[lxc-users] passthrough of usb 433mHz transceiver

[Serge Hallyn]

Start by checking the host's syslog (right after reproducing the failure
in the container) and look for DENIED messages.  Report them here.

Then do

strace -f -ostrace.out whatever-command-you-run-that-fails

in the container.  Look at the output of

egrep -e '(EPERM|EACCES)' strace.out

(or send it here)

-serge

Quoting JPS (mailbox at jsierink.nl):
> thanks for the advice but I'm not very skilled in linux, so eacess
> or eperm don't ring a bell.
> Before I used an OpenZV container and that worked fine.
> Unfortunately Proxmox decided to switch to lxc........
> 
> 
> 
> Op di, 13 okt 2015 om 3:55 , schreef Serge Hallyn
> <serge.hallyn at ubuntu.com>:
> >Don't know anything about it, but I'd try stracing the software
> >to see whether there are any EACESS or EPERMs or whether there
> >are any other paths under /dev or /sys which get ENOENT and
> >should be bind-mounted in.
> >
> >Quoting JPS (mailbox at jsierink.nl):
> >> I have a rfxcom 433 mHz transceiver (http://www.rfxcom.com/epages/78165469.sf/nl_NL/?ObjectPath=/Shops/78165469/Products/14103).
> >> It is connected via usb and controls some domotica switches on the
> >> 433mHz frequency.
> >>
> >> In the domotica software is shows up as serial device on
> >>/dev/ttyUSB0
> >>
> >> I can't get it to work properly in a lxc container running debian
> >> jessie.
> >>
> >> I added this to the lxc.conf, but with no luck:
> >> lxc.cgroup.devices.allow: c 189:* rwm
> >> lxc.mount.entry: /dev/bus/usb/002 dev/bus/usb/002 none
> >> bind,optional,create=dir
> >> lxc.mount.entry: /dev/ttyUSB0 dev/ttyUSB0 none
> >>bind,optional,create=file
> >>
> >> Then i gave following command on the host (debian jessie):
> >> lxc-device add -n 112 /dev/ttyUSB0 /dev/ttyUSB0
> >>
> >> Now the device shows up in the lxc container, but now the domotica
> >> software can only transmit signals, not receive.
> >>
> >> On the host:
> >> root at server:~# lsusb
> >> Bus 002 Device 005: ID 0403:6001 Future Technology Devices
> >> International, Ltd FT232 USB-Serial (UART) ICroot at proxmox:~# ls -l
> >>
> >> root at server:~/dev/bus/usb/002/005
> >> crw-rw-r-- 1 root root 189, 132 Oct 10 14:09 /dev/bus/usb/002/005
> >>
> >>
> >> Any idea how to solve this?
> >>
> >> Regards, Jasper
> >
> >> _______________________________________________
> >> lxc-users mailing list
> >> lxc-users at lists.linuxcontainers.org
> >> http://lists.linuxcontainers.org/listinfo/lxc-users
> >
> >_______________________________________________
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> >lxc-users at lists.linuxcontainers.org
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