Hello: You need to specify two config files: the neutron.conf and the ML2 plugin one; in this case /etc/neutron/plugins/ml2/ml2_conf.ini. Other installers create a ML2 plugin config file per backend but this is not necessary. Regards. On Wed, Dec 30, 2020 at 8:29 AM Slawek Kaplonski <skaplons@redhat.com> wrote:

Hi,

Dnia środa, 30 grudnia 2020 01:07:42 CET Gabriel Omar Gamero Montenegro pisze:

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Dear all,

I'm following the OpenStack guide for the implementation of SR-IOV mechanism driver. I'm planning to incorporate this driver to my current OpenStack deployment (Queens).

Config SR-IOV Guide: https://docs.openstack.org/neutron/queens/admin/config-sriov.html

At point 2, section "Configure neutron-server (Controller)" they said that I have to add the 'plugin.ini' file as a parameter to the neutron-server service. To do this they require to <<edit the appropriate initialization script to configure the neutron-server service to load the plugin configuration file>>: --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini

I'd like to know a few things:

(1) Which plugin.ini file are talking about?

That is IMO good question. I see this file for the first time now :) Looking at the commit [1] and commits which this patch reference to I think that this may be some old leftover which should be cleaned. But maybe Rodolfo will know more as he s our SR-IOV expert in the team.

...

(2) How to set up the neutron-server initialization script to add the plugin.ini file? I understand that this varies between OS distro (I'm currently using Ubuntu 16.04 LTS server)

Here are some things I tried...

I got the following results executing this command:

systemctl status neutron-server.service ● neutron-server.service - OpenStack Neutron Server Loaded: loaded (/lib/systemd/system/neutron-server.service; enabled; vendor preset: enabled) Active: active (running) since Tue 2020-12-29 18:13:50 -05 Main PID: 38590 (neutron-server) Tasks: 44 Memory: 738.8M CPU: 29.322s CGroup: /system.slice/neutron-server.service ├─38590 /usr/bin/python2 /usr/bin/neutron-server --config-file=/etc/neutron/neutron.conf --config-file=/etc/neutron/plugins/ml2/ml2_conf.ini --log-file=/var/log/neutron/neutron-server.log ...

I see 2 things:

(i) When neutron-server is exectured, the following parameters are passed: --config-file=/etc/neutron/neutron.conf --config-file=/etc/neutron/plugins/ml2/ml2_conf.ini --log-file=/var/log/neutron/neutron-server.log

(ii) The file '/lib/systemd/system/neutron-server.service' is loaded and it has the following content: ... ExecStart=/etc/init.d/neutron-server systemd-start ...

This indicates me that it's executing '/etc/init.d/neutron-server' script. So I suppose this is the file indicated to add the parameters of the SR-IOV OpenStack documentation, but I have no idea where to put them.

For Red-Hat distros I found this documentation with the following configuration: https://access.redhat.com/documentation/en-us/ red_hat_enterprise_linux_openstack_platform/7/html/networking_guide /sr-iov-support-for-virtual-networking

vi /usr/lib/systemd/system/neutron-server.service ... ExecStart=/usr/bin/neutron-server --config-file /usr/share/neutron/neutron-dist.conf --config-file /etc/neutron/neutron.conf --config-file /etc/neutron/plugin.ini --config-file /etc/neutron/plugins/ml2/ml2_conf_sriov.ini --log-file /var/log/neutron/server.log

Thanks in advance, Gabriel Gamero

[1] https://github.com/openstack/neutron/commit/ c4e76908ae0d8c1e5bcb7f839df5e22094805299

-- Slawek Kaplonski Principal Software Engineer Red Hat