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[Launchpad Bug Tracker <1486150@xxxxxxxxxxxxxxxxxx>]

[Expired for neutron because there has been no activity for 60 days.]

** Changed in: neutron
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1486150

Title:
  Neutron port-update fails to roll back the binding:profile data in
  ports table in neutron DB if a MechanismDriverError thrown by a
  mechanism driver

Status in neutron:
  Expired

Bug description:
  Steps to reproduce:
  1.	Inherit the update_port_precommit(self, context) in the vendor mechanism driver 
  2.	Throw MechanismDriverError in this method based on validation

  Expected output:
  None of the updated port parameters should be added in DB for the ports table as well as ml2_port_bindings table.

  Actual output:
  Eventhough the MechanismDriverError thrown by the vendor mechanism driver , ml2 plugin updates the value in the DB.
  Attached the logs in paste site:
  http://paste.openstack.org/show/420233/

  Neutron port-update REST API output:

  Earlier neutron port was created with local_link_information:
  “port_id” as Ten-GigabitEthernet1/0/36 using port-create command

  sdn@IronicVM:/opt/stack/logs$ curl -g -i -X PUT http://localhost:9696/v2.0/ports/"a3f10e8b-ee32-4e39-85cc-9ae34335302f"; -H "User-Agent: python-neutronclient" -H "Content-Type: application/json" -H "Accept: application/json" -H "X-Auth-Token: fab9f04cb1eb47b48848fe25b61678cf" -d '{"port": { "binding:profile": {"local_link_information":[{ "switch_id" : "44:31:92:61:89:d2",  "port_id" :"Ten-GigabitEthernet1/0/38"}], "bind_requested": false}, "binding:vnic_type" : "baremetal",  "binding:host_id" : "baremetal", "name": "P1", "admin_state_up": true}}'
  HTTP/1.1 500 Internal Server Error
  Content-Type: application/json; charset=UTF-8
  Content-Length: 108
  X-Openstack-Request-Id: req-2d6a5ea7-1389-40f3-abb9-86b898c256e5
  Date: Fri, 15 Apr 2016 11:30:30 GMT

  {"NeutronError": {"message": "update_port_precommit failed.", "type": "MechanismDriverError", "detail": ""}}sdn@IronicVM:/opt/stack/logs$
  sdn@IronicVM:/opt/stack/logs$

  sdn@IronicVM:/opt/stack/logs$ neutron port-show p1
  +-----------------------+-----------------------------------------------------------------------------------------------------------------------------------+
  | Field                 | Value                                                                                                                             |
  +-----------------------+-----------------------------------------------------------------------------------------------------------------------------------+
  | admin_state_up        | True                                                                                                                              |
  | allowed_address_pairs |                                                                                                                                   |
  | binding:host_id       | baremetal                                                                                                                         |
  | binding:profile       | {"local_link_information": [{"port_id": "Ten-GigabitEthernet1/0/38", "switch_id": "44:31:92:61:89:d2"}], "bind_requested": false} |
  | binding:vif_details   | {}                                                                                                                                |
  | binding:vif_type      | unbound                                                                                                                           |
  | binding:vnic_type     | baremetal                                                                                                                         |
  | device_id             |                                                                                                                                   |
  | device_owner          |                                                                                                                                   |
  | extra_dhcp_opts       |                                                                                                                                   |
  | fixed_ips             |                                                                                                                                   |
  | id                    | a3f10e8b-ee32-4e39-85cc-9ae34335302f                                                                                              |
  | mac_address           | fa:16:3e:60:c7:b8                                                                                                                 |
  | name                  | P1                                                                                                                                |
  | network_id            | 5be51697-ea2b-46a8-a65b-9b4894b80b3a                                                                                              |
  | port_security_enabled | True                                                                                                                              |
  | security_groups       | e39e3b81-2336-4619-8501-b10900753f44                                                                                              |
  | status                | ACTIVE                                                                                                                            |
  | tenant_id             | fd415d61bf5c4ba3bb80d0b407315f5d                                                                                                  |
  +-----------------------+-----------------------------------------------------------------------------------------------------------------------------------+

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