samba - May 2018 - Samba 4.8.1: spotlight enabled share can not connect to Tracker

Hi,

this is the error message I do receive:

Tracker-Message: 14:15:22.884: Could not get mtime for
'file:///nonexistent/.cache/tracker/meta.db': Error when getting
information for file “/nonexistent/.cache/tracker/meta.db”: No such file or
directory
(process:5229): Tracker-WARNING **: 14:15:22.884: Falling back to bus backend,
the direct backend failed to initialize: Could not open sqlite3
database:'/nonexistent/.cache/tracker/meta.db': unable to open database
file

I compiled samba 4.8.1 and current github master with --enable-spotlight,
installed Tracker according to the spotlight Wiki. I only needed to change the
Tracker Systemd Unit Files to match the correct path of the wrapper, e.g.
"Exec=/usr/libexec/tracker-wrapper tracker-extract".

Tracker is working as user mdssvc. I can search from command line.

So far I found that the above path "/nonexistent" is the home
directory of the user connecting to the samba share. I would expect
"/home/mdssvc" here.

My questions are:
	- Is the problem based on the fact that samba can not connect to Tracker via
dbus? (TRACKER_BUS_TYPE=system is set)
	- How can I set the users mdssvc home directory to be used for the database
access?


Thanks for your help and best regards,
Dirk

--
Dirk Köppen <dirk at koeppen.name>
PGP: D66A AF85 5DD9 EBE3 4539 90EF B815 3E77 7E40 5904