Fails to attach VF to KVM instance

[Yoshi Kadokawa]

When creating a KVM instance with an SR-IOV interface, the VM will be created but no interface is attached.
Assuming from /var/log/kern.log it looks like it is failing during attaching VF.
Following is the excerpt from the log, and

Oct 9 06:52:30 hyperconverge002-rack001 kernel: [71117.735178] VFIO - User Level meta-driver version: 0.3
Oct 9 06:52:31 hyperconverge002-rack001 kernel: [71118.221853] i40e 0000:af:00.1: Setting MAC fa:16:3e:18:53:cf on VF 62
Oct 9 06:52:31 hyperconverge002-rack001 kernel: [71118.426878] i40e 0000:af:00.1: Reload the VF driver to make this change effective.
Oct 9 06:52:31 hyperconverge002-rack001 kernel: [71118.426933] i40e 0000:af:00.1: Setting VLAN 9, QOS 0x0 on VF 62
Oct 9 06:52:31 hyperconverge002-rack001 kernel: [71118.576429] audit: type=1400 audit(1570603951.429:104): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="libvirt-5d854c7a-d048-4c29-9eec-fa681fdca47a" pid=1598355 comm="apparmor_parser"
Oct 9 06:52:31 hyperconverge002-rack001 kernel: [71118.722293] audit: type=1400 audit(1570603951.573:105): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="libvirt-5d854c7a-d048-4c29-9eec-fa681fdca47a" pid=1598358 comm="apparmor_parser"
Oct 9 06:52:31 hyperconverge002-rack001 kernel: [71118.871748] audit: type=1400 audit(1570603951.725:106): apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="libvirt-5d854c7a-d048-4c29-9eec-fa681fdca47a" pid=1598361 comm="apparmor_parser"
Oct 9 06:52:32 hyperconverge002-rack001 kernel: [71119.896031] vfio-pci 0000:af:11.6: enabling device (0000 -> 0002)
Oct 9 06:52:32 hyperconverge002-rack001 kernel: [71120.007212] vfio-pci 0000:af:11.7: enabling device (0000 -> 0002)
Oct 9 06:52:33 hyperconverge002-rack001 kernel: [71120.308116] i40e 0000:af:00.1: VF 62 still in reset. Try again.

The last error says that the VF is still in reset state, and according to this[0],
it looks like an race condition(wait 300ms for VF reset to complete) between attaching the VF and resetting the VF state.

The environment, that is being used is:
OpenStack Queens on Ubuntu Bionic
kernel: 4.15.0-65-generic
NIC: Intel X710 10GbE SFP+
driver: i40e v2.1.14-k

[0] https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic/tree/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c#n2916

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.