[ovirt-users] oVirt 3.6.1 USB Host Device passthrough

Michal Skrivanek mskrivan at redhat.com
Wed Dec 23 12:48:58 UTC 2015



> On 23 Dec 2015, at 09:28, ovirt at timmi.org wrote:
> 
> Hi list,
> 
> I'm currently trying to get USB devices into a VM.
> My host is running a oVirt 3.6.1.
> 
> I'm trying to use the GUI feature to add the device into the VM and I'm facing two issues:
> 
> 1. I receive the following message while starting the VM:
> Error while executing action: 
> 
> <VM_Name>:
> Cannot run VM. There is no host that satisfies current scheduling constraints. See below for details:
> The host <host_name> did not satisfy internal filter HostDevice because it does not support host device passthrough..
This will be fixed in 3.6.2. That check only applies to pci passthrough (for now you can enable your host for pci passthrough to unblock the run)
https://bugzilla.redhat.com/show_bug.cgi?id=1283708

> 2. The USB device list never get refreshed while removing or inserting different devices.

Check out http://www.ovirt.org/Features/hostdev_passthrough
It's not really talking about usb....but you can pass the whole controller as well

> 
> Does anyone knows what I'm doing wrong or what I need to check?
> 
> I found for example the following description for oVirt 3.5.
> http://wiki.rosalab.com/en/index.php/Blog:ROSA_Planet/How_to_use_USB_device_inside_VM_under_Rosa_Virtualisation_%28oVirt_3.5%29
> 
> But this is not helping me as I will have multiple USB devices with the same ID in the host.
> 
> Best regards and Merry Christmas
> Christoph
> 
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