Can not attach SR-IOV port to a VM instance

[Alexander Rubtsov]

--- Environment ---
Release: MOS 9.2

--- Steps to reproduce ---
1) Create a test VM instance
# nova list
+--------------------------------------+------------+--------+------------+-------------+---------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+------------+--------+------------+-------------+---------------------+
| d76d9e19-d460-4872-ad79-92d68c6387e8 | test-sriov | ACTIVE | - | Running | SRIOVNet1=10.0.10.4 |
+--------------------------------------+------------+--------+------------+-------------+---------------------+

2) Create a new SR-IOV port:
# neutron port-create SRIOVNet2 --name SRIOVPort2 --binding:vnic-type direct
Created a new port:
+-----------------------+----------------------------------------------------------------------------------+
| Field | Value |
+-----------------------+----------------------------------------------------------------------------------+
.....
| id | 5b24dd2c-39a8-4399-98d4-33ce1eb6202c .....
+-----------------------+----------------------------------------------------------------------------------+

3) Attach the created port to the VM instance:
# nova interface-attach --port-id 5b24dd2c-39a8-4399-98d4-33ce1eb6202c test-sriov

--- Actual result ---
ERROR (ClientException): Failed to attach network adapter device to d76d9e19-d460-4872-ad79-92d68c6387e8 (HTTP 500) (Request-ID: req-f2040baf-177b-40a9-bb32-f4e2b9b1d20c)

compute-0-4.domain.tld nova-compute[6048]: 2018-09-04 14:13:42.734 6048 ERROR oslo_messaging.rpc.dispatcher [req-f2040baf-177b-40a9-bb32-f4e2b9b1d20c 817c4f7821ca4ca780389df9b5caecd4 b9df06b46a5d4ae88ba1e5f44d1f8c5b - - -] Exception during message handling: Failed to attach network adapter device to d76d9e19-d460-4872-ad79-92d68c6387e8
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 138, in _dispatch_and_reply
    incoming.message))
  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 185, in _dispatch
    return self._do_dispatch(endpoint, method, ctxt, args)
  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 127, in _do_dispatch
    result = func(ctxt, **new_args)
  File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 114, in wrapped
    payload)
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
    self.force_reraise()
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
    six.reraise(self.type_, self.value, self.tb)
  File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 89, in wrapped
    return f(self, context, *args, **kw)
  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 387, in decorated_function
    kwargs['instance'], e, sys.exc_info())
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
    self.force_reraise()
  File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
    six.reraise(self.type_, self.value, self.tb)
  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 375, in decorated_function
    return function(self, context, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 5144, in attach_interface
    instance_uuid=instance.uuid)
InterfaceAttachFailed: Failed to attach network adapter device to d76d9e19-d460-4872-ad79-92d68c6387e8

--- Expected result ---
The interface has been successfully attached

[Alexander Rubtsov (arubtsov)]

sla1 for 9.0-updates

[Denis Meltsaykin (dmeltsaykin)]

Alexander, do you have the diagnostic snapshot from the environment.

[Alexander Rubtsov (arubtsov)]

Denis,
Please review whether the information that I have provided to you privately is enough or not.

[Denis Meltsaykin (dmeltsaykin)]

Alexander, we have a standard "diagnostic snapshot" method. Please provide the diagnostic snapshot.

[Alexander Rubtsov (arubtsov)]

The diagnostic snapshot has been provided

[Denis Meltsaykin (dmeltsaykin)]

Alexander, the errors in logs look pretty generic without any real details. Did you follow https://docs.openstack.org/mitaka/networking-guide/config-sriov.html when installed SR-IOV support for Mitaka?

[Denis Meltsaykin (dmeltsaykin)]

Alexander, attaching SR-IOV ports to a running VM is not supported in OpenStack. You can find more details in https://blueprints.launchpad.net/nova/+spec/sriov-interface-attach-detach. Closing as Invalid.