OMV 4.1.35-1 on Debian 9.5, MiniDLNA 3.3.11
The problem is that the cache file /var/cache/minidlna/files.db is reset after system restart (plus art_ache directory disappears as well). Also, MiniDLNA is even not doing scan automatically after the system restart.
Can I stop this from happening somehow? I restart the system daily, so this is an issue 
Regards,
Hi,
Did meet similar issue of empty minidlna db on system restart.
In my case it was because minidlna.service start too earlier. Before my filesystem owning media files was actually mounted:
Dec 22 07:53:08 nas.local systemd[1]: Starting MiniDLNA lightweight DLNA/UPnP-AV server...
Dec 22 07:53:12 nas.local minidlnad[588]: [2020/12/22 07:53:12] minidlna.c:631: error: Media directory "A,/srv/dev-disk-by-label-MEDIA/music/" not accessible [No such file or directory]
Dec 22 07:53:12 nas.local minidlnad[588]: [2020/12/22 07:53:12] minidlna.c:631: error: Media directory "V,/srv/dev-disk-by-label-MEDIA/video/" not accessible [No such file or directory]
Dec 22 07:53:12 nas.local systemd[1]: Started MiniDLNA lightweight DLNA/UPnP-AV server.
...
Dec 22 07:53:12 nas.local systemd[1]: Mounting /srv/dev-disk-by-label-MEDIA...
Dec 22 07:53:12 nas.local systemd[1]: Mounted /srv/dev-disk-by-label-MEDIA.To fix it, just ask systemd to wait for the mount before starting minidlna service (using"RequiresMountsFor" option)... 
sudo systemctl edit minidlna.service
# add following lines to supercharge (override) /lib/systemd/system/minidlna.service
[Unit]
RequiresMountsFor=/srv/dev-disk-by-label-MEDIA
# on save you should have override.conf file in /etc/systemd/system/minidlna.service.d (line 13: 'Drop-In:')
sudo systemctl restart minidlna.service
systemctl status minidlna.service
● minidlna.service - MiniDLNA lightweight DLNA/UPnP-AV server
Loaded: loaded (/lib/systemd/system/minidlna.service; enabled; vendor preset: enabled)
Drop-In: /etc/systemd/system/minidlna.service.d
└─override.conf
Active: active (running) since Tue 2020-12-22 15:34:57 CET; 5s ago
...Please note, this would need to be manually updated on config changes. Alternatively, it is possible to use a more generic delay such as sleeping for 30 sec...
[Service]
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