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[James Pic <1957931@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

LocalVlanManager.pop() swallows KeyError to raise MappingNotFound:
https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/drivers/openvswitch/agent/vlanmanager.py#L110

OVSNeutronAgent.reclaim_local_vlan() excepts a KeyError:
https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py#L1064

Which breaks the loop in treat_devices_removed():
https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py#L2053

** Affects: neutron
     Importance: Undecided
         Status: In Progress

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https://bugs.launchpad.net/bugs/1957931

Title:
  OVS: except MappingNotFound instead of KeyError

Status in neutron:
  In Progress

Bug description:
  LocalVlanManager.pop() swallows KeyError to raise MappingNotFound:
  https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/drivers/openvswitch/agent/vlanmanager.py#L110

  OVSNeutronAgent.reclaim_local_vlan() excepts a KeyError:
  https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py#L1064

  Which breaks the loop in treat_devices_removed():
  https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/drivers/openvswitch/agent/ovs_neutron_agent.py#L2053

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