> Subject: Re: [Xen-devel] Ongoing issue with libvirt-xen driver for Openstack Nova
> From: ian.campbell@citrix.com
> To: bderzhavets@hotmail.com
> CC: anthony.perard@citrix.com; xen-devel@lists.xen.org
> Date: Thu, 16 Apr 2015 11:35:38 +0100
> 
> On Thu, 2015-04-16 at 06:26 -0400, Boris Derzhavets wrote:
> 
> _Please stop top posting_.
> 
> http://www.idallen.com/topposting.html
> 
> > Done
> 
> Was this just the tail of the log or the complete thing?


No it was in the middle . I am attaching xen-hotplug.log.gz


> 
> > RTNETLINK answers: Device or resource busy
> > ++ fatal ip link set vif1.0 name 'tapc32a6b48-25 failed'
> > ++ _xenstore_write backend/vif/1/0/hotplug-error 'ip link set vif1.0 name tapc32a6b48-25 failed' backend/vif/1/0/hotplug-status error
> > ++ log debug 'Writing backend/vif/1/0/hotplug-error' 'ip link set vif1.0 name tapc32a6b48-25 failed' backend/vif/1/0/hotplug-status 'error to xenstore.'
> 
> So for some reason the hotplug script has been unable to rename the
> interface, apparently because it is busy.
> 
> Based on some local experiments it seems that busy might be because the
> interface has already been brought up. vif-bridge is changing the name
> before bringing up the interface, perhaps something else in your system
> (some bit of openstack perhaps) is also trying to manage this device and
> has configured it?
> 
> I'm out of my depth wrt the openstack side of things now I'm afraid.
> 
> Ian.
>