bdcee6d5e0
In PTGs we talked about that we could have a table of OVS/OVN version requirements. After some grepping in the zuul directory for variables OVS_BRANCH and OVN_BRANCH I came up with the table in this commit. I simplified the results quite a lot, because in 2024.1 and earlier different zuul jobs may have used different OVS/OVN versions, but in the hope that we keep this uniform in the future I only included the versions used in base. Also add an item to the release checklist so we keep this table up to date. Change-Id: I65143e6a6d1273f7b50aafcfe69844b7e7658d04 Signed-off-by: Bence Romsics <bence.romsics@gmail.com>
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Open vSwitch (OVS) and OVN requirements
Neutron uses Open vSwitch with the ML2/openswitch and ML2/ovn mechanism drivers. The latter also uses OVN. These are binary dependencies of a Neutron deployment with some version constraints. In the table below we hope to document the known minimum versions of OVS and OVN per Neutron release. Or at least the minimum versions we know we used in our CI system while developing.
We also have CI jobs to test with the main branch of OVS and OVN therefore we feel no need to document the known maximum versions -the newest OVS/OVN release should work.
Warning
In releases 2024.1 and earlier it happened that different groups of CI jobs (or rather Zuul job templates: base, grenade, rally) used different OVS and OVN versions. Here we document only the base version, that is the version used in single and multinode tempest jobs. Stadium projects like ovn-bgp-agent may also have different requirements.
| OpenStack Release | Neutron Release | OVS_BRANCH |
OVN_BRANCH |
| 2025.2 (flamingo) | 27.0 | branch-3.3 | branch-24.03 |
| 2025.1 (epoxy) | 26.0 | branch-3.3 | branch-24.03 |
| 2024.2 (dalmatian) | 25.0 | branch-3.3 | branch-24.03 |
| 2024.1 (caracal) | 24.0 | a4b04276ab5934d087669ff2d191a23931335c87 | v21.06.0 |
| 2023.1 (antelope) | 22.0 | a4b04276ab5934d087669ff2d191a23931335c87 | v21.06.0 |
| zed | 21.0 | a4b04276ab5934d087669ff2d191a23931335c87 | v21.06.0 |
| yoga | 20.0 | v2.16.0 | v21.06.0 |
| xena | 19.0 | v2.16.0 | v21.06.0 |
| wallaby | 18.0 | 0047ca3a0290f1ef954f2c76b31477cf4b9755f5 | v20.06.1 |
| victoria | 17.0 | 51e9479da62edb04a5be47a7655de75c299b9fa1 | v20.06.1 |