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[OpenStack Infra <1794424@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/605589
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=6b5466969499de021275c49e3fec2ab45d7fd908
Submitter: Zuul
Branch:    master

commit 6b5466969499de021275c49e3fec2ab45d7fd908
Author: Huifeng Le <huifeng.le@xxxxxxxxx>
Date:   Thu Sep 27 21:43:35 2018 +0800

    Enable delete bound trunk for linux bridge agent
    
    For agent such as linux bridge which allows creating trunk on
    bound port, this patch provides a fix to allow deleting trunk
    without unbound port first. And it will help to keep the port
    (trunk's parent port) working while deleting the trunk.
    
    Co-Authored-By: Allain Legacy <Allain.legacy@xxxxxxxxxxxxx>
    
    Closes-Bug: #1794424
    Story: 2003889
    
    Change-Id: Iae2ae535bf3ba1548136bf3fe4306a42bad4e635


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1794424

Title:
  trunk: can not delete bound trunk for agent which allow create trunk
  on bound port

Status in neutron:
  Fix Released

Bug description:
  High level description:
  For agent such as linux bridge which allows creating trunk on bound port, it is not allowed to delete the trunk if not unbound the port (parent-port) first. It will break the use scenario which expect to keep the port's (trunk's parent port) communication while delete the trunk.
  The issue can be reproduced on the latest devstack.

  Environments:configure to use linux bridge agent
  Version: latest devstack

  Steps to reproduce:
  1. create network/subnet/trunk parent port/trunk sub port
  openstack network create net0
  openstack subnet create --network net0 --subnet-range 10.0.4.0/24 subnet0
  openstack port create --network net0 trunk1_port
  parent_trunk1_mac="$( openstack port show trunk1_port | awk '/ mac_address / { print $4 }' )"
  openstack port create --network net1 --mac-address "$parent_trunk1_mac" trunk1_subport1
  result: success

  2. create VM (bound trunk parent port first)
  openstack server create --flavor ds512M --image vlan-capable-image --nic port-id="$trunk1_port_id" --wait vm_trunk1
  result: success

  3. create trunk: openstack network trunk create --parent-port trunk1_port --subport port=trunk1_subport1,segmentation-type=vlan,segmentation-id=101 trunk1
  result: success

  4. delete trunk:
  openstack network trunk delete trunk1
  Expected output: success
  Actual output: fail with message "Trunk trunk1 is currently in use"

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