Hello, I am trying to apply suggested patches but after applying some python error codes do not allow neutron services to start. Since my python skill is poor, I wonder if that patches are for python3. I am on centos 7 and (probably???) patches are for centos 8. I also wonder if it possible to upgrade a centos 7 train to centos 8 train without reinstalling all nodes. This could be important for next release upgrade (ussuri, victoria and so on). Ignazio
Il giorno ven 12 mar 2021 alle ore 23:44 Sean Mooney smooney@redhat.com ha scritto:
On Fri, 2021-03-12 at 08:13 +0000, Tobias Urdin wrote:
Hello,
If it's the same as us, then yes, the issue occurs on Train and is not
completely solved yet. there is a downstream bug trackker for this
https://bugzilla.redhat.com/show_bug.cgi?id=1917675
its fixed by a combination of 3 enturon patches and i think 1 nova one
https://review.opendev.org/c/openstack/neutron/+/766277/ https://review.opendev.org/c/openstack/neutron/+/753314/ https://review.opendev.org/c/openstack/neutron/+/640258/
and https://review.opendev.org/c/openstack/nova/+/770745
the first tree neutron patches would fix the evauate case but break live migration the nova patch means live migration will work too although to fully fix the related live migration packet loss issues you need
https://review.opendev.org/c/openstack/nova/+/747454/4 https://review.opendev.org/c/openstack/nova/+/742180/12 to fix live migration with network abckend that dont suppor tmultiple port binding and https://review.opendev.org/c/openstack/nova/+/602432 (the only one not merged yet.) for live migrateon with ovs and hybridg plug=false (e.g. ovs firewall driver, noop or ovn instead of ml2/ovs.
multiple port binding was not actully the reason for this there was a race in neutorn itslef that would have haapend even without multiple port binding between the dhcp agent and l2 agent.
some of those patches have been backported already and all shoudl eventually make ti to train the could be brought to stine potentially if peopel are open to backport/review them.
Best regards