libvirt users - Oct 2014 - The USB passthrough that refuses to die

In trying to find out why my usb passthrough is not working, I decided
to edit (virsh edit) the config file for the vm client, removing the
following lines

    <hostdev mode='subsystem' type='usb'
managed='yes'>
      <source>
        <vendor id='0x051d'/>
        <product id='0x0002'/>
      </source>
    </hostdev>

checking with "virsh dumpxml" that the lines went away, and then
restarting

[root@vmhost ~]# virsh start nagios
error: Failed to start domain nagios
error: internal error Did not find USB device 51d:2 bus:2 device:3

[root@vmhost ~]#

As you can see, it is still acting like the usb device is defined.
What am I missing here?

On Fri, Oct 24, 2014 at 4:05 PM, Mauricio Tavares <raubvogel@gmail.com>
wrote:
> In trying to find out why my usb passthrough is not working, I decided
> to edit (virsh edit) the config file for the vm client, removing the
> following lines
>
>     <hostdev mode='subsystem' type='usb'
managed='yes'>
>       <source>
>         <vendor id='0x051d'/>
>         <product id='0x0002'/>
>       </source>
>     </hostdev>
>
> checking with "virsh dumpxml" that the lines went away, and then
restarting
>
> [root@vmhost ~]# virsh start nagios
> error: Failed to start domain nagios
> error: internal error Did not find USB device 51d:2 bus:2 device:3
>
> [root@vmhost ~]#
>
> As you can see, it is still acting like the usb device is defined.
> What am I missing here?
Update: I undefined the vm. Then I recreated it, configuring it to use
the same MAC but did not add the USB passthrough yet.

It started fine. I will later on add the usb stuff.

Thanks for all the help!