[Rdo-list] Trying out Neutron Quickstart running into issues with netns (l2 agent and dhcp agent)

[Perry Myers]

On 08/05/2013 04:27 AM, Thomas Graf wrote:
> On 08/04/2013 05:47 PM, Kashyap Chamarthy wrote:
>>>> 2013-08-04 09:08:05  WARNING [quantum.openstack.common.loopingcall]
>>>> task run outlasted interval by 56.853869 sec
>>>> 2013-08-04 09:08:06     INFO [quantum.agent.dhcp_agent]
>>>> Synchronizing state
>>>> 2013-08-04 09:32:34    ERROR [quantum.agent.dhcp_agent] Unable to
>>>> enable dhcp.
>>>> Traceback (most recent call last):
>>>>    File
>>>> "/usr/lib/python2.6/site-packages/quantum/agent/dhcp_agent.py", line
>>>> 131, in call_driver
>>>>      getattr(driver, action)()
>>>>    File
>>>> "/usr/lib/python2.6/site-packages/quantum/agent/linux/dhcp.py", line
>>>> 124, in enable
>>>>      reuse_existing=True)
>>>>    File
>>>> "/usr/lib/python2.6/site-packages/quantum/agent/dhcp_agent.py", line
>>>> 554, in setup
>>>>      namespace=namespace)
>>>>    File
>>>> "/usr/lib/python2.6/site-packages/quantum/agent/linux/interface.py",
>>>> line 181, in plug
>>>>      ns_dev.link.set_address(mac_address)
>>>>    File
>>>> "/usr/lib/python2.6/site-packages/quantum/agent/linux/ip_lib.py",
>>>> line 180, in set_address
>>>>      self._as_root('set', self.name, 'address', mac_address)
>>>>    File
>>>> "/usr/lib/python2.6/site-packages/quantum/agent/linux/ip_lib.py",
>>>> line 167, in _as_root
>>>>      kwargs.get('use_root_namespace', False))
>>>>    File
>>>> "/usr/lib/python2.6/site-packages/quantum/agent/linux/ip_lib.py",
>>>> line 47, in _as_root
>>>>      namespace)
>>>>    File
>>>> "/usr/lib/python2.6/site-packages/quantum/agent/linux/ip_lib.py",
>>>> line 58, in _execute
>>>>      root_helper=root_helper)
>>>>    File
>>>> "/usr/lib/python2.6/site-packages/quantum/agent/linux/utils.py",
>>>> line 61, in execute
>>>>      raise RuntimeError(m)
>>>> RuntimeError:
>>>> Command: ['sudo', 'quantum-rootwrap', '/etc/quantum/rootwrap.conf',
>>>> 'ip', 'link', 'set', 'tap07d8cc77-fc', 'address', 'fa:16:3e:da:66:28']
>>>> Exit code: 2
>>>> Stdout: ''
>>>> Stderr: 'RTNETLINK answers: Device or resource busy\n'
> 
> Quantum attempts to change the MAC address while the link is up. The
> live MAC address change feature is not supported in the openstack
> kernel at this point.
> 
> We can attempt a backport of the feature to the openstack kernel and
> enable it for tap and veth devices or we modify quantum to bring down
> the interface before changing the mac address and bring it up again
> afterwards.

Thanks Thomas.  Or perhaps we need a fix to Quantum itself to create the
link with the proper MAC address to begin with rather than changing it
in a second step?

With the above error, I wonder if the Quantum Quickstart ever fully
worked at all on either RHOS or RDO Grizzly?

Terry, how did you work around the above issue when testing on RHOS?

Perry