[Libvirt-cim] LXC on sfcb Test Run Summary for Dec 22 2008

[Kaitlin Rupert]

>>> NETNS support requires a kernel patch (or at least, last time I 
>>> looked).  The kernel for this system doesn't have the proper 
>>> support.  This test needs to SKIP if LXC_netns_support is set to False.
>>>
>> The value of LXC_netns_support is set to false by default in the 
>> const.py. But, I guess this is not the appropriate way for verifying 
>> the NETNS support.
>> Can you help me with the steps for automating the verification of the 
>> NETNS support in the kernel ?
>> I shall update the tc to be skipped as of now for LXC by verifying the 
>> LXC_netns_support variable, we can update the tc to call appropriate 
>> function that verifies the NETNS support once it is in the test suite.
>>
> Is checking for CONFIG_NET_NS=y in the .config file of the kernel, 
> sufficient for verifying the NETNS support ?

You can't guarantee that the running kernel was built with a given 
config. There's a kernel flag that you can enable to store the kernel 
config in /proc/config.gz, but kernels aren't often built with this flag 
set.

libvirt checks the output of "ip --help".  If netns is listed, then both 
ip and the kernel have NETNS support.  You could do a similar check in 
const.py

Thanks!
-- 
Kaitlin Rupert
IBM Linux Technology Center
kaitlin at linux.vnet.ibm.com