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

** Also affects: neutron/havana
   Importance: Undecided
       Status: New

** Changed in: neutron/havana
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1270724

Title:
  nicira: error occurs when net-gateway-connect with different
  segmentation-type

Status in OpenStack Neutron (virtual network service):
  Fix Committed
Status in neutron havana series:
  Fix Committed
Status in The OpenStack VMwareAPI subTeam:
  New

Bug description:
  1. create net-gateway and gateway-connection. segmentation-type is vlan and
     segmentation_id is 0.

  neutron net-gateway-create --device id=c4369a1c-3fb2-4f45-8ac7-17d15b20508e,interface_name=eth0 NetworkgatewayName
  neutron net-gateway-connect  NetworkgatewayName L2-1 --segmentation-type vlan
  openstack@devstack:~/devstack$ neutron net-gateway-show NetworkgatewayName
  +-----------+--------------------------------------------------------------------------------------------------------+
  | Field     | Value                                                                                                  |
  +-----------+--------------------------------------------------------------------------------------------------------+
  | default   | False                                                                                                  |
  | devices   | {"interface_name": "eth0", "id": "c4369a1c-3fb2-4f45-8ac7-17d15b20508e"}                               |
  | id        | ab76582b-ea57-4184-82ce-68ad013aed5e                                                                   |
  | name      | NetworkgatewayName                                                                                     |
  | ports     | {"port_id": "2e8d5d83-d2a2-4570-815a-fe61d2257568", "segmentation_type": "vlan", "segmentation_id": 0} |
  | tenant_id | ec2918c3e7514158987c8f04c64d7521                                                                       |
  +-----------+--------------------------------------------------------------------------------------------------------+

  2. add network to gateway by net-gateway-connect. segmentation-type is
  flat.

  openstack@devstack:~/devstack$ neutron  net-gateway-connect  NetworkgatewayName L2-2 --segmentation-type flat
  Request Failed: internal server error while processing your request.

  I think Neutron should not return 500.

  =====

  [Neutron server's log]

  It seems conflict of segmentation-id because 0 is already used by
  vlan.

  2014-01-27 11:57:23.805 ERROR NeutronPlugin [-] Unable to create port or set port attachment in NVP.
  2014-01-27 11:57:23.819 ERROR neutron.api.v2.resource [req-dbf0b9a0-0ef0-41b1-99e7-88532b07d90e admin 36a8929801cb48d4a02fcad90a93a090] connect_network failed
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource Traceback (most recent call last):
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/api/v2/resource.py", line 84, in resource
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     result = method(request=request, **args)
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/api/v2/base.py", line 191, in _handle_action
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     return getattr(self._plugin, name)(*arg_list, **kwargs)
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/NeutronPlugin.py", line 1980, in connect_network
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     context, network_gateway_id, network_mapping_info)
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/dbexts/nicira_networkgw_db.py", line 316, in connect_network
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     network_mapping_info.get('segmentation_id')}})
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/NeutronPlugin.py", line 1189, in create_port
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     self._delete_port(context, neutron_port_id)
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     self.gen.next()
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/NeutronPlugin.py", line 1173, in create_port
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     port_create_func(context, port_data)
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/NeutronPlugin.py", line 711, in _nvp_create_l2_gw_port
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     lport['uuid'])
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     self.gen.next()
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/NeutronPlugin.py", line 705, in _nvp_create_l2_gw_port
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     int(port_data.get('gw:segmentation_id') or 0))
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/nvplib.py", line 1013, in plug_l2_gw_service
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     return _plug_interface(cluster, lswitch_id, lport_id, att_obj)
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/nvplib.py", line 1003, in _plug_interface
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     cluster=cluster)
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/nvplib.py", line 1058, in do_request
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     res = cluster.api_client.request(*args)
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/NvpApiClient.py", line 150, in request
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     self.error_codes[status](self, response)
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource   File "/opt/stack/neutron/neutron/plugins/nicira/NvpApiClient.py", line 181, in fourZeroNine
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource     raise Conflict()
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource Conflict: Request conflicts with configuration on a different entity.
  2014-01-27 11:57:23.819 TRACE neutron.api.v2.resource
  2014-01-27 11:57:23.852 INFO neutron.wsgi [req-dbf0b9a0-0ef0-41b1-99e7-88532b07d90e admin 36a8929801cb48d4a02fcad90a93a090] 172.23.51.99 - - [27/Jan/2014 11:57:23] "PUT /v2.0/network-gateways/6ece86bd-b4c9-4bfb-b198-e84c979a84b7/connect_network.json HTTP/1.1" 500 230 0.285504

  [net-gatway-connect with vlan which segmentatin-id 0 causes 409]

  devstack@devstack:~$ neutron net-gateway-connect --segmentation-type=vlan NetgatewayName L2-2
  409-{u'NeutronError': {u'message': u"The specified mapping '{u'network_id': u'ea8d911b-c5ba-4daf-ae27-32415c0689a1', u'segmentation_id': 0, u'segmentation_type': u'vlan'}' is already in use on network gateway '6ece86bd-b4c9-4bfb-b198-e84c979a84b7'.", u'type': u'GatewayConnectionInUse', u'detail': u''}}

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