[SOLVED] Hypervisor, Aeotec USB Stick device ID changes itself

Setup, Configuration and Use Installation
1

I know it’s more a OS topic, but I can’t find the solution on google.
I’ve installed Ubuntu with KVM as hypervisor and openhab in a VM, also on Ubuntu.
then I run “lsusb” to see:

lsusb
Bus 003 Device 006: ID 0658:0200 Sigma Designs, Inc.

I add the device with “sudo virsh edit openHAB” somewhere within “devices”:

<hostdev mode='subsystem' type='usb' managed='yes'>
    <source>
      <vendor id='0x0658'/>
      <product id='0x0200'/>
    </source>
  </hostdev>

strange, I do not see the USB stick when I start openHAB. so I manually attach the USB stick via the virsh-manager GUI and can then see the stick in openhab. I can include zwave devices, works fine for some time.
but somewhen I receive the following message and zwave stops to work:

2019-01-14 17:22:01.171 [ERROR] [ing.zwave.handler.ZWaveSerialHandler] - Got I/O exception Input/output error in writeArray during sending. exiting thread.

I figured out that the device ID on the hypervisor for the USB Stick changed:

Bus 003 Device 007: ID 0658:0200 Sigma Designs, Inc.

how can I make the device ID persistent for the virtual machine?

2

Take your favorite search engine and look for usb passthrough

3

already tried usb passthrough, the problem is somewhere else.
on the host I see:

matthias@homeserver:~$ lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
    |__ Port 1: Dev 9, If 0, Class=Communications, Driver=usbfs, 12M
    |__ Port 1: Dev 9, If 1, Class=CDC Data, Driver=usbfs, 12M

when I assign it to the VM it shows up with:

matthias@openhab:~$ lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
    |__ Port 1: Dev 2, If 0, Class=Communications, Driver=cdc_acm, 12M
    |__ Port 1: Dev 2, If 1, Class=CDC Data, Driver=cdc_acm, 12M

is it ok that the VM uses different drivers? are these usb 2.0 drivers?
when the problem occurs I see on the host the following dmesg message:

[  743.929434] usb 3-1: reset full-speed USB device number 9 using xhci_hcd
[  804.654686] usb usb3-port1: disabled by hub (EMI?), re-enabling...
[  804.654757] usb 3-1: USB disconnect, device number 9
[  804.928175] usb 3-1: new full-speed USB device number 10 using xhci_hcd
[  805.077207] usb 3-1: New USB device found, idVendor=0658, idProduct=0200
[  805.077212] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[  805.078031] cdc_acm 3-1:1.0: ttyACM0: USB ACM device

then, on the openHAB VM the usb-stick device disappers:

matthias@openhab:~$ lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
matthias@openhab:~$

any idea what could be wrong?

4

In all the years I’ve been supporting OH on this forum, this is the first I’ve seen mention working with KVM. I think you will have much better luck posting to a KVM forum. This isn’t an OH problem and I don’t think there is anyone here with experience on KVM who can help.

5

It seems that your hosts resets the USB stick - something it should not do. Maybe try another USB (root) Port.

I have been using OH on a KVM machine and never had that problem - nowadays I only use LXC Containers so I don’t know how to have a USB passthrough wich always points to the same /dev/ devices.

6

it was indeed a host issue. I updated the laptops firmware and the failure is gone. all is fine… thanks