Arch Linux

This is still broken as of Oct-15th.

If you add User=x and/or Group=x to minidlna.service, where x is a different user than nobody, the service will fail to run unless /var/cache/minidlna is chown'd to x:x and the service is restarted.

After a reboot, the owner of /var/cache/minidlna changes to nobody:nobody, even though user/group x:x is defined in minidlna.service.

I'm not sure what's causing the change in ownership (service shutdown, something during reboot?)

If you change user in .service file you must change it in /usr/lib/tmpfiles.d/minidlna.conf

I have same issue described here.
When service start minidlna server start but files over the net are inaccessible

I've solved...

_____________/usr/lib/systemd/system/minidlna-fix.service_________________
[Unit]
Description=miniDLNA
After=network.target

[Service]
Type=forking
ExecStart=/usr/sbin/minidlna -f /etc/minidlna.conf

[Install]
WantedBy=multi-user.target
____________________________________________________________________________


instead


________________/usr/lib/systemd/system/minidlna.service____________________

[Unit]
Description=minidlna server
After=network.target

[Service]
Type=forking
User=nobody
ExecStart=/usr/sbin/minidlna -P /var/run/minidlna/minidlna.pid
PIDFile=/var/run/minidlna/minidlna.pid

[Install]
WantedBy=multi-user.target
________________________________________________________________________________

I don't know why...

Because of you started it as root. Did you check file permissions?

yes... but permission of what?
Library? Binary?

Owner and permission of /var/cache/minidlna and folder that you share.

[diego@ippocrate ~]$ cd /var/cache/minidlna/
[diego@ippocrate minidlna]$ ls -alt
totale 784
-rw-r--r-- 1 root root 22159 15 apr 13.30 minidlna.log
-rw-r--r-- 1 root root 765952 15 apr 13.30 files.db
drwxr-xr-x 2 nobody nobody 4096 14 apr 14.46 .
drwxr-xr-x 8 root root 4096 12 apr 18.58 ..
[diego@ippocrate minidlna]$ cd /mnt/media/Video/
[diego@ippocrate Video]$ ls -alt
totale 24
drwxrwxrwx 5 root root 4096 14 apr 16.18 ..
drwx------ 17 diego users 4096 14 apr 14.50 Film
drwx------ 7 diego users 4096 13 apr 18.22 Cartoni animati
drwxr-xr-x 6 diego users 4096 12 apr 20.03 .
drwx------ 3 diego users 4096 12 apr 17.26 TV
drwx------ 2 diego users 4096 12 apr 17.25 Musica
[diego@ippocrate Video]$

minidlna starts from nobody user by default however your library owned by diego and has no access for other users.

It is not a bug, you can modify .service and tmpfiles.d config according to your needs.