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Hi Arnaud:

Those parameters should be set in nova.conf, in the "os_vif_XXX" section
[1].

"network_device_mtu" is deprecated. The interface MTU is retrieved from the
network MTU. "ovs_vsctl_timeout" is deprecated too, we don't use vsctl
commands anymore.

Maybe Nova folks can extend my answer.

Regards.

[1]
https://github.com/openstack/nova/blob/50fdbc752a9ca9c31488140ef2997ed59d861a41/releasenotes/notes/libvirt-uses-os-vif-plugins-31a0617de0c248b9.yaml


On Fri, Mar 4, 2022 at 6:18 PM Arnaud Morin <arnaud.morin at gmail.com> wrote:

> Hey all,
>
> When I take a look at [1], I can see some parameters, such as
> network_device_mtu, isolate_vif, etc.
>
> As far as I can tell, nova is using these params when plugging the port
> in OVS (if using OVS as ml2 plugin of course).
>
> But I cannot find the config params in the documentation: [2]
>
> Am I missing something?
>
> Cheers,
> Arnaud.
>
> [1] https://github.com/openstack/os-vif/blob/master/vif_plug_ovs/ovs.py
> [2] https://docs.openstack.org/nova/latest/configuration/config.html
>
>
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