Does this offer anything over USB/IP?

k8svet · 2024-04-16T18:36:30 1713292590

I think just that it's plugged in at the SPICE level. So I guess you could redirect a USB device into a guest that isn't running Linux and can't run usb/ip? But also, this is how usb redirection works with virt-viewer/virt-manager, I'm fairly sure.

naikrovek · 2024-04-16T20:22:46 1713298966

USB/IP works fine on Windows and MacOS, though MacOS has no ability to use devices shared by USB/IP; it can only share devices to others.

What is this “SPICE level” you mentioned?

touisteur · 2024-04-16T20:30:22 1713299422

https://www.spice-space.org/spice-user-manual.html that qemu uses a lot.

k8svet · 2024-04-16T20:38:19 1713299899

Imagine you had a qemu/libvirt guest that understands USB, but doesn't have support for USB/IP in "kernel/userspace".

usbredir gets your device to qemu, looking like it's a USB device attached to the VM, without cooperation from the guest.

naikrovek · 2024-04-17T02:51:57 1713322317

“Without cooperation from the guest” is the bit of info I was missing.

Thank you.

touisteur · 2024-04-16T20:31:32 1713299492

Now I'm wondering whether someone has built support for this in rust-vmm...