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[Bug 1934957] Re: [sriov] Unable to change the VF state for i350 interface

 

We discussed that issue in our team meeting today https://meetings.opendev.org/meetings/networking/2021/networking.2021-07-20-14.00.log.html
Our conclusion is that this is Intel's driver bug and we shouldn't try to fix/workaround it in Neutron. It should be fixed in the driver's code. So I'm going to close this bug.

** Changed in: neutron
       Status: Triaged => Won't Fix

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Title:
  [sriov] Unable to change the VF state for i350 interface

Status in neutron:
  Won't Fix

Bug description:
  When sriov-nic-agent configures VF state, the exception is as follows:
  2021-07-08 06:15:47.773 34 DEBUG oslo.privsep.daemon [-] privsep: Exception during request[139820149013392]: Operation not supported on interface eno4, namespace None. _process_cmd /usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:490
  Traceback (most recent call last):
    File "/usr/local/lib/python3.6/site-packages/neutron/privileged/agent/linux/ip_lib.py", line 263, in _run_iproute_link
      return ip.link(command, index=idx, **kwargs)
    File "/usr/local/lib/python3.6/site-packages/pyroute2/iproute/linux.py", line 1360, in link
      msg_flags=msg_flags)
    File "/usr/local/lib/python3.6/site-packages/pyroute2/netlink/nlsocket.py", line 376, in nlm_request
      return tuple(self._genlm_request(*argv, **kwarg))
    File "/usr/local/lib/python3.6/site-packages/pyroute2/netlink/nlsocket.py", line 869, in nlm_request
      callback=callback):
    File "/usr/local/lib/python3.6/site-packages/pyroute2/netlink/nlsocket.py", line 379, in get
      return tuple(self._genlm_get(*argv, **kwarg))
    File "/usr/local/lib/python3.6/site-packages/pyroute2/netlink/nlsocket.py", line 704, in get
      raise msg['header']['error']
  pyroute2.netlink.exceptions.NetlinkError: (95, 'Operation not supported')

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py", line 485, in _process_cmd
      ret = func(*f_args, **f_kwargs)
    File "/usr/local/lib/python3.6/site-packages/oslo_privsep/priv_context.py", line 249, in _wrap
      return func(*args, **kwargs)
    File "/usr/local/lib/python3.6/site-packages/neutron/privileged/agent/linux/ip_lib.py", line 403, in set_link_vf_feature
      return _run_iproute_link("set", device, namespace=namespace, vf=vf_config)
    File "/usr/local/lib/python3.6/site-packages/neutron/privileged/agent/linux/ip_lib.py", line 265, in _run_iproute_link
      _translate_ip_device_exception(e, device, namespace)
    File "/usr/local/lib/python3.6/site-packages/neutron/privileged/agent/linux/ip_lib.py", line 237, in _translate_ip_device_exception
      namespace=namespace)
  neutron.privileged.agent.linux.ip_lib.InterfaceOperationNotSupported: Operation not supported on interface eno4, namespace None.
  2021-07-08 06:15:47.773 34 DEBUG oslo.privsep.daemon [-] privsep: reply[139820149013392]: (5, 'neutron.privileged.agent.linux.ip_lib.InterfaceOperationNotSupported', ('Operation not supported on interface eno4, namespace None.',)) _call_back /usr/local/lib/python3.6/site-packages/oslo_privsep/daemon.py:511
  2021-07-08 06:15:47.774 24 WARNING neutron.plugins.ml2.drivers.mech_sriov.agent.sriov_nic_agent [req-661d08fb-983f-4632-9eb4-91585a557753 - - - - -] Device fa:16:3e:66:e4:91 does not support state change: neutron.privileged.agent.linux.ip_lib.InterfaceOperationNotSupported: Operation not supported on interface eno4, namespace None.

  But the vm network traffic is no problem. We use i350 interface, and I
  found these discuss about i350[1][2]. This exception is not impact for
  vm traffic, maybe we can ignore it when interface is i350.

  
  [1]https://sourceforge.net/p/e1000/bugs/653/
  [2]https://community.intel.com/t5/Ethernet-Products/On-SRIOV-interface-I350-unable-to-change-the-VF-state-from-auto/td-p/704769

  version:
  neutron-sriov-nic-agent version 17.1.3

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