The old "level <severity>” command has moved to "log level <severity>"
A new “log file <path>” command has been added. For example “log file /sd/log.txt” will mean that anything that gets logged to the console will also get appended to /sd/log.txt as well, until reboot. You can use /sd (if SD CARD is working for you), or /store (but take care - that is system flash).
You should be able to hook this in at the “sd.mounted” event script, to turn on logging to sd card on boot (again, if SD CARD is working for you).

Enjoy, Mark

Branch: refs/heads/master
Home:   https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3
Commit: 6947670e33823dd68d4bf76b7872518fc8398264
     https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/commit/6947670e33823dd68d4bf76b7872518fc8398264
Author: Mark Webb-Johnson <mark@webb-johnson.net>
Date:   2018-01-08 (Mon, 08 Jan 2018)

Changed paths:
   M vehicle/OVMS.V3/main/console_async.cpp
   M vehicle/OVMS.V3/main/ovms_command.cpp
   M vehicle/OVMS.V3/main/ovms_log.h
   M vehicle/OVMS.V3/main/ovms_main.cpp

Log Message:
-----------
Add support for "log file ..." to log to the specified vfs file