[OVN] "neutron-ovn-tempest-ovs-master-fedora" CI job failing since 2021-08-24

[Rodolfo Alonso]

"neutron-ovn-tempest-ovs-master-fedora" CI job failing since 2021-08-24: https://zuul.opendev.org/t/openstack/builds?job_name=neutron-ovn-tempest-ovs-master-fedora

E.g.: https://b04c51a8d6744f0f5554-3f411ee28045e7c41608c6d36a93ae2a.ssl.cf1.rackcdn.com/periodic/opendev.org/openstack/neutron/master/neutron-ovn-tempest-ovs-master-fedora/003ab49/testr_results.html

The failing tests are always the same ones.

[Rodolfo Alonso (rodolfo-alonso-hernandez)]

In OVN, when a new network and the first subnet are created, a metadata port is created (with an IP address assigned). This is not happening with other ML2 drivers.

The method "_check_network_internal_connectivity" [1] retrieves the network ports (that belong to a project) and filters those ones with "device_owner" "network:xxx" and "compute:xxx". From this list we need to remove the metadata ports; the "device_owner" of the metadata ports is "network:distributed" [2][3].

[1]https://github.com/openstack/tempest/blob/393e94a604f29940025c2c2d8f406419e7733e5c/tempest/scenario/test_network_basic_ops.py#L332-L338
[2]https://review.opendev.org/c/openstack/neutron-lib/+/732141
[3]https://review.opendev.org/c/openstack/neutron/+/732364

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/tempest/+/808081

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/808109

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/neutron/+/808109
Committed: https://opendev.org/openstack/neutron/commit/421dc2195c7e47c8793e25a2d26e15e0b982f35e
Submitter: "Zuul (22348)"
Branch: master

commit 421dc2195c7e47c8793e25a2d26e15e0b982f35e
Author: Rodolfo Alonso Hernandez <email address hidden>
Date: Thu Sep 9 16:11:46 2021 +0000

    Redefine "neutron-ovn-tempest-ovs-master-fedora" CI job

    The CI job "neutron-ovn-tempest-ovs-master-fedora" should be the same
    as "neutron-ovn-tempest-ovs-master" but executed in the Fedora nodeset.

    Related-Bug: #1942913
    Change-Id: I89700030dedab33c28baf95993206cf5cdd1e6d6

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/tempest/+/808081
Committed: https://opendev.org/openstack/tempest/commit/17655434ee475cdda4a7408cfe68f63c065fd41d
Submitter: "Zuul (22348)"
Branch: master

commit 17655434ee475cdda4a7408cfe68f63c065fd41d
Author: Rodolfo Alonso Hernandez <email address hidden>
Date: Thu Sep 9 13:55:11 2021 +0000

    [OVN] Remove OVN metadata ports from network port list

    In "_check_network_internal_connectivity", all "network:" and
    "compute:" ports belonging to a network are retrieved. OVN
    metadata ports "network:distributed" should be filtered out because
    are not a DHCP nor L3 ports.

    This port type was introduced in Neutron in [1][2].

    [1]https://review.opendev.org/c/openstack/neutron-lib/+/732141
    [2]https://review.opendev.org/c/openstack/neutron/+/732364

    Partial-Bug: #1942913
    Change-Id: I7db94247c55f9ac39e3e30a4195cdcda6ed657d7