Re: dom0 kenrel crashes for openstack + libvirt + libxl

[David Vrabel <david.vrabel@citrix.com>]

On 12/11/14 18:41, Xing Lin wrote:
> Hi, 
> 
> I am aware that Xen via libvirt is in the group C support for openstack
> but since I am not able to install xenserver iso at compute machines I
> have, I have to consider to use xen with libvirt (xcp-xapi is not
> available for ubuntu14.04). I have three nodes, each one running ubuntu
> 14.04. I follow the instruction to install juno in ubuntu 14.04 and it
> works (I can create instances from openstack GUI - horizon) when I use
> kvm as the hypervisor at the compute node . However, if I switch to use
> xen as the hypervisor by installing xen-hypervisor-amd64 or
> nova-compute-xen, it will fail to create instances. It complained
> "backend for qemu disk is not ready". I checked and did not find qemu
> process running in dom0. I could not find /etc/init.d/xencommons
> either. Then, I compiled and installed xen-4.4 from source code and I
> got xencommons in /etc/init.d. qemu process is running in dom0. However,
> the dom0 kernel crashes this time when I try to launch an instance from
> openstack GUI. I am able to create a xen guest with virt-install from
> command line, with the following command. 
> 
> "$ virt-install --connect=xen:/// --name u14.04.3 --ram 1024 --disk
> u14.04.3.img,size=4,driver_name=qemu
> --location http://ftp.ubuntu.com/ubuntu/dists/trusty/main/installer-amd64/ --network
> bridge=virbr0"

Does this ubuntu bug look relevant?

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1350373

David