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[Eduardo Olivares <2095167@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The whitebox-neutron-temptest-plugin test test_dscp_bwlimit_external_network has been failing consistently since Jan 8th:
https://zuul.opendev.org/t/openstack/builds?job_name=whitebox-neutron-tempest-plugin-ovn-single-thread&project=x%2Fwhitebox-neutron-tempest-plugin&pipeline=periodic&skip=0

The BW limit that the test applies to the external/provider network is
not actually applied.

test passes:
https://03bdeb201ad5b10b1d29-c8e8f0465e65b3e97bf6a5ab87ec6f98.ssl.cf5.rackcdn.com/periodic/opendev.org/x/whitebox-neutron-tempest-plugin/master/whitebox-neutron-tempest-plugin-ovn-single-thread/dbf67fe/controller/logs/screen-q-svc.txt
relevant request: req-739334e4-46ac-4806-b8b1-8b362587ebb1
when the BW limit is added to the policy (which was added to the external network before), it generates a transaction with 16 commands to the OVN NB DB, including two UpdateLSwitchPortQosOptionsCommand's

test fails:
https://storage.bhs.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_6b9/939519/1/check/whitebox-neutron-tempest-plugin-ovn-single-thread/6b9ce99/controller/logs/screen-q-svc.txt
relevant request: req-75cfa10b-f983-4756-982b-239b7c4caab6
when the BW limit is added to the policy (which was added to the external network before), it generates a transaction with 13 commands to the OVN NB DB. No UpdateLSwitchPortQosOptionsCommand's at all

It seems to me the following patch, which was merged on Jan 7th, could have caused this regression:
https://review.opendev.org/c/openstack/neutron/+/934418

** Affects: neutron
     Importance: Undecided
     Assignee: Rodolfo Alonso (rodolfo-alonso-hernandez)
         Status: New

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https://bugs.launchpad.net/bugs/2095167

Title:
  BW limit not applied to external/provider network

Status in neutron:
  New

Bug description:
  The whitebox-neutron-temptest-plugin test test_dscp_bwlimit_external_network has been failing consistently since Jan 8th:
  https://zuul.opendev.org/t/openstack/builds?job_name=whitebox-neutron-tempest-plugin-ovn-single-thread&project=x%2Fwhitebox-neutron-tempest-plugin&pipeline=periodic&skip=0

  The BW limit that the test applies to the external/provider network is
  not actually applied.

  test passes:
  https://03bdeb201ad5b10b1d29-c8e8f0465e65b3e97bf6a5ab87ec6f98.ssl.cf5.rackcdn.com/periodic/opendev.org/x/whitebox-neutron-tempest-plugin/master/whitebox-neutron-tempest-plugin-ovn-single-thread/dbf67fe/controller/logs/screen-q-svc.txt
  relevant request: req-739334e4-46ac-4806-b8b1-8b362587ebb1
  when the BW limit is added to the policy (which was added to the external network before), it generates a transaction with 16 commands to the OVN NB DB, including two UpdateLSwitchPortQosOptionsCommand's

  test fails:
  https://storage.bhs.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_6b9/939519/1/check/whitebox-neutron-tempest-plugin-ovn-single-thread/6b9ce99/controller/logs/screen-q-svc.txt
  relevant request: req-75cfa10b-f983-4756-982b-239b7c4caab6
  when the BW limit is added to the policy (which was added to the external network before), it generates a transaction with 13 commands to the OVN NB DB. No UpdateLSwitchPortQosOptionsCommand's at all

  It seems to me the following patch, which was merged on Jan 7th, could have caused this regression:
  https://review.opendev.org/c/openstack/neutron/+/934418

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