Jim Fehlig wrote:

> Per Jessen wrote:
>> Per Jessen wrote:
>>
>>   
>>> My xen host is openSUSE 13.2.
>>>
>>> I have one guest running currently. I created a second guest to
>>> install 13.2 and ran "xl create".
>>>
>>> This appears to have brought down the interface (vif10) for the
>>> existing guest ??
>>>
>>> 9: vif10: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN
>>> group default qlen 512
>>>     link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
>>>
>>>     
>>
>> I'm not certain but this seems to be related to me having chosen
>> "vif10"
>> and "vif11" as the interface names.  On a second try, when I omitted
>> the interface name for the new guest, the new interface was
>> named "vif11.0" and did not interfere with vif10.
> 
> I don't see your problem on an updated 13.2 Xen host.  I started two
> PV domains with 'vifname=vif10' and 'vifname=vif11' in their
> respective 'vif = [...]' config.  The vif device of the first domain
> (vif10) remains up and continues to work when starting the second
> domain containing vif11.

Interesting. 

> Are your domains PV or HVM? 

They're PV. 

> Can you provide the vif config for the domains? 

Typically :
vif = [ 'vifname=vif10,bridge=xenbr1,mac=00:11:27:00:00:05' ]

> Does /var/log/messages contain any hint about who (or what) 
> is bringing down the vif?

Thanks for suggesting that, yes, there's quite a bit of output
from /etc/xen/scripts/vif-bridge. 

I've put the log here:
http://files.jessen.ch/airbus-vif10-log.txt

I'm not sure, but this is what it looks like:

at 11:19:41 I attempt to create a new guest, unfortunately without
having changed the vifname in the config. It looks like this leaves
vif10 disabled:

Feb  3 11:19:43 airbus kernel: xenbr1: port 2(vif10) entered disabled
state
Feb  3 11:19:41 airbus root: /etc/xen/scripts/vif-bridge: Successful
vif-bridge offline for vif10, bridge xenbr1.

At 11:20:08 I've corrected my mistake and create the new guest with
vifname=vif11. There's a bit of up and down, but vif10 remains down
which I discover some time later. 

It is odd that an existing vif should be taken down just because I tried
to create a new guest with the same vifname, but is it worth writing a
bugreport for?



-- 
Per Jessen, Zürich (-2.2°C)
http://www.dns24.ch/ - your free DNS host, made in Switzerland.

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