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[Tobias Urdin <tobias@xxxxxxxxxx>]

Booting a nova instance with a block device as root volume.

** Also affects: nova (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1644187

Title:
  ValueError on creating new nova instance

Status in OpenStack Compute (nova):
  Confirmed
Status in nova package in Ubuntu:
  Confirmed

Bug description:
  New bug introduced when upgrading nova-api on Ubuntu 14.04 for cloud archive liberty stable repo.
  (deb http://ubuntu-cloud.archive.canonical.com/ubuntu trusty-updates/liberty main)

  
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions [req-e3cb4d1c-a286-4450-aaa2-066072d1f306 3eb3f6111be04a8a957d8a3e8cb2dd86 6470df6b106e47508ebb00db08b557cf - - -] Unexpected exception in API method
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions Traceback (most recent call last):
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/extensions.py", line 478, in wrapped
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     return f(*args, **kwargs)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/validation/__init__.py", line 73, in wrapper
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     return func(*args, **kwargs)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/validation/__init__.py", line 73, in wrapper
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     return func(*args, **kwargs)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/compute/servers.py", line 611, in create
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     **create_kwargs)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/hooks.py", line 149, in inner
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     rv = f(*args, **kwargs)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 1587, in create
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     check_server_group_quota=check_server_group_quota)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 1203, in _create_instance
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     block_device_mapping, legacy_bdm)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 862, in _check_and_transform_bdm
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     context, block_device_mapping)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/objects/block_device.py", line 314, in block_device_make_list_from_dicts
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     for bdm in bdm_dicts_list]
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_versionedobjects/base.py", line 294, in __init__
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     setattr(self, key, kwargs[key])
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_versionedobjects/base.py", line 71, in setter
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     field_value = field.coerce(self, name, value)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_versionedobjects/fields.py", line 189, in coerce
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     return self._type.coerce(obj, attr, value)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_versionedobjects/fields.py", line 304, in coerce
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions     return int(value)
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions ValueError: invalid literal for int() with base 10: ''
  2016-11-23 11:31:15.341 1600 ERROR nova.api.openstack.extensions 
  2016-11-23 11:31:15.361 1600 INFO nova.api.openstack.wsgi [req-e3cb4d1c-a286-4450-aaa2-066072d1f306 3eb3f6111be04a8a957d8a3e8cb2dd86 6470df6b106e47508ebb00db08b557cf - - -] HTTP exception thrown: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
  <type 'exceptions.ValueError'>

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