Plex not auto scanning media

Plex Media Server NAS & Devices
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1

Server: 1.29.2.6364
Synology DS1520
plex not auto scanning media.
I have been adding tv series to the server, but it’s not triggering anything to make auto scan.
If I manually do the SCAN LIBRARY FILES, they scans and adds the files.

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Now here’s the weird thing… I add movies, music. Auto scanned worked. but when i started adding tv series. not auto scanning.

2

You’re describing what happens when you have more folders than DSM can monitor without slight customization.

To verify.

  1. DEBUG server logging on, VERBOSE logging off, SAVE if changed
  2. Restart PMS
  3. Wait 3-4 minutes (give it time to finish initialization)
  4. Download the logs ZIP file
  5. Open the ZIP and inspect “Plex Media Server.log”
  6. Search for ‘No space left on device’ . It’ll occur on a ‘Notify’ event record.

If this is the case, follow this procedure.

3

That worked for me.
Auto scanning again
thank you

4

Advisory:

Be careful of how much you allocate there.

Each one is 540 bytes + number of characters in each full directory path.

Given a typical pathname on Synology can be 150 characters,

540 + 150 = 690 bytes.

690 bytes * 524288 slots (512k) = 360 MB of RAM assigned to the kernel which can’t be used for anything else.

On NAS systems with 8GB, this usually isn’t a concern.

On smaller systems with 1-2 GB, this is a very serious concern.

I usually recommend increments of 32768 added to the default 65536.
It keeps memory aligned and allows room to grow

5

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