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TRaSH-Guides/docs/Hardlinks/Hardlinks-and-Instant-Moves.md

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Hardlinks and Instant Moves (Atomic-Moves)

Description

!!! info

If you’re wondering why hard links aren’t working or why a simple move is taking far longer than it should.

Here we will try to explain it.

This Guide exist out of 4 Sections

  1. This page with a short description.
  2. How to setup for your installation method.
  3. Examples what you should use for your path settings in your used applications.
  4. Check if hardlinks are working

So you want one of the following ?

  • Instant moves (Atomic-Moves) during import of the *arr (useful when using Usenet)?
  • You don't want to use twice the storage when using torrents. (hardlinks)?
  • You want to perma seed?

Then Continue to How to setup for your installation method.

FAQ

??? faq "What are hardlinks?"

- [Short answer] Having a file in multiple folders without using double your storage space.
- [Long answer] Hard links are a way for a copy operation to be instant and not consume space for those additional copies. Every file is a hard link: some metadata that points at blocks on the file system, which is why they're restricted to the same file system. There can be as many metadata files pointing at those blocks as needed and the blocks know how many links point to them. Once the blocks have 0 links, they're considered deleted. That means you can delete any "copy" w/o impacting the others. Your download client can remove it's copy w/o impacting the library copy. The library copy can be removed by Plex or Sonarr/Radarr or yourself w/o impacting the download client copy. But space is only regained when all copies are deleted. Of note is that modifying the file will impact all copies. For example, modifying the id3 tags of a .mp3 download after import would modify the download client copy, breaking the torrent.

??? faq "What are Instant Moves (Atomic Moves)?"

A real move and not a copy file from download folder to media folder and then delete file from download folder.

??? faq "What are the *arr?"

Sonarr, Radarr, Lidarr, etc.