I just tried to add a device to syncthing-android. I got the little black message thing saying:
Failed to create a Syncthing config. Please check the logs.
I use version 0.9.3 on Moto G titan rooted stock Android 6. To collect a log I ran logcat in root adb shell (running adb shell logcat didn’t work as logcat never terminates?) and copied it over: log.txt (667.8 KB). I have almost no android knowledge, so no idea what this might be about. I found
which are either the same thing or related (or not at all). Can an android dev tell me how to proceed to produce most useful information for you. Or if this is irrelevant, please say so too, then I can start trying to solve this the messy way - thanks.
Just in case anyone has the same problem: My solution was to use XPosed with https://github.com/pylerSM/XInternalSD which (as a side effect) grants all apps access to the extern sd card. So syncthing folders on external sd card runs happily (well, it uses up tons of resources even when idle, but that’s ok as I don’t run it permanently).