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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: oslo
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1140133

Title:
  latest json utils logging 'Max serialization depth exceeded' errors

Status in OpenStack Compute (Nova):
  Fix Committed
Status in Oslo - a Library of Common OpenStack Code:
  Fix Released

Bug description:
  Using Nova Grizzly... with the latest jsonutils sync from openstack
  common I'm now seeing the following errors in api.log:

  ERROR nova.openstack.common.jsonutils [-] Max serialization depth
  exceeded on object: 4 {'vm_state': u'active', 'availability_zone':
  None, 'terminated_at': None, 'ephemeral_gb': 0L, 'instance_type_id':
  2L, 'user_data': None, 'vm_mode': None, 'deleted_at': None,
  'reservation_id': u'r-hg5852o1', 'id': 23L, 'security_groups':
  [<nova.db.sqlalchemy.models.SecurityGroup object at 0x5bbf490>],
  'disable_terminate': False, 'root_device_name': u'/dev/vda',
  'user_id': u'52478460e2914a7a958b1c64e1cfcbda', 'uuid': u'32fe3701
  -df8e-40c9-a0f8-3a991480c7a2', 'default_swap_device': None,
  'info_cache': <nova.db.sqlalchemy.models.InstanceInfoCache object at
  0x5149c90>, 'hostname': u'test', 'launched_on': u'nova1',
  'display_description': u'test', 'key_data': None, 'deleted': 0L,
  'config_drive': u'', 'power_state': 1L, 'default_ephemeral_device':
  None, 'progress': 0, 'project_id':
  u'aa0e59701d3948c3aed0642bfef3e046', 'launched_at':
  datetime.datetime(2013, 3, 2, 2, 40, 55), 'scheduled_at':
  datetime.datetime(2013, 3, 2, 2, 40, 32), 'node': u'nova1',
  'ramdisk_id': 'ea1d7fa2-b722-4625-8daf-0fb13eec373a', 'access_ip_v6':
  None, 'access_ip_v4': None, 'kernel_id': '773f795a-99ed-47ff-
  afd1-3e6403ae980f', 'key_name': None, 'updated_at':
  datetime.datetime(2013, 3, 2, 2, 41, 25, 444743), 'host': u'nova1',
  'extra_specs': {}, 'display_name': u'fog', 'system_metadata':
  [<nova.db.sqlalchemy.models.InstanceSystemMetadata object at
  0x5125a50>, <nova.db.sqlalchemy.models.InstanceSystemMetadata object
  at 0x5149110>, <nova.db.sqlalchemy.models.InstanceSystemMetadata
  object at 0x5149ed0>,
  <nova.db.sqlalchemy.models.InstanceSystemMetadata object at
  0x5149c50>, <nova.db.sqlalchemy.models.InstanceSystemMetadata object
  at 0x5149210>, <nova.db.sqlalchemy.models.InstanceSystemMetadata
  object at 0x51490d0>,
  <nova.db.sqlalchemy.models.InstanceSystemMetadata object at
  0x5149b50>, <nova.db.sqlalchemy.models.InstanceSystemMetadata object
  at 0x5149050>, <nova.db.sqlalchemy.models.InstanceSystemMetadata
  object at 0x5149490>,
  <nova.db.sqlalchemy.models.InstanceSystemMetadata object at
  0x5149910>, <nova.db.sqlalchemy.models.InstanceSystemMetadata object
  at 0x5149290>, <nova.db.sqlalchemy.models.InstanceSystemMetadata
  object at 0x5149090>,
  <nova.db.sqlalchemy.models.InstanceSystemMetadata object at
  0x5149a90>], 'task_state': 'rebuilding', 'shutdown_terminate': False,
  'cell_name': None, 'root_gb': 0L, 'locked': False, 'name':
  'instance-00000017', 'created_at': datetime.datetime(2013, 3, 2, 2,
  40, 32), 'launch_index': 0L, 'memory_mb': 512L, 'instance_type':
  <nova.db.sqlalchemy.models.InstanceTypes object at 0x5bbfc90>,
  'vcpus': 1L, 'image_ref': u'd5270c8c-8847-4af3-bb38-f45c56ed9abd',
  'architecture': None, 'auto_disk_config': None, 'os_type': None,
  'metadata': [<nova.db.sqlalchemy.models.InstanceMetadata object at
  0x4e50a50>]}

  ----

  https://github.com/openstack/nova/commit/7b206ad53d0ecfb9176a3c47e574552998caa0f7#nova/openstack/common/jsonutils.py

  I do not believe the extra LOG.error in that commit should be there...
  (our code doesn't support that ATM due to nested instance refs, etc)

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