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[Armando Migliaccio <1335226@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

During method ensure_port_binding as of master:

https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/db.py#L59

A port can be retrieved, and if not available then created. This may be
prone to reference constraint failures in highly concurrent
environments.

** Affects: neutron
     Importance: Undecided
     Assignee: Armando Migliaccio (armando-migliaccio)
         Status: New

** Changed in: neutron
     Assignee: (unassigned) => Armando Migliaccio (armando-migliaccio)

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https://bugs.launchpad.net/bugs/1335226

Title:
  ML2 ensure_port_binding may be prone to race condition

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  During method ensure_port_binding as of master:

  https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/db.py#L59

  A port can be retrieved, and if not available then created. This may
  be prone to reference constraint failures in highly concurrent
  environments.

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