[libvirt-users] vhost-net requested but could not be initialized

Asadullah Hussain asadxflow at gmail.com
Thu Jul 24 10:55:33 UTC 2014


On 24 July 2014 15:52, Daniel P. Berrange <berrange at redhat.com> wrote:

> On Thu, Jul 24, 2014 at 03:48:06PM +0500, Asadullah Hussain wrote:
> > Let me clarify my question, I am using unmodified stock qemu (1.4.0) and
> > only the location of vhost file descriptor is different from default (I
> > don't remove the default /dev/vhost-net directory)
> >
> > The VHOST file descriptor is present in "/dev/vhost-0" directory instead
> of
> > the default "/dev/vhost-net". When I try to give vhostfd in the XML I
> get a
> > different error:
>
> Well I suggest you make your system use the expected device
> name for /dev/vhost-net. Just as libvirt only targets mainline
> QEMU, we only target mainline kernel / standard device layout
>
> ​I was able to change my device name to /dev/vhost-net but still I get the
error, the error itself isn't telling much about the problem:
2014-07-24 10:41:35.970+0000: 3183: error : qemuMonitorOpenUnix:293 :
failed to connect to monitor socket: No such process
2014-07-24 10:41:35.970+0000: 3183: error : qemuProcessWaitForMonitor:1806
: internal error process exited while connecting to monitor:
qemu-system-x86_64: -netdev
type=tap,id=net1,script=no,downscript=no,ifname=port4,vhost=on: vhost-net
requested but could not be initialized
qemu-system-x86_64: -netdev type=tap,id=net1,script=no,
downscript=no,ifname=port4,vhost=on: Device 'tap' could not be initialized​

> Regards,
> Daniel
> --
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>



-- 
Cheers,

Asadullah Hussain
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