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Hello Piotr:

Maybe you should update the pyroute2 library, but this is a blind shot.

What I recommend you do is to find the error you have when retrieving the
interface VFs. In the same compute node, use this method [1] but remove the
decorator [2]. Then, in a root shell, run python again:
  >>> from neutron.privileged.agent.linux import ip_lib
  >>> ip_lib.get_link_vfs('ens2f0', '')

That will execute the pyroute2 code without the privsep decorator. You'll
see what error is returning the method.

Regards.

[1]
https://github.com/openstack/neutron/blob/5d4f5d42d0a8c7ee157912cb29cae0e4deff984b/neutron/privileged/agent/linux/ip_lib.py#L396-L410
[2]
https://github.com/openstack/neutron/blob/5d4f5d42d0a8c7ee157912cb29cae0e4deff984b/neutron/privileged/agent/linux/ip_lib.py#L395


On Mon, May 31, 2021 at 5:50 PM <forums at mossakowski.ch> wrote:

> Hello,
> I have two victoria environments:
> 1) a working one, standard setup with separate dedicated interface for
> sriov (pt0 and pt1)
> 2) a broken one, where I'm trying to reuse one of already used interfaces
> (ens2f0 or ens2f1) for sriov. ens2f0 is used for several VLANs (mgmt and
> storage) and ens2f1 is a neutron external interface which I bridged for
> VLAN tenant networks. On both I have enabled 63 VFs, it's a standard intetl
> 10Gb x540 adapter.
>
> On broken environment, when I'm trying to boot a VM with sriov port that I
> created before, I see this error shown on below gist:
> https://gist.github.com/moss2k13/8e6272cbe7748b2c5210fab291360e0b
>
> I'm investigating this for couple days now but I'm out of ideas so I'd
> like to ask for your support. Is this possible to achieve what I'm trying
> to do on 2nd environment? To use PF as normal interface and use its VFs for
> sriov-agent at the same time?
>
> Regards,
> Piotr Mossakowski
>
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