Serial port not detected for ZWave-JS UI

[mrbernnz]

Describe the issue
Did a install for a privileged ZWave-JS UI lxc. The USB Drives are present. The lxc conf file looks fine. Running ls -l /dev/serial/by-id returns empty.

Screenshots
The device of interest is in red asterisks.

• USB Device List

(HOST)
root@pve-home:~# lsusb
Bus 002 Device 002: ID 0bc2:ac41 Seagate RSS LLC One Touch HDD
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 10c4:ea60 **Silicon Labs CP210x UART Bridge**
Bus 001 Device 003: ID 8087:0026 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

• LXC conf file

(HOST)
arch: amd64
cores: 2
features: nesting=1
hostname: zwave-js-ui
memory: 1024
net0: name=eth0,bridge=vmbr0,hwaddr=72:4B:ED:2F:5D:C2,ip=dhcp,type=veth
onboot: 1
ostype: debian
rootfs: local-lvm:vm-101-disk-0,size=4G
swap: 512
lxc.cgroup2.devices.allow: a
lxc.cap.drop: 
lxc.cgroup2.devices.allow: c 188:* rwm
lxc.cgroup2.devices.allow: c 189:* rwm
lxc.mount.entry: /dev/serial/by-id  dev/serial/by-id  none bind,optional,create=dir
lxc.mount.entry: /dev/ttyUSB0       dev/ttyUSB0       none bind,optional,create=file
lxc.mount.entry: /dev/ttyUSB1       dev/ttyUSB1       none bind,optional,create=file
lxc.mount.entry: /dev/ttyACM0       dev/ttyACM0       none bind,optional,create=file
lxc.mount.entry: /dev/ttyACM1       dev/ttyACM1       none bind,optional,create=file
lxc.cgroup2.devices.allow: c 189:1 rwm

(LXC)
root@zwave-js-ui:~# ls -l /dev/ttyUSB0
---------- 1 root root 0 Apr  8 16:07 /dev/ttyUSB0
root@zwave-js-ui:~# ls -l /dev/ttyUSB1
---------- 1 root root 0 Apr  8 16:07 /dev/ttyUSB1
root@zwave-js-ui:~# ls -l /dev/ttyACM0
---------- 1 root root 0 Apr  8 16:07 /dev/ttyACM0
root@zwave-js-ui:~# ls -l /dev/ttyACM1
---------- 1 root root 0 Apr  8 16:07 /dev/ttyACM1

(LXC)
root@zwave-js-ui:~# ls -l /dev/serial/by-id
total 0
root@zwave-js-ui:~# 

Bug reports will be closed after 12 hours of NO activity.

[tteck]

This may be worth a try:

Remove this from the LXC conf file (reboot)

lxc.cgroup2.devices.allow: c 188:* rwm
lxc.cgroup2.devices.allow: c 189:* rwm
lxc.mount.entry: /dev/serial/by-id  dev/serial/by-id  none bind,optional,create=dir
lxc.mount.entry: /dev/ttyUSB0       dev/ttyUSB0       none bind,optional,create=file
lxc.mount.entry: /dev/ttyUSB1       dev/ttyUSB1       none bind,optional,create=file
lxc.mount.entry: /dev/ttyACM0       dev/ttyACM0       none bind,optional,create=file
lxc.mount.entry: /dev/ttyACM1       dev/ttyACM1       none bind,optional,create=file
lxc.cgroup2.devices.allow: c 189:1 rwm

then run this in the Proxmox Shell. (replace 101 with your LXC ID)

bash -c "$(wget -qLO - https://github.com/tteck/Proxmox/raw/main/misc/usb-passthrough.sh)" -s 101

Reboot the LXC to apply the changes

[tteck]

Output from the Proxmox shell after running the command ls -l /dev/serial/by-id

root@server:~# ls -l /dev/serial/by-id
total 0
lrwxrwxrwx 1 root root 13 Apr  3 17:09 usb-Silicon_Labs_CP2102N_USB_to_UART_Bridge_Controller_a4766cbfb593eb11b7611b4f3d9-if00-port0 -> ../../ttyUSB0
root@server:~# 

Output from the Zigbee2MQTT LXC console (not running Zwave, but USB pass-through is the same) after running the command ls -l /dev/serial/by-id

root@zigbee2mqtt:~# ls -l /dev/serial/by-id
total 0
lrwxrwxrwx 1 root root 13 Apr  3 17:09 usb-Silicon_Labs_CP2102N_USB_to_UART_Bridge_Controller_a4766cbfb593eb11b7611b4f3d9-if00-port0 -> ../../ttyUSB0
root@zigbee2mqtt:~# 

[mrbernnz]

I received this:

root@zwave-js-ui:~# ls -l /dev/serial/by-id
ls: cannot access '/dev/serial/by-id': No such file or directory

The conf file is updated to this

arch: amd64
cores: 2
features: nesting=1
hostname: zwave-js-ui
memory: 1024
net0: name=eth0,bridge=vmbr0,hwaddr=EE:BC:20:96:B0:46,ip=dhcp,type=veth
onboot: 1
ostype: debian
rootfs: local-lvm:vm-101-disk-0,size=4G
swap: 512
lxc.cgroup2.devices.allow: a
lxc.cap.drop: 
lxc.autodev: 1
lxc.hook.autodev: bash -c 'for char_dev in $(find /sys/dev/char -regextype sed  -regex ".*/166:.*" -o -regex ".*/188:.*" -o -regex ".*/189:.*"); do  dev="/dev/$(sed -n "/DEVNAME/ s/^.*=\(.*\)$/\1/p" ${char_dev}/uevent)";  mkdir -p $(dirname ${LXC_ROOTFS_MOUNT}${dev});  for link in $(udevadm info --query=property $dev | sed -n "s/DEVLINKS=//p"); do    mkdir -p ${LXC_ROOTFS_MOUNT}$(dirname $link);    cp -dpR $link ${LXC_ROOTFS_MOUNT}${link};  done;  cp -dpR $dev ${LXC_ROOTFS_MOUNT}${dev};done;'

[mrbernnz]

@tteck is there any other options?

[tteck]

Before passing it to the LXC, you need to ensure that the device is visible in the Proxmox VE shell.

[mrbernnz]

Found my issue. I assigned the usb to VM. Thanks for your help.