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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/1293657

Title:
  delete_ports_by_device_id should ignore portnotfound exception

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

Bug description:
  The fix for https://bugs.launchpad.net/neutron/+bug/1282925 removed
  the sql update lock on the ports table to alleviate deadlock issues.
  However, now it is possible that the DHCP agent will encounter a
  PortNotFound exception if another request deletes a port that the
  delete_ports_by_device_id method is getting ready to delete. This is
  expected; however, it is currently not caught and will interrupt the
  port deletions, leaving leftover ports.

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