MediaMon

File monitor and auto-indexer for Synology DiskStation NAS.

I'm using this on a DS213j, but I expect it may work on other models as well.

Updated for DSM 6.0+. May still work on earlier DSM versions, but I can't vouch for that.

Usage

1. Install Python3 from the DiskStation package manager.
2. Copy mediamon.py and S99mediamon.sh to your admin user's homedir (i.e. /volume1/homes/admin/): scp *.{py,sh} admin@192.168.1.20:~.
3. SSH into your DiskStation as admin (e.g. ssh admin@192.168.1.20 -- use the right IP address for your DiskStation) and sudo su - to become the root user. This will require re-entering your admin user's password.

4. Install pyinotify:

   python3 -m ensurepip
   python3 -m pip install pyinotify

   Test that pyinotify works:

   python3 -m pyinotify -v /tmp

5. Copy S99mediamon.sh to the DiskStation's /usr/local/etc/rc.d/ directory, with 0755 permissions: cp /volume1/homes/admin/S99mediamon.sh /usr/local/etc/rc.d/ && chmod 755 /usr/local/etc/rc.d/S99mediamon.sh.
6. Restart your Synology (if you want to verify that the mediamon service will start up automatically in the future), or start it up yourself: /usr/local/etc/rc.d/S99mediamon.sh start.
7. Add some media files to /volume1/photo, /volume1/music, or /volume1/video, and check the log at /var/log/mediamon.log to verify that it's working. You should see a synoindex -a entry for each added file.

Caveats

If you have a lot of files/directories in some watched volumes, you may see "No space on device" errors from pyinotify. This doesn't actually have to do with space on the drive, it means you're hitting the watched-files limit. You can increase this limit by running (as root): echo fs.inotify.max_user_watches=100000 | sudo tee -a /etc/sysctl.conf; sudo sysctl -p.

Suggestions, improvements, bug reports or pull requests welcome!

Credits

Based on a blog post.