SRIOV - PF / VM that assign to PF does not get vlan tag

[Eran Kuris]

During RFE testing Manage SR-IOV PFs as Neutron ports, I found VM booted with Neutron port vnic_type direct-physical but it does not get access to DHCP server.
The problem is that the PF / VM does not get VLAN tag with the internal vlan.
Workaround :
Enter to the VM via console and set vlan interface.

version RHOS 10
python-neutronclient-4.2.1-0.20160721230146.3b1c538.el7ost.noarch
openstack-neutron-common-9.0.0-0.20160726001729.6a23add.el7ost.noarch
python-neutron-9.0.0-0.20160726001729.6a23add.el7ost.noarch
openstack-neutron-fwaas-9.0.0-0.20160720211704.c3e491c.el7ost.noarch
openstack-neutron-metering-agent-9.0.0-0.20160726001729.6a23add.el7ost.noarch
openstack-neutron-openvswitch-9.0.0-0.20160726001729.6a23add.el7ost.noarch
puppet-neutron-9.1.0-0.20160725142451.4061b39.el7ost.noarch
python-neutron-lib-0.2.1-0.20160726025313.405f896.el7ost.noarch
openstack-neutron-ml2-9.0.0-0.20160726001729.6a23add.el7ost.noarch
openstack-neutron-9.0.0-0.20160726001729.6a23add.el7ost.noarch
openstack-neutron-sriov-nic-agent-9.0.0-0.20160726001729.6a23add.el7ost.noarch

[Armando Migliaccio (armando-migliaccio)]

Steps to repro would be nice.

[Armando Migliaccio (armando-migliaccio)]

@Moshe: any chance you can triage?

[Moshe Levi (moshele)]

Ok, In SR-IOV the vlan tagging is done by libvirt so this may be a nova bug.
I will add this bug to the SR-IOV meeting agenda

[Moshe Levi (moshele)]

This is a bug in nova we should create vlan here https://github.com/openstack/nova/blob/master/nova/virt/libvirt/vif.py#L623-L624
and delete it here https://github.com/openstack/nova/blob/master/nova/virt/libvirt/vif.py#L897-898

[Armando Migliaccio (armando-migliaccio)]

Thanks Moshe!!

[Eran Kuris (ekuris)]

Steps to Reproduce:
1.deploy SRIOV env
2.create port vnic type : direct- physical
3. boot vm
4. the vm is active but no iP addres - no connectivity to DHCP server

[Moshe Levi (moshele)]

@Eran,

Please discard my previous comment.
It is not possible do config the vlan because you pass all the PF to the guest.
The you should create the vlan by himself or cloud init.
I am not aware of easy solution for this.

[Matt Riedemann (mriedem)]

Isn't this issue what this blueprint in nova is aiming to fix?

https://blueprints.launchpad.net/nova/+spec/sriov-pf-passthrough-neutron-port-vlan

[ofer blaut (oblaut)]

yes, seems like the bug was opened few weeks before the blueprint was suggested.

We can mark it as resolved in Ocata

[Stephen Finucane (stephenfinucane)]

As noted, this is resolved in Ocata. There is an issue with this currently but that's being tracked in #1743458