l3-agent Cannot find device

asked 2013-08-07 10:57:30 -0500

Noriak gravatar image

updated 2013-08-08 17:34:06 -0500

smaffulli gravatar image


I can't find a solution to my problem and after a lot of tests, I can't figure what is wrong.

Each time when I try to associate an external network with a router, the l3-agent got the error in /var/log/quantum/l3-agent.log :

 2013-08-07 17:42:07    ERROR [quantum.agent.l3_agent] Failed synchronizing routers
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/quantum/agent/l3_agent.py", line 638, in _sync_routers_task
    self._process_routers(routers, all_routers=True)
  File "/usr/lib/python2.7/dist-packages/quantum/agent/l3_agent.py", line 621, in _process_routers
  File "/usr/lib/python2.7/dist-packages/quantum/agent/l3_agent.py", line 319, in process_router
    self.external_gateway_added(ri, ex_gw_port, internal_cidrs)
  File "/usr/lib/python2.7/dist-packages/quantum/agent/l3_agent.py", line 410, in external_gateway_added
  File "/usr/lib/python2.7/dist-packages/quantum/agent/linux/interface.py", line 181, in plug
  File "/usr/lib/python2.7/dist-packages/quantum/agent/linux/ip_lib.py", line 180, in set_address
    self._as_root('set', self.name, 'address', mac_address)
  File "/usr/lib/python2.7/dist-packages/quantum/agent/linux/ip_lib.py", line 167, in _as_root
    kwargs.get('use_root_namespace', False))
  File "/usr/lib/python2.7/dist-packages/quantum/agent/linux/ip_lib.py", line 47, in _as_root
  File "/usr/lib/python2.7/dist-packages/quantum/agent/linux/ip_lib.py", line 58, in _execute
  File "/usr/lib/python2.7/dist-packages/quantum/agent/linux/utils.py", line 61, in execute
    raise RuntimeError(m)
Command: ['sudo', 'quantum-rootwrap', '/etc/quantum/rootwrap.conf', 'ip', 'link', 'set', 'qg-fe9adcae-ec', 'address', 'fa:16:3e:67:8f:63']
Exit code: 1
Stdout: ''
Stderr: 'Cannot find device "qg-fe9adcae-ec"\n'

But the port is visible with ovs-vsctl show :

    Bridge br-ex
        Port "qg-fe9adcae-ec"
            Interface "qg-fe9adcae-ec"
                type: internal
        Port "qg-1259372d-e7"
            Interface "qg-1259372d-e7"
                type: internal
        Port br-ex
            Interface br-ex
                type: internal
        Port "eth0"
            Interface "eth0"
    ovs_version: "1.4.0+build0"

My configuration is classic and it's the only error I got in quantum logs.

I try to delete and recreate the bridges but nothing change.

Someone already got this problem ?


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1 answer

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answered 2013-08-09 09:33:46 -0500

Noriak gravatar image

I found my problem.

I create the br-ex bridge with /et/network/interfaces with bridge-ports ethX.

OVS wants to create the bridge, so I put now "/usr/bin/ovs-vsctl add-port br-ex ethX" in /etc/rc.local and it works fine.

Hope it helps ...

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Asked: 2013-08-07 10:57:30 -0500

Seen: 1,185 times

Last updated: Aug 09 '13