Public bug reported:

usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_client.py:187
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[req-fe87cb08-087a-4ae9-89f6-3e9efdba107c 867fcfc46d0444e5979a9457fdf006b1 
9279a2a9d6ec42c09362e8c6c5043c8a - - -] [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de] Failed to migration container: 'criu'
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de] Traceback (most recent call 
last):
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_migrate.py", 
line 57, in migrate_disk_and_power_off
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     instance)
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_utils.py", line 
212, in container_migrate
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     {'instance': 
instance_name, 'reason': ex}, instance=instance)
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     six.reraise(self.type_, 
self.value, self.tb)
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_utils.py", line 
206, in container_migrate
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     host=instance.host)
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_client.py", 
line 48, in client
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     return func(lxd_client, 
**kwargs)
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_client.py", 
line 189, in container_migrate
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     return 
lxd.container_migrate(kwargs['instance'])
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/pylxd/api.py", line 210, in container_migrate
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     return 
self.container.container_migrate(container)
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/pylxd/container.py", line 119, in 
container_migrate
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     'criu': 
str(data['metadata']['criu']),
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de] KeyError: 'criu'
2015-09-23 17:11:40.037 27041 ERROR nclxd.nova.virt.lxd.container_migrate 
[instance: 1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager 
[req-fe87cb08-087a-4ae9-89f6-3e9efdba107c 867fcfc46d0444e5979a9457fdf006b1 
9279a2a9d6ec42c09362e8c6c5043c8a - - -] [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de] Setting instance vm_state to ERROR
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de] Traceback (most recent call last):
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 6251, in 
_error_out_instance_on_exception
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     yield
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 3719, in 
resize_instance
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     timeout, retry_interval)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/driver.py", line 163, in 
migrate_disk_and_power_off
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     retry_interval)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_migrate.py", 
line 67, in migrate_disk_and_power_off
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     {'e': ex}, instance=instance)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     six.reraise(self.type_, self.value, 
self.tb)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_migrate.py", 
line 57, in migrate_disk_and_power_off
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     instance)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_utils.py", line 
212, in container_migrate
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     {'instance': instance_name, 'reason': 
ex}, instance=instance)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     six.reraise(self.type_, self.value, 
self.tb)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_utils.py", line 
206, in container_migrate
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     host=instance.host)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_client.py", 
line 48, in client
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     return func(lxd_client, **kwargs)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/nclxd/nova/virt/lxd/container_client.py", 
line 189, in container_migrate
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     return 
lxd.container_migrate(kwargs['instance'])
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/pylxd/api.py", line 210, in container_migrate
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     return 
self.container.container_migrate(container)
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]   File 
"/usr/lib/python2.7/dist-packages/pylxd/container.py", line 119, in 
container_migrate
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]     'criu': str(data['metadata']['criu']),
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de] KeyError: 'criu'
2015-09-23 17:11:40.051 27041 ERROR nova.compute.manager [instance: 
1d6e3e6b-2877-47f8-bd8a-40a33dbca1de]

** Affects: nova-compute-lxd (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1507706

Title:
  Unable to cold migrate containers across different hosts.

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