[stein][neutron] gratuitous arp

Ignazio Cassano ignaziocassano at gmail.com
Fri May 14 06:02:06 UTC 2021


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 at 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
>
>
>
>
>
>
>
>
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