Do use fsassets, do not store assets in mariadb. Mariadb needs to be set for ACID mode else shutdown may lose data. Terriible databases. It can take up to five minutes for Opensim to flush assets t...
If you simple restart machine last changes will NOT be saved!!!
To move cache content to database and save always must exit with "quit" command from OpenSIM console, wait to make all saves.
For help ...
I'm no expert but I have had it where changes have not been saved when shutting down. Specially if the changes were recent. I changed to the region in question and typed backup in the console to force...