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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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What's with all these hip filesystems and how are they different? (lm.paradisus.day)

submitted 11 months ago* (last edited 11 months ago) by rutrum@lm.paradisus.day to c/linux@lemmy.ml

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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.

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[–] callyral@pawb.social 16 points 11 months ago (7 children)

related question, although i don't think it's big enough for a post of its own.

if i use btrfs subvolumes, does it mean that i can have one EFI partition and one root partition, and then subdivide the root partition using subvolumes? how would that work during the installation process? or is it done after installation?

[–] lupec@lemm.ee 4 points 11 months ago

Pretty much, yeah. At some point I remember the recommendation being having a separate /boot as well due to incompatibilities with GRUB's save default option iirc, not sure that's a thing anymore.

Anyway, you usually set that up during the install process, although I'm not sure graphical installers let you handcraft btrfs subvolume mount points or even select them as such these days. Last I checked at least they either just used a default layout (@ and @home with Ubuntu, for instance) or treated it as a single volume with no further options.

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