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

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

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https://bugs.launchpad.net/bugs/1188652

Title:
  Nicira plugin: get_port reports wrong port status for extended
  switches

Status in OpenStack Neutron (virtual network service):
  Fix Released

Bug description:
  When using the provider networks extension with the nicira plugin, a
  single, large, network might be backed by several NVP logical
  switches.

  When reading the logical status for a port, the plugin invokes nvplib.get_logical_port_status. This routine reads a logica port configuraiton providing the logical switch uuid and the logica port uuid.
  The Plugin leverages the fact that nvp logical switch uuid == quantum network id.
  However, this is not always true in the case of extended switches. The operation then migth a 404 error if the port was being sought on the first logical switch of the chain, whereas it might be on a different logical switch. Its state is then set to ERROR whereas it should be 'ACTIVE' or 'DOWN'.

  Steps to reproduce:

  1) edit /etc/quantum/plugins/nicira/nvp.ini and set max_lp_per_bridged_ls to a small value, for instance 3
  2) restart quantum-server
  3) quantum net-create bridged --provider:network_type=vlan --provider:physical_network=9f5bd279-fcda-44c4-a709-efec63bc6eb9 --provider:segmentation_id=666
  4) quantum subnet-create bridged 192.168.0.0/16
  5) quantum port-create bridged --name bridged-2;  quantum port-create bridged --name bridged-3
      bridged-3 will be created on a 2nd logical switch (the 3rd port on the 1st ls is the dhcp port)
  6) user@os-nvp-ctrl:~/devstack$ quantum port-show bridged-3
  +-----------------------+------------------------------------------------------------------------------------+
  | Field                 | Value                                                                              |
  +-----------------------+------------------------------------------------------------------------------------+
  | admin_state_up        | True                                                                               |
  | device_id             |                                                                                    |
  | device_owner          |                                                                                    |
  | fixed_ips             | {"subnet_id": "1e568b32-198f-4ad3-8520-fa15555b2e89", "ip_address": "192.168.0.5"} |
  | id                    | 691d2cbc-43c0-4c2c-b065-ff4d2f171fc9                                               |
  | mac_address           | fa:16:3e:a9:db:0e                                                                  |
  | name                  | bridged-3                                                                          |
  | network_id            | 6ec622d4-8608-40a7-8712-d7e9d96bda8c                                               |
  | port_security_enabled | True                                                                               |
  | security_groups       | f0750245-e9e0-4a2f-87d0-89205bdb8773                                               |
  | status                |  ERROR                                                                            |
  | tenant_id             | d6ddcd5d5d6f4c30bdb7fd3407b4a4fa                                                   |
  +-----------------------+------------------------------------------------------------------------------------+

  Status should not be 'ERROR' but 'DOWN'

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