[openstack-dev] [Xen-API] xcp-xapi on Ubuntu 13.04

AP apxeng at gmail.com
Tue Apr 2 19:00:53 UTC 2013

On Tue, Apr 2, 2013 at 3:02 AM, John Garbutt
<John.Garbutt at rackspace.co.uk> wrote:
> Not sure of the state of xcp-xapi 13.04 on Ubuntu. Does anyone know if Xen
> 4.2 fixes got upstream?
> DevStack is only really recommended as a way for developers to get the
> latest code, and it is the script that is used to create the setup that
> gates code going into OpenStack trunk. I would certainly give the packages
> a try if you are looking for something more stable.

I am open to giving the stable packages a try. What I have at the
moment is a host running Ubuntu 13.04 + xcp-xapi. I need to be on
13.04 as I need some of the features from Xen 4.2 (mem_event). I am
now trying to create the OpenStack VM as described here:

Can I just bring up a Debian 7.0 PV instance and install the packages
described here?

Will that give me the OpenStack VM?

PS: The other OpenStack pieces (glance, horizon) needed to connect to
the host and manage it have been setup by other members of my team.

> If you could modify the script, or run it yourself and get the output of
> kpartx, we should be able to help you debug the issues you are seeing. I
> am johnthetubaguy on IRC if you want to chat in real-time.

I think we can hold off on this if we can just go with the stable packages.

> John
> PS
> You may get more luck for help on openstack-dev

I have CCed openstack-dev


> On 01/04/2013 19:21, "AP" <apxeng at gmail.com> wrote:
>>On Mon, Apr 1, 2013 at 8:16 AM, Thomas Goirand <zigo at debian.org> wrote:
>>> On 03/30/2013 08:43 AM, AP wrote:
>>>> I am trying to get OpenStack working with a host running Xen 4.2. I
>>>> found that Ubuntu 13.04 has moved to using Xen 4.2. I was able to
>>>> install the hypervisor and toolstack using "apt-get xcp-xapi". I
>>>> basically followed the instructions here:
>>>> https://wiki.openstack.org/wiki/XenServer/Install/XcpXapiOnPrecise
>>> You are in fact using the packages which are developed in Debian, and
>>> just migrated to Ubuntu without much change. IMO, you should really
>>> be using Debian rather than Ubuntu (of course, don't have to trust me,
>>> as I am the Debian Developer in charge of this, so I am of course
>>> vouching for the distro that I like...).
>>I have no problems switching to Debian, however looking at what you
>>have written below I might not have better luck there either with the
>>devstack script.
>>>> I am now unable to find clear instructions on how to setup a OpenStack
>>>> compute VM. Many websites pointed me at devstack to get the whole
>>>> stack running in a VM. But I am unable to get that to work.
>>> Yes, and IMO, that's really crap that they all tell "just use devstack".
>>> I wrote about it multiple times, but it seems nobody cares much.
>>>> I realize that the script is trying to mount the DomU disk in Dom0 but
>>>> kpartx is not able to handle it. I tried doing it by hand and was
>>>> unable to do so. Is there an updated script to do this? Or if someone
>>>> can point me at instructions to setup the OpenStack compute VM that
>>>> would helpful too.
>>>> Thanks,
>>>> AP
>>> The problem is that everyone tests with XCP as the CentOS
>>> appliance, and never with what is in Debian/Ubuntu. So I think
>>> that devstack must be broken in such a case. I don't think you
>>> will find any updated script for XCP in Ubuntu/Debian, you will
>>> have to work it out yourself. Though I'm quite sure it shouldn't
>>> be hard to mount your domU disk in the dom0.
>>OK, I will try debugging the problem and post if I succeed.
> John Garbutt
> Software Developer IV - UK
> Tel: +442087344853
> Mob:
> Fax:
> Web:
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