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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Public bug reported:

This is based on code inspection at the moment, but attaching an
interface (port) to a server by providing a network and having nova-
compute create the port on that network can result in an over-quota
failure from neutron:

https://github.com/openstack/nova/blob/6ebb2c4cae65cb437e17a8c02fe5174a9825d8e0/nova/network/neutronv2/api.py#L565

Which is not handled in the API controller:

https://github.com/openstack/nova/blob/6ebb2c4cae65cb437e17a8c02fe5174a9825d8e0/nova/api/openstack/compute/attach_interfaces.py#L168

So it will result in a 500 response from the API when it should really
be something like 403.

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: api neutron

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https://bugs.launchpad.net/bugs/1823203

Title:
  PortLimitExceeded results in 500 error from POST /servers/{server_id
  }/os-interface

Status in OpenStack Compute (nova):
  New

Bug description:
  This is based on code inspection at the moment, but attaching an
  interface (port) to a server by providing a network and having nova-
  compute create the port on that network can result in an over-quota
  failure from neutron:

  https://github.com/openstack/nova/blob/6ebb2c4cae65cb437e17a8c02fe5174a9825d8e0/nova/network/neutronv2/api.py#L565

  Which is not handled in the API controller:

  https://github.com/openstack/nova/blob/6ebb2c4cae65cb437e17a8c02fe5174a9825d8e0/nova/api/openstack/compute/attach_interfaces.py#L168

  So it will result in a 500 response from the API when it should really
  be something like 403.

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