Hi

On Wed, May 27, 2020 at 11:18 AM Jun Piao <piaojun@huawei.com> wrote:

> Hi Marc-André,
>
> I encounter a problem when trying to use vhost-user-gpu as below. And
> I'm not familiar to the libvirt code. Could you please help find out
> the reason?
>
> # virsh create snap1.xml
> error: Failed to create domain from snap1.xml
> error: operation failed: Unable to find a satisfying vhost-user-gpu
>
>
Libvirt implements the logic described in:
https://git.qemu.org/?p=qemu.git;a=blob;f=docs/interop/vhost-user.json;h=ef8ac5941f5c8d14402566a984a0a0876d768c19;hb=HEAD#l171

Check if you have  /usr/share/qemu/vhost-user/50-qemu-gpu.json and if the
binary location is correct.

If it fails after that, enable libvirt debugging for more details.

hope that helps

qemu-4.1.1:
>   # ./vhost-user-gpu -v -s /home/vgpu.sock -r /dev/dri/renderD128
>
> libvirt-5.8.0:
>     <graphics type='spice' port='5901' tlsPort='5903' autoport='yes'>
>       <listen type='socket' socket='/tmp/spice.socket1'/>
>       <gl enable='yes' rendernode='/dev/dri/renderD128'/>
>     </graphics>
>     <video model='virtio'>
>       <driver name='vhostuser'/>
>       <acceleration accel3d='yes' rendernode='/dev/dri/renderD128'/>
>     </video>
>
> thanks,
> Jun
>
>

-- 
Marc-André Lureau