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Re: [libvirt] LXC: autostart feature does set all interfaces to state up.



Richard,

I think you should have cc'd the bug assignee when discussing this issue
upstream.  Adding him now...

Regards,
Jim


Daniel P. Berrange wrote:
> On Wed, Jul 17, 2013 at 11:33:22PM +0200, Richard Weinberger wrote:
>   
>> Am 12.07.2013 03:36, schrieb Gao feng:
>>     
>>> On 07/11/2013 07:58 PM, Richard Weinberger wrote:
>>>       
>>>> Am 11.07.2013 11:49, schrieb Daniel P. Berrange:
>>>>         
>>>>> On Thu, Jul 11, 2013 at 11:44:48AM +0200, Richard Weinberger wrote:
>>>>>           
>>>>>> Am 11.07.2013 11:42, schrieb Gao feng:
>>>>>>             
>>>>>>> On 07/11/2013 03:18 PM, Richard Weinberger wrote:
>>>>>>>               
>>>>>>>> This morning I've installed a wrapper around ip to show me the process tree upon ip link ... down is used.
>>>>>>>> The log showed this:
>>>>>>>>
>>>>>>>>   769 ?        Ss     0:00 /usr/lib/systemd/systemd-udevd
>>>>>>>> 17759 ?        S      0:00  \_ /usr/lib/systemd/systemd-udevd
>>>>>>>> 17764 ?        S      0:00  \_ /usr/lib/systemd/systemd-udevd
>>>>>>>> 17772 ?        S      0:00  \_ /usr/lib/systemd/systemd-udevd
>>>>>>>> 19477 ?        S      0:00  |   \_ /bin/bash /sbin/ifdown veth5 -o hotplug
>>>>>>>> 19910 ?        S      0:00  |       \_ /sbin/ip link set dev veth5 down
>>>>>>>>
>>>>>>>> Now I have to urge to use a "Kantholz". ;-)
>>>>>>>>
>>>>>>>>                 
>>>>>>> hmmm...
>>>>>>>
>>>>>>> it's systemd... I have no idea now... :(
>>>>>>>               
>>>>>> TBH it is not systemd's fault.
>>>>>> OpenSUSE's /usr/lib/udev/rules.d/77-network.rules did not white list veth* devices.
>>>>>> Therefore systemd-udevd called ifup/down and other hotplug magic.
>>>>>>             
>>>>> Ah ha, that's a nice issue :-) I assume you've filed a bug against opensuse
>>>>> to fix this ? Can you post a link to the bug here for the sake of archive
>>>>> records.
>>>>>           
>>>> Sure:
>>>> https://bugzilla.novell.com/show_bug.cgi?id=829033
>>>>
>>>>         
>>> It's good news we know what causes veth device down. :)
>>>       
>> How does Fedora deal with veth devices?
>>     
>
> Well the udev script you mention above does not exist on Fedora and AFAIK
> there's no other udev script which runs 'ifconfig down' on NICs.
>
>   
>> SUSE folks think that this is a more likely a libvirt issue and closed my bug report as invalid...
>>     
>
> If you remove or modify the 77-network.rules file does it fix the problem.
> If so, then it is obviously not a libvirt issue.  IMHO it is completely
> bogus for udev to be arbitrarily ifdown'ing any interface.
>
> Daniel
>   


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