 15:47, George Dunlap wrote:
>> On Mon, Feb 10, 2014 at 9:24 AM, Robie Basak <> wrote:
>>> On Fri, Jan 31, 2014 at 01:45:44PM +0000, Robie Basak wrote:
>>>> Unless somebody steps up to maintain xen-api, I don't think it makes
>>>> sense to continue keeping these packages in Ubuntu, given that Debian
>>>> have removed them from testing and the existing packages broken (and, it
>>>> seems, thus stuck in trusty-proposed). So we should remove them from
>>>> trusty-proposed.
>>> I have filed bug 1278352 to have these packages removed from Trusty.
>> FYI, I just had a chat with the lead xapi developer. He's said that
>> unfortunately management has told them not to work on the open-source
>> xapi packages (at least for now); so if there is nobody in the
>> community willing to maintain it, then I think removing it is probably
>> the best option.
>> On a related note -- what version of libvirt / Xen will be in Trusty?
>> The SuSE guys have made a lot of progress on getting good support for
>> libxl and libvirt; that's probably the best way forward.
>> -George
> Libvirt version 1.2.x (currently .1) not sure whether this may or may not change
> until release. Xen ... at least 4.3.2 (not yet uploaded) but there has been some
> interest (for the better Arm support) on 4.4. Depends a bit how soon/late the
> release is compared to Trusty.
> Anyway, I would like to make xl the default for new setups at least. I am
> currently using it a lot together with virt-manager (though it has some odd ends
> still) and I am being told that openstack integration is done via libvirt at
> least (not sure they mandate the stack being xl or not).

I've just downloaded a daily snapshot from 03/13 and gone through the
process of installing Xen and testing basic functionality.

A couple of suggestions:
* The wiki minimally needs to be tweaked a bit for the new release; I
can do that when it's closer to the release.

* It would be good to be able to boot Xen be default if it's installed,
without having to muck about with setting the default. Is there any
chance of patching grub to reverse the default order?

* It would be better to default to xl rather than xend

* If you update to Xen 4.4 (which was released earlier this week) and
use 1.2.2 for libvirt, the libvirt/libxl driver should be really solid.

If you do update to 4.4, let me know when that's done, and I can help
test the libvirt integration.

Another advantage of upgrading to 4.4 is that nested virtualization is
much improved: you can feasibly install Xen inside a an HVM guest, and
then install HVM guests inside of that. Nested virtualization is really
slow, but it may be easier to test.


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