yahoo-eng-team team mailing list archive

[Lars Kellogg-Stedman <lars@xxxxxxxxxx>]

Public bug reported:

On Fedora 20, neutron-openvswitch-agent fails to start with the
following error:

2014-06-05 16:15:55.379 5266 TRACE
neutron.plugins.openvswitch.agent.ovs_neutron_agent SystemError: Unable
to determine kernel version for Open vSwitch with VXLAN support. To use
VXLAN tunnels with OVS, please ensure that the version is 1.10 or newer!

In neutron/agent/linux/ovs_lib.py, the code is attempting to determine
the installed version of the openvswitch module by calling:

  modinfo openvswitch

It's looking for a line containing "version: ", but "modinfo" produces
no such line; the output looks like this:

filename:       /lib/modules/3.11.10-301.fc20.x86_64/kernel/net/openvswitch/openvswitch.ko
license:        GPL
description:    Open vSwitch switching datapath
depends:        gre
intree:         Y
vermagic:       3.11.10-301.fc20.x86_64 SMP mod_unload 
signer:         Fedora kernel signing key
sig_key:        03:59:1D:C5:7A:69:07:41:40:1A:1C:20:2E:2B:3D:9F:4F:ED:2A:0E
sig_hashalgo:   sha256

We can fix this by also looking at the "vermagic: " line, but I question
whether this test should even be here.  The output of "modinfo" wasn't
designed to be machine parse-able, and it is demonstrably not stable.

** Affects: neutron
     Importance: Undecided
     Assignee: Lars Kellogg-Stedman (larsks)
         Status: In Progress

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1326907

Title:
  neutron-openvswitch-agent on fedora 20: SystemError: Unable to
  determine kernel version for Open vSwitch with VXLAN support.

Status in OpenStack Neutron (virtual network service):
  In Progress

Bug description:
  On Fedora 20, neutron-openvswitch-agent fails to start with the
  following error:

  2014-06-05 16:15:55.379 5266 TRACE
  neutron.plugins.openvswitch.agent.ovs_neutron_agent SystemError:
  Unable to determine kernel version for Open vSwitch with VXLAN
  support. To use VXLAN tunnels with OVS, please ensure that the version
  is 1.10 or newer!

  In neutron/agent/linux/ovs_lib.py, the code is attempting to determine
  the installed version of the openvswitch module by calling:

    modinfo openvswitch

  It's looking for a line containing "version: ", but "modinfo" produces
  no such line; the output looks like this:

  filename:       /lib/modules/3.11.10-301.fc20.x86_64/kernel/net/openvswitch/openvswitch.ko
  license:        GPL
  description:    Open vSwitch switching datapath
  depends:        gre
  intree:         Y
  vermagic:       3.11.10-301.fc20.x86_64 SMP mod_unload 
  signer:         Fedora kernel signing key
  sig_key:        03:59:1D:C5:7A:69:07:41:40:1A:1C:20:2E:2B:3D:9F:4F:ED:2A:0E
  sig_hashalgo:   sha256

  We can fix this by also looking at the "vermagic: " line, but I
  question whether this test should even be here.  The output of
  "modinfo" wasn't designed to be machine parse-able, and it is
  demonstrably not stable.

To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/1326907/+subscriptions