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

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

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https://bugs.launchpad.net/bugs/1160193

Title:
  Port information is deleted in live-migration with NEC plugin.

Status in OpenStack Quantum (virtual network service):
  Fix Released
Status in quantum grizzly series:
  Fix Released

Bug description:
  This is a bug in NEC Plugin.

  While migrating vm, it's port information is deleted at the end of the migration sequence.
  This makes a lack of port information and the port is never activated.
  The problem is that quantum-server(nec-plugin) delete port information by receiving port_removed message from source host, even if the port still exists on destination host.

  In vm migration sequence,
  1. nova-compute creates a new port on destination host,
  2. quantum-agent(nec) sends port_added message to qauntum-server(nec),
  3. quantum-server(nec) updates port information,
  4. (kvm migrates vm,)
  5. nova-compute deletes old port on source host,
  6. quantum-agent(nec) sends port_deleted message to qauntum-server(nec),
  7. quantum-server(nec) deletes port information.

  I can fix this bug in a small patch,
  I hope that the bugfix will be backported into grizzly release.

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