I might dare to try that, now as whole device backup works


Scenario;
- backup /home
- reset tracker databases
- check that all messagds are gone
- check the content of /home/user/.cache/tracker
- restore the database only
- check that messages are restored
- if all OK, no need to restore from full backp.

Only problem that I see here is that tracker should be killed while replacing the DB, or else it sure will not work. How to do that safely when running in normal mode?
On the other hand if it is required to boot the device to single user mode to restore the DB it is almost same thing to restore the full backup rathdr than just files under .cache directory...