[one-users] "Inappropriate ioctl for device"

Javier Fontan jfontan at gmail.com
Wed Mar 24 04:17:28 PDT 2010


I've been searching but I cannot find any useful information on that
problem. We've tested libvirt/kvm with more than then 8 VMs per host
and everything worked fine.


On Tue, Mar 16, 2010 at 12:00 AM, Claude Noshpitz
<cnoshpitz at attinteractive.com> wrote:
> Hello,
> I've started to see launch failures recently, as my VM hosts are getting more loaded, that generate oned.log messages like this:
> Mon Mar 15 15:34:13 2010 [VMM][D]: Message received: LOG - 249 error: internal error Failed to add tap interface 'vnet%d' to bridge 'br0' : Inappropriate ioctl for device
> Likely I am missing some documented limitation on the KVM/libvirt or networking side, but it doesn't seem like a hard limit
> on VMs per host (at least, the failures seem to happen with e.g. 5, 6, 7, or 8 VMs on a host).
> Ideas?  RTFMs?
> Thanks!
> --Claude
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Javier Fontan, Grid & Virtualization Technology Engineer/Researcher
DSA Research Group: http://dsa-research.org
Globus GridWay Metascheduler: http://www.GridWay.org
OpenNebula Virtual Infrastructure Engine: http://www.OpenNebula.org

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