On 03/30/2016 04:49 AM, Sven Kieske wrote:

On 29/03/16 22:03, Robert Nichols wrote:

...

I suspect I know the answer here, but is qemu-kvm-0.12 simply incapable of passing a USB 3.0 device to a guest? USB 2 devices work fine, but USB 3 -- nothing. USB 3.0 works fine in the host, of course.

Currently using qemu-kvm-0.12.1.2-2.479.el6_7.4.x86_64 in CentOS 6.7.

I'm guessing I have to upgrade to CentOS 7 to pass USB 3.0 devices to the guest. Hoping to avoid that just now.

A quick search for "rhel usb 3 support kvm" leads to this article:

http://www.tecmint.com/redhat-enterprise-linux-7-1-installation/

citing:

"USB 3.0 support enabled in KVM as Technology Preview."

also, reading the release notes of upstream might help:

https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/htm...

if you CTRL+F "usb 3" you can read:

USB 3.0 host adapter (xHCI) emulation for KVM guests remains a Technology Preview in Red Hat Enterprise Linux 7.2.

so it is available but not fully supported.

Thanks for the info. I hadn't gotten to the point of looking into what the support was/wasn't for USB 3 virtualization in RHEL 7. Looks like I can delay my upgrade at least until RHEL 7.3 appears.