If I try to enable timeshift in TVH 4.2 it gets disabled again at saving it.
Configuration > Recording > Timeshift > Enabled: > ticked, but gets un-ticked when saved
TVHeadend is running as user root.
I looked at the user config, but don't see if it might be missing something.
# ps -ef | grep -i tvh | grep -v grep
1248 root 7:34 /storage/.kodi/addons/service.tvheadend42/bin/tvheadend -B -C -u root -g video -c /storage/.kodi/userdata/addon_data/service.tvheadend42
Scheduled recordings work fine.
System details:
-Tronsmart Ara X5 Plus, LibreELEC-Generic.x86_64-8.2-devel-20171016
-HTS Tvheadend 4.2.3-20 ~ LibreELEC Tvh-addon v8.2.112
Edit:
Found the solution in another thread on the Kodi forum.
https://forum.kodi.tv/showthread.php?tid=314837
Needed to enable 'Expert' mode first, after that I could enable timeshift. Now it works.