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[Balazs Gibizer <1943724@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

When changing the QoS policy having a minimum bandwidth rule on a bound
port to another policy where the direction of the min bw rule has
changed then neutron accepts the request but fails to update the
bandwidth resource allocation in placement accordingly.

Reproduction
------------

I will push a tempest test reproducing the issue soon.

Expected behavior
-----------------
Neutron allocates resources in placement according to the new direction

Actual behavior
---------------
Neutron does not move the resource allocation from one resource class to the other (representing the directions)

Affected version
----------------
Reproduced on recent master in devstack.

stack@master0:~/neutron$ git log --oneline
6db2619628 Merge "[DVR] Set arp entries only for single IPs given as allowed addr pair"

Bug probably exists since neutron added support for changing QoS policy
on bound ports with minimum bandwidth rules.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1943724

Title:
  Change a QoS policy on a bound port does not handle minimum bandwidth
  direction change

Status in neutron:
  New

Bug description:
  When changing the QoS policy having a minimum bandwidth rule on a
  bound port to another policy where the direction of the min bw rule
  has changed then neutron accepts the request but fails to update the
  bandwidth resource allocation in placement accordingly.

  Reproduction
  ------------

  I will push a tempest test reproducing the issue soon.

  Expected behavior
  -----------------
  Neutron allocates resources in placement according to the new direction

  Actual behavior
  ---------------
  Neutron does not move the resource allocation from one resource class to the other (representing the directions)

  Affected version
  ----------------
  Reproduced on recent master in devstack.

  stack@master0:~/neutron$ git log --oneline
  6db2619628 Merge "[DVR] Set arp entries only for single IPs given as allowed addr pair"

  Bug probably exists since neutron added support for changing QoS
  policy on bound ports with minimum bandwidth rules.

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