USB to serial device passthrough

BigTimer

New Member
Sep 22, 2009
19
0
1
Hello everyone,

I run pve 4.1-26 (kernel 4.2.6-1-pve) with 1 KVM guest (Windows Server 2008 R2).

I have a couple of USB dongles that must be passed through to the guest devices. The problem is that, though the dongles have USB interfaces, they are actually serial devices.

When I pass the USB ports to the guest:


Code:
usb1: host=1-9
usb2: host=1-10

But I could not then install the driver inside the guest; I guess the installer was looking for serial devices (COM0, COM1).

I thought I could pass the usb ports, then designate them as serial devices, like so:
usb1: host=1-9
usb2: host=1-10
serial1: /dev/ttyUSB1
serial2: /dev/ttyUSB2

When I started the device, I got the message:
sudo qm start 201
no such serial device

Please help; how may I passthrough these (usb-to-serial) devices?

Thank you.