[Users] OpenVZ guest device passthrough

[John Knight]

Hi Charles,

I've just tested with the latest 2.6.32 development branch of openvz (of 
which the proxmox kernel definitely has some version of the patch used 
to create it from vanilla 2.6.32) and was able to pass along a usb hub 
to a container using my previous method.

Hopefully you won't have any issues.  If you do, let me know, I'd love 
to help solve any issues you have with openvz.

since redhat enterprise linux 6 just came out, I imagine the openvz team 
is working hard to make sure the 2.6.32 branch gets a lot more love and 
becomes fully supported.  there's already a testing branch which I 
haven't been able to test yet (still doing some testing specifically for 
the 2.6.32 kernel that's shipping in rhel6), but I'm confident that 
openvz support is going to be amazing in newer distros.

Thank you,

John Knight
Aretta Communications

On 11/21/2010 11:00 PM, Charles N Wyble wrote:
> Hello,
>
> I've been happily using openvz and proxmox (with only openvz guests) 
> for some time now.  Thank you very much for the fantastic work!
>
> I have a desire to pass through some PCI and USB devices to a USB 
> guest. Is this possible? I read the man page for vzctl and saw
>
>   --devnodes device:[r][w][q]|none
>               Give  the  container  an access (r - read, w - write, q 
> - disk quota management, none - no access) to a device designated by 
> the special file /dev/device. Device file is created in a container by 
> vzctl. Example: vzctl set 777 --devnodes sdb:rwq.
>
>
> but this seemed oriented towards disk drives. I'm not sure how to 
> reference a PCI or USB device.
>
> Searching around the net, I saw that KVM seems to support USB/PCI 
> passthrough. Does OpenVZ (or I should say proxmox with kernel
> Linux knel-prod-proxmox2 2.6.32-4-pve #1 SMP Thu Oct 21 09:35:29 CEST 
> 2010 x86_64 GNU/Linux) support arbitrary device pass through?
>
> Thanks!
>
> Please let me know if any additional information is required.
>
>
>
>
> -- 
> Charles N Wyble
> (818)280-7059 charles at knownelement.com
> President & CEO Known Element Enterprises
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