Public bug reported:
Description
===
This issue applies for systems using SRIOV with Mellanox ASAP2 SDN
offloads.
An SRIOV port capable for ASAP2 SDN acceleration (OVS hardware offloads)
has 'capabilities=[switchdev]' added to the port binding_profile.
After a VM has been created with SRIOV port attached, the port can no
longer be used for subsequent VM builds. Attempt to reuse the port
results in an error of the form "Cannot set interface MAC/vlanid to
/ for ifname ens1f0 vf 7: Operation not supported"
The underlying issue appears to be that when an SRIOV port is detached
from a VM, or the VM is destroyed, the capabilities=[switchdev] property
is removed from the port binding_profile. This converts the port from
ASAP2 to “Legacy SRIOV” (in Mellanox-speak) and makes it unusable.
If the port binding_profile property is restored then the port can be
successfully reused.
The property is preserved during live migration, instance resizes and
rebuilds. It only appears to be instance depletion or port detachment
where the binding_profile property is removed.
Steps to reproduce
==
1. Create SRIOV port with ASAP2 capability:
openstack port create --project --network --vnic-
type=direct --binding-profile '{"capabilities": ["switchdev"]}' sriov-
port-1
2. Check the port binding_profile property:
openstack port show -c binding_profile sriov-port-1
3. Create an instance using the port:
openstack server create --flavor --image --key-name
--nic port-id=sriov-port-1 sriov-vm-1
4. Delete the instance:
openstack server delete sriov-vm-1
5. Check the port binding_profile property:
openstack port show -c binding_profile sriov-port-1
Expected Result
===
Nova sets properties in the binding_profile while the instance is in
use. Alongside those properties the capabilities='['switchdev']'
property should be preserved.
Actual Result
=
After the instance is deleted (or port detached), the binding_profile is
empty.
Environment
===
This has been observed with the following configuration:
- OpenStack Yoga
- OVN Neutron driver
Logs
From Nova Compute:
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest Traceback (most recent
call last):
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest File
"/var/lib/kolla/venv/lib/python3.6/site-packages/nova/virt/libvirt/guest.py",
line 165, in launch
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest return
self._domain.createWithFlags(flags)
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest File
"/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 190,
in doit
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest result =
proxy_call(self._autowrap, f, *args, **kwargs)
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest File
"/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 148,
in proxy_call
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest rv = execute(f,
*args, **kwargs)
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest File
"/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 129,
in execute
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest six.reraise(c, e,
tb)
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest File
"/usr/lib/python3.6/site-packages/six.py", line 703, in reraise
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest raise value
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest File
"/var/lib/kolla/venv/lib/python3.6/site-packages/eventlet/tpool.py", line 83,
in tworker
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest rv = meth(*args,
**kwargs)
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest File
"/usr/lib64/python3.6/site-packages/libvirt.py", line 1385, in createWithFlags
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest raise
libvirtError('virDomainCreateWithFlags() failed')
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest libvirt.libvirtError:
Cannot set interface MAC/vlanid to fa:16:3e:43:1e:ce/2107 for ifname ens1f0 vf
7: Operation not supported
2023-01-24 19:55:32.270 7 ERROR nova.virt.libvirt.guest
2023-01-24 19:55:32.273 7 ERROR nova.virt.libvirt.driver
[req-581cd9e8-11c8-44be-9ed2-a03a5f70d0f4 802a31d98b364da79be43fe6e9566d63
76f401abee7b4e80b7efd86f2f26e3ca - default default] [instance:
d2091824-1f7a-4de1-8776-8f781956130a] Failed to start libvirt guest:
libvirt.libvirtError: Cannot set interface MAC/vlanid to fa:16:3e:43:1e:ce/2107
for ifname ens1f0 vf 7: Operation not supported
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2008238
Title:
SRIOV port binding_profile attributes for OVS hardware offload are
stripped on instance deletion or port detachment
Status
