Created
January 19, 2022 19:43
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LXC USB Passthrough (Proxmox)
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| 1. Plug USB device | |
| root@proxmox01:~# lsusb | |
| [...] | |
| Bus 004 Device 005: ID 0658:0200 Sigma Designs, Inc. | |
| [...] | |
| 2. Take a look of device | |
| root@proxmox01:~# ls -l /dev/bus/usb/004/005 | |
| crw-rw-r-- 1 root root 189, 388 Oct 25 16:19 /dev/bus/usb/004/005 | |
| Take note of ID (example: 189, 388) | |
| 3. Edit lxc configuration | |
| root@proxmox01:~# nano /etc/pve/nodes/proxmox01/lxc/101.conf | |
| lxc.cgroup.devices.allow: c 189:388 rwm | |
| lxc.mount.entry: /dev/bus/usb/004/005 dev/bus/usb/004/005 none bind,optional,create=file |
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https://gist.github.com/Yub0/518097e1a9d179dba19a787b462f7dd2#gistcomment-2625690
A little bit more detailed version of the same:
Stop the LXC CT.
# pct stop 102Then inspect log for this CT.
# cat /var/log/lxc/102.logNow, disconnect USB device from host and then:
# lsusbBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Now connect device and list devices again, here my device is Bus 002 Device 005: ID 0c4b:0600 Reiner SCT Kartensysteme GmbH.
# lsusbBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 005: ID 0c4b:0600 Reiner SCT Kartensysteme GmbH
Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
5. Now, by taking the Bus and Device from the previous output.
# ls -l /dev/bus/usb/002/005crw-rw-rw- 1 root root 189, 132 Jun 20 22:39 /dev/bus/usb/002/005
Edit the following file, appending the following at the end. Here 002, 005 and 189 were taken from the previous outputs.
# cat /etc/pve/lxc/102.conf...
lxc.cgroup.devices.allow: c 189:* rwm
lxc.mount.entry: /dev/bus/usb/002/005 dev/bus/usb/002/005 none bind,optional,create=file
Start the CT with the following command:
# pct start 102Then inspect the log again. If there are no new errors there the passthrough worked.
# cat /var/log/lxc/102.log