Libvirt LXC and Xen boot fails with VIR_DOMAIN_START_PAUSED

[Andrew Melton]

Libvirt's lxc driver does not support the VIR_DOMAIN_START_PAUSED flag and thus fails to create the domain. This causes the boot to fail.

Stacktrace:
https://gist.github.com/ramielrowe/9936359

Steps to reproduce:
1) Create devstack with following localrc options
VIRT_DRIVER='libvirt'
LIBVIRT_TYPE='lxc'
2) Boot instance
3) Observe failed boot and exception in compute log

[iain MacDonnell (dseven)]

This affects Xen too....

2014-04-01 18:43:59.162 6922 TRACE nova.compute.manager [instance: dda6c77c-cca5-48ac-b9d5-b70ac32fd26e] libvirtError: unsupported flags (0x1) in function xenUnifiedDomainCreateWithFlags

[iain MacDonnell (dseven)]

BTW, this problem was introduced by:

https://github.com/openstack/nova/commit/02aed43b76622f1828d48c982230981bd53e95f7

which is new in icehouse-rc1

[Simon Pasquier (simon-pasquier)]

Looks like this is a side-effect of this change => https://blueprints.launchpad.net/nova/+spec/admin-event-callback-api

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/84841

[iain MacDonnell (dseven)]

In addition to setting launch_flags to zero, I had to also set vifs_already_plugged=True in order to get a successful launch with Xen - otherwise it times out waiting for a callback.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/84841
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=bfb28fcf9031af4c695177663702ce05edbbfa4d
Submitter: Jenkins
Branch: master

commit bfb28fcf9031af4c695177663702ce05edbbfa4d
Author: Vladik Romanovsky <email address hidden>
Date: Wed Apr 2 15:00:19 2014 -0400

    libvirt: pause mode is not supported by all drivers

    Only KVM/Qemu drivers support the VIR_DOMAIN_START_PAUSED flag
    Booting guests on other drivers with the above flag will make it fail.

    Closes-Bug: 1301453
    Change-Id: Ia98e018b686c4ec3c15fd1f6bcc78188f330fcef

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: milestone-proposed
Review: https://review.openstack.org/85708

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/85708
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=c0feec3f21757efe74f0228b5e05c9edff3bffac
Submitter: Jenkins
Branch: milestone-proposed

commit c0feec3f21757efe74f0228b5e05c9edff3bffac
Author: Vladik Romanovsky <email address hidden>
Date: Wed Apr 2 15:00:19 2014 -0400

    libvirt: pause mode is not supported by all drivers

    Only KVM/Qemu drivers support the VIR_DOMAIN_START_PAUSED flag
    Booting guests on other drivers with the above flag will make it fail.

    Closes-Bug: 1301453
    Change-Id: Ia98e018b686c4ec3c15fd1f6bcc78188f330fcef
    (cherry picked from commit bfb28fcf9031af4c695177663702ce05edbbfa4d)