[Bug] Cannot disable logging with config.txt

[jperez-droneup]

Describe the bug

When running a docker image of PX4, we add a etc/config.txt with the following content: param set-default SDLOG_MODE -1 This is consistent with instructions on how to set default parameters and the parameter itself. However, when PX4 starts up, we still get logs:

INFO  [logger] logger started (mode=all)
INFO  [logger] Start file log (type: full)
INFO  [logger] [logger] ./log/2023-07-26/18_52_18.ulg
INFO  [logger] Opened full log file: ./log/2023-07-26/18_52_18.ulg

To Reproduce

• DONT_RUN=1 make px4_sitl_default gazebo_typhoon_h480 - to build
• Copy /etc/config.txt
• make px4_sitl gazebo_typhoon_h480 - to run

Expected behavior

No logging

Screenshot / Media

No response

Flight Log

_____  __   __    ___ 
| ___ \ \ \ / /   /   |
| |_/ /  \ V /   / /| |
|  __/   /   \  / /_| |
| |     / /^\ \ \___  |
\_|     \/   \/     |_/

px4 starting.

INFO  [px4] Calling startup script: /bin/sh etc/init.d-posix/rcS 0
INFO  [init] found model autostart file as SYS_AUTOSTART=6011
INFO  [param] selected parameter default file eeprom/parameters_6011
[param] parameter file not found, creating eeprom/parameters_6011
  SYS_AUTOCONFIG: curr: 0 -> new: 1
  SYS_AUTOSTART: curr: 0 -> new: 6011
  CAL_ACC0_ID: curr: 0 -> new: 1310988
  CAL_GYRO0_ID: curr: 0 -> new: 1310988
  CAL_ACC1_ID: curr: 0 -> new: 1310996
  CAL_GYRO1_ID: curr: 0 -> new: 1310996
  CAL_ACC2_ID: curr: 0 -> new: 1311004
  CAL_GYRO2_ID: curr: 0 -> new: 1311004
* CAL_MAG0_ID: curr: 0 -> new: 197388
* CAL_MAG1_ID: curr: 0 -> new: 197644
* SENS_BOARD_X_OFF: curr: 0.0000 -> new: 0.0000
* SENS_DPRES_OFF: curr: 0.0000 -> new: 0.0010
* SYS_AUTOCONFIG: curr: 1 -> new: 0
* IMU_INTEG_RATE: curr: 200 -> new: 250
INFO  [dataman] data manager file './dataman' size is 7866640 bytes
PX4 SIM HOST: localhost
INFO  [simulator] Waiting for simulator to accept connection on TCP port 4560
INFO  [simulator] Simulator connected on TCP port 4560.
INFO  [commander] LED: open /dev/led0 failed (22)
* PWM_AUX_OUT: curr: 0 -> new: 1234
* PWM_MAIN_OUT: curr: 0 -> new: 1234
INFO  [init] Mixer: etc/mixers/hexa_x.main.mix on /dev/pwm_output0
INFO  [init] setting PWM_AUX_OUT none
INFO  [mavlink] mode: Normal, data rate: 4000000 B/s on udp port 18570 remote port 14550
INFO  [mavlink] mode: Onboard, data rate: 4000000 B/s on udp port 14580 remote port 14540
INFO  [mavlink] mode: Onboard, data rate: 4000 B/s on udp port 14280 remote port 14030
INFO  [mavlink] mode: Gimbal, data rate: 400000 B/s on udp port 13030 remote port 13280
INFO  [mavlink] mode: Onboard, data rate: 4000 B/s on udp port 14558 remote port 14530
INFO  [logger] logger started (mode=all)
INFO  [logger] Start file log (type: full)
INFO  [logger] [logger] ./log/2023-07-26/18_52_18.ulg
INFO  [logger] Opened full log file: ./log/2023-07-26/18_52_18.ulg

Software Version

Stable Release v1.13.3

Flight controller

no controller

Vehicle type

Multicopter

How are the different components wired up (including port information)

No response

Additional context

No response

[akontsevich]

So if we copy config.txt to PX4-Autopilot/build/px4_sitl_default/etc/:

COPY ./config.txt /PX4-Autopilot/build/px4_sitl_default/etc/config.txt

then it has no effect.

And if we copy it to /PX4-Autopilot/build/px4_sitl_default/tmp/rootfs/etc/:

COPY ./config.txt /PX4-Autopilot/build/px4_sitl_default/tmp/rootfs/etc/config.txt

it seems taken into account, but we got other error:

SITL COMMAND: "/PX4-Autopilot/build/px4_sitl_default/bin/px4" -d "/PX4-Autopilot/build/px4_sitl_default"/etc -s etc/init.d-posix/rcS -t "/PX4-Autopilot"/test_data
ERROR [px4] Error opening startup file, does not exist: etc/init.d-posix/rcS

Any workarounds?