[Bug 1374663] [NEW] agent/linux/ip_lib.py does not correctly handle output from 'iproute2' command

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Ubuntu Foundations Team Bug Bot (crichton):

[Impact]

 * The get_devices() method in neutron/agent/linux/ip_lib.py chokes if 'iproute2' presents interface names containing '@', such as ipip tunnels and macvlan devices:
  
		tunl0 at NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default
		clone at eth0: <BROADCAST,MULTICAST> mtu 1454 qdisc noop state DOWN mode DEFAULT
        
  * The mere presence of one of the above interface names will cause the
    code to fail with:

		RuntimeError:
		Command: ['ip', 'addr', 'show', 'tunl0 at NONE']
		Exit code: 1
		Stdout: ''
		Stderr: 'Device "tunl0 at NONE" does not exist.\n'


[Test Case]

 * This has been seen in the vpn_agent.log after upgrading to a xenial kernel (4.4.0-45-generic) in a trusty/icehouse environment.
   
    /var/log/neutron/vpn_agent.log:
    ERROR neutron.agent.linux.interface [-] Failed unplugging interface   'qg-e75da35-63 at if10' 


[Regression Potential]

  * iproute2 is still used, however, a search path was added
(/sys/class/net) which returns the interfaces without the '@'.

  * This has been fixed since Kilo so there is minimal regression
potential.


[ Other Info ]

  *

** Affects: cloud-archive
     Importance: Undecided
         Status: New

** Affects: neutron
     Importance: Undecided
     Assignee: Matthew Thode (prometheanfire)
         Status: Fix Released

** Affects: neutron (Ubuntu)
     Importance: Undecided
     Assignee: Shane Peters (shaner)
         Status: New


** Tags: patch sts
-- 
agent/linux/ip_lib.py does not correctly handle output from 'iproute2' command
https://bugs.launchpad.net/bugs/1374663
You received this bug notification because you are a member of Ubuntu Sponsors Team, which is subscribed to the bug report.