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[OpenStack Infra <1915898@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/c/openstack/neutron/+/818889
Committed: https://opendev.org/openstack/neutron/commit/e68a2832114739264dbbd42766b4991afa2e0d0d
Submitter: "Zuul (22348)"
Branch:    master

commit e68a2832114739264dbbd42766b4991afa2e0d0d
Author: Przemyslaw Szczerbik <przemyslaw.szczerbik@xxxxxxxx>
Date:   Wed Nov 17 09:12:16 2021 +0100

    Update placement allocation of bound ports when network QoS policy is changed
    
    When QoS policy is changed on a network, placement allocation of bound
    ports in that network has to be updated. This applies only to ports
    that do not overwrite network QoS policy.
    
    To detect network resource change, a new callback is registered for
    AFTER_UPDATE event.
    
    Closes-Bug: #1915898
    Change-Id: Ibc71d26cbb0dce99ea6dad9e5ccd0966e72f3f20


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

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https://bugs.launchpad.net/bugs/1915898

Title:
  changing the qos policy on a network does not change the placement
  allocation of the bound ports in the network

Status in neutron:
  Fix Released

Bug description:
  1) create a network with qos policy (with min_bw rule)
  2) create a port in that network without explicit qos policy (so the port inherits the policy from the network)
  3) boot a server with that port
  4) update the qos policy on the network

  Expected either:
  A)
  * qos policy change is accepted
  * the port resource request is updated according to the new qos policy
  * the placement allocation is updated according to the new qos policy

  B)
  * qos policy update is rejected

  Actual:
  * qos policy change is accepted -> OK as in A)
  * the port resource request is updated according to the new qos policy -> OK as in A)
  * the placement allocation is _not_ updated -> NOT OK in A)

  See the specific reproduction steps with printouts in:
  http://paste.openstack.org/show/802718/

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