You know, ZFS, ButterFS (btrfs…its actually “better” right?), and I’m sure more.

I think I have ext4 on my home computer I installed ubuntu on 5 years ago. How does the choice of file system play a role? Is that old hat now? Surely something like ext4 has its place.

I see a lot of talk around filesystems but Ive never found a great resource that distiguishes them at a level that assumes I dont know much. Can anyone give some insight on how file systems work and why these new filesystems, that appear to be highlights and selling points in most distros, are better than older ones?

Edit: and since we are talking about filesystems, it might be nice to describe or mention how concepts like RAID or LUKS are related.

  • Chewy
    link
    fedilink
    2
    edit-2
    6 months ago

    Interesting. f2fs supports file-based encryption and compression. It is designed for flash and is used for many smartphones.

    • Chris
      link
      fedilink
      English
      16 months ago

      What I missed mentioning is it does wear-levelling so as its name suggests it is “flash friendly” and stops SD cards wearing out so quickly.

      • ferret
        link
        fedilink
        English
        2
        edit-2
        6 months ago

        I don’t believe this is true. F2FS is still meant for use on devices with a FTL (flash transition layer) meaning that the device is doing wear leveling itself and a filesystem doing it twice is redundant and counter-productive. The flash-friendly part is referring to other filesystem features (there are many)

        • Chris
          link
          fedilink
          English
          26 months ago

          I bow to your superior knowledge. It definitely doesn’t wear out SD cards as quickly though, but that might be due to other factors not wear levelling.