The USB section is the same on both guests:

    <controller type='usb' index='0'>
      <alias name='usb0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>

    <hostdev mode='subsystem' type='usb' managed='no'>
      <source>
        <vendor id='0x05dc'/>
        <product id='0xc75c'/>
        <address bus='2' device='10'/>
      </source>
      <alias name='hostdev0'/>
    </hostdev>

I thought it might be a Windows issue, I've tried on both Win7 64 and 2008R2 64 with the same result. At one point there was a notification bubble that the USB device can run faster - which I thought might mean the Windows guest was provided a USB v1 controller.

I've attached both the xml's if you think there might be something I'm not seeing.

Thanks,
Steve


On Tue, Jul 22, 2014 at 9:50 AM, Michal Skrivanek <michal.skrivanek@redhat.com> wrote:

On Jul 22, 2014, at 15:49 , Steve Dainard <sdainard@miovision.com> wrote:

> Hi Michal,
>
> How can I generate libvirt xml from rhevm?

"virsh -r dumpxml <domain>" on the host

Thanks,
michal

>
> Thanks,
> Steve
>
>
> On Tue, Jul 22, 2014 at 4:12 AM, Michal Skrivanek <michal.skrivanek@redhat.com> wrote:
>
> On 21 Jul 2014, at 20:54, Steve Dainard wrote:
>
>> I should mention I can mount this usb drive in a CentOS 6.5 VM without any problems.
>
> Hi,
> there should be no difference configuration-wise. well, please compare libvirt's xml to be sure and confirm
> If it's the case then it might be a problem of qemu/kvm and/or windows
>
> Thanks,
> michal
>
>>
>>
>> On Mon, Jul 21, 2014 at 2:11 PM, Steve Dainard <sdainard@miovision.com> wrote:
>> I'm using the hostusb hook on RHEV 3.4 trial.
>>
>> The usb device is passed through to the VM, but I'm getting errors in a Windows VM when the device driver is loaded.
>>
>> I started with a simple usb drive, on the host it is listed as:
>>
>> Bus 002 Device 010: ID 05dc:c75c Lexar Media, Inc.
>>
>> Which I added as 0x05dc:0xc75c to the Windows 7 x64 VM.
>>
>> In Windows I get an error in device manager:
>> USB Mass Storage Device "This device cannot start. (Code 10)"
>> Properties/General Tab: Device type: Universal Serial Bus Controllers, Manufacturer: Compatible USB storage device, Location: Port_#0001.Hub_#0001
>>
>> Under hardware Ids:
>> USB\VID_05DC&PID_C75C&REV_0102
>> USB\VID_05DC&PID_C75C
>>
>> So it looks like the proper USB device ID is passed to the VM.
>>
>> I don't see any error messages in event viewer, and I don't see anything in VDSM logs either.
>>
>> Any help is appreciated.
>>
>> Steve
>>
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>
>