These tests don't appear to be mocking out their interactions with os-brick correctly leading to it attempting to build unsupported connectors on ppc64el.
https://oplab9.parqtec.unicamp.br/pub/ppc64el/openstack/nova/periodic/openstack-tox-py39/2021-01-19-0058-38c70ae/job-output.txt
2021-01-19 00:57:49.258887 | devstack-focal-test | nova.tests.unit.virt.libvirt.volume.test_nvme.LibvirtNVMEVolumeDriverTestCase.test_libvirt_nvme_driver_disconnect
2021-01-19 00:57:49.258898 | devstack-focal-test | -----------------------------------------------------------------------------------------------------------------
2021-01-19 00:57:49.258909 | devstack-focal-test |
2021-01-19 00:57:49.258919 | devstack-focal-test | Captured traceback:
2021-01-19 00:57:49.258930 | devstack-focal-test | ~~~~~~~~~~~~~~~~~~~
2021-01-19 00:57:49.258942 | devstack-focal-test | Traceback (most recent call last):
2021-01-19 00:57:49.258952 | devstack-focal-test |
2021-01-19 00:57:49.258963 | devstack-focal-test | File "/home/zuul/src/review.openstack.org/openstack/nova/nova/tests/unit/virt/libvirt/volume/test_nvme.py", line 51, in test_libvirt_nvme_driver_disconnect
2021-01-19 00:57:49.258974 | devstack-focal-test | nvme_con = nvme.LibvirtNVMEVolumeDriver(self.connr)
2021-01-19 00:57:49.258985 | devstack-focal-test |
2021-01-19 00:57:49.258995 | devstack-focal-test | File "/home/zuul/src/review.openstack.org/openstack/nova/nova/virt/libvirt/volume/nvme.py", line 34, in __init__
2021-01-19 00:57:49.259006 | devstack-focal-test | self.connector = connector.InitiatorConnector.factory(
2021-01-19 00:57:49.259017 | devstack-focal-test |
2021-01-19 00:57:49.259027 | devstack-focal-test | File "/home/zuul/src/review.openstack.org/openstack/nova/.tox/py39/lib/python3.9/site-packages/os_brick/initiator/connector.py", line 303, in factory
2021-01-19 00:57:49.259039 | devstack-focal-test | raise exception.InvalidConnectorProtocol(msg)
2021-01-19 00:57:49.259050 | devstack-focal-test |
2021-01-19 00:57:49.259060 | devstack-focal-test | os_brick.exception.InvalidConnectorProtocol: Invalid InitiatorConnector protocol specified NVME
https:/