lxc device passthrough

10:15 <SoulRaven> i have this usb passthru
10:15 <SoulRaven> https://pastebin.com/8xrB1BTr

lxc.cgroup.devices.allow: c 189:* rwm
lxc.mount.entry: /dev/bus/usb/004/002 dev/bus/usb/004/002 none bind,optional,create=file
lxc.mount.entry: /dev/ttyUSB0 dev/ttyUSB0 none bind,optional,create=file10:15 

10:16 <SoulRaven> for a serial to usb converor
10:16 <SoulRaven> but i can't get it working right
10:16 <SoulRaven> when i do on cat: can't open '/dev/ttyUSB0': Operation not permitted
10:16 <SoulRaven> and also not working on ser2net
10:17 <SoulRaven> or someting similar
10:17 <SoulRaven> i have try with alpine and debian
10:17 <SoulRaven> and nothing
10:17 <SoulRaven> permissions are ok
10:17 <SoulRaven> root:dialout
10:17 <SoulRaven> 666 on /dev/ttyUSB0
10:17 <SoulRaven> i am missing something?
11:35 <@sjas> crw-rw---- 1 root dialout 188, 0 2019-03-17 15:46 /dev/ttyUSB0
11:36 <@sjas> is how the device looks for me
11:36 <@sjas> which i can use via
11:36 <@sjas> sudo screen /dev/ttyUSB0 9600
11:36 <@sjas> or whatever bitrate
11:56 <@sjas> will try this with my own setup, i may need this eventually myself, never did such stuff with LXC
13:03 <@sjas> SoulRaven: i might have a solution for your problem
13:23 <@sjas> scratch that, i have your solution:
13:24 <@sjas> lxc.cgroup.devices.allow = c 188:0 rw
13:24 <@sjas> lxc.mount.entry: /dev/ttyUSB0 dev/ttyUSB0 none bind,optional,create=file
13:26 <@sjas> dont pass the usb device directly like /dev/bus/usb/... , dont chmod around on the host or the vm, absolutely omit the leading slash so the mountpoint in the container is relative (is a must)
13:27 <@sjas> lxc.cgroup.devices.allow is for /dev/ttyUSB0, not /dev/bus/usb/..