How do I get a VM to see USB devices? If I understand it correctly I have to go to Edit VM -> Console and enable USB native. I have the console options set to use usb. However, I'm finding conflicting information. Supposedly libvirt will allow sharing of a USB device over a network but to start with I'd be happy just being able to connect a usb device to the host and having it detected. I have some programmable devices I'd like to program in Linux using my VM. Has anyone uses usbip and if so how well does it work?
Hi You can attach host device directly from virtual machines tab -> select VM -> host devices sub tab -> "add device" button. But first you need to verify your BIOS is supporting intel VT-d or AMD vi. And you also need to activate it in the kernel. The next link describes how to do it: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/htm... note: Instead of adding "intel_iommu=pt" in the grub cmdline, add "intel_iommu=on" or "amd_iommu=on". Another thing worth mentioning, USB hotplug is not supported yet, so if your programmable device is resetting the USB connection each time you program it, the USB will be detached from the VM and you will have to attach it again in order to see it. On Sun, May 15, 2016 at 8:34 AM, Brett I. Holcomb <biholcomb@l1049h.com> wrote:
How do I get a VM to see USB devices? If I understand it correctly I have to go to Edit VM -> Console and enable USB native. I have the console options set to use usb. However, I'm finding conflicting information. Supposedly libvirt will allow sharing of a USB device over a network but to start with I'd be happy just being able to connect a usb device to the host and having it detected. I have some programmable devices I'd like to program in Linux using my VM.
Has anyone uses usbip and if so how well does it work?
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Nisim Simsolo QE -Testing Engineer IRC: nsimsolo int phone - 8272305 mobile - 054-4779934
----- Original Message -----
From: "Nisim Simsolo" <nsimsolo@redhat.com> To: biholcomb@l1049h.com Cc: users@ovirt.org Sent: Sunday, May 15, 2016 1:40:07 PM Subject: Re: [ovirt-users] USB
Hi
You can attach host device directly from virtual machines tab -> select VM -> host devices sub tab -> "add device" button.
But first you need to verify your BIOS is supporting intel VT-d or AMD vi. And you also need to activate it in the kernel. The next link describes how to do it: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/htm...
note: Instead of adding "intel_iommu=pt" in the grub cmdline, add "intel_iommu=on" or "amd_iommu=on".
Another thing worth mentioning, USB hotplug is not supported yet, so if your programmable device is resetting the USB connection each time you program it, the USB will be detached from the VM and you will have to attach it again in order to see it.
USB passthrough does not require IOMMU, only PCI devices do. The docs need improvement in that regard.
On Sun, May 15, 2016 at 8:34 AM, Brett I. Holcomb <biholcomb@l1049h.com> wrote:
How do I get a VM to see USB devices? If I understand it correctly I have to go to Edit VM -> Console and enable USB native. I have the console options set to use usb. However, I'm finding conflicting information. Supposedly libvirt will allow sharing of a USB device over a network but to start with I'd be happy just being able to connect a usb device to the host and having it detected. I have some programmable devices I'd like to program in Linux using my VM.
Has anyone uses usbip and if so how well does it work?
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Nisim Simsolo QE -Testing Engineer IRC: nsimsolo int phone - 8272305 mobile - 054-4779934
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Sun, 2016-05-15 at 14:40 +0300, Nisim Simsolo wrote:
Hi
You can attach host device directly from virtual machines tab -> select VM -> host devices sub tab -> "add device" button.
But first you need to verify your BIOS is supporting intel VT-d or AMD vi. And you also need to activate it in the kernel. The next link describes how to do it: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linu x/7/html/Virtualization_Deployment_and_Administration_Guide/chap- Guest_virtual_machine_device_configuration.html#sect- Guest_virtual_machine_device_configuration-PCI_devices
note: Instead of adding "intel_iommu=pt" in the grub cmdline, add "intel_iommu=on" or "amd_iommu=on".
Thank you Nsim and Martin. I'll give that a try. As a point of information has anyone tried USB/IP or Incentives Pro?
participants (3)
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Brett I. Holcomb -
Martin Polednik -
Nisim Simsolo