this post was submitted on 08 Aug 2024
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Linux

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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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I want to learn more about file systems from the practical point of view so I know what to expect, how to approach them and what experience positive or negative you had / have.

I found this wikipedia's comparison but I want your hands-on views.

For now my mental list is

  • NTFS - for some reason TVs on USB love these and also Windows + Linux can read and write this
  • Ext4 - solid fs with journaling but Linux specific
  • Btrfs - some modern fs with snapshot capability, Linux specific
  • xfs - servers really like these as they are performant, Linux specific
  • FAT32 - limited but recognizable everywhere
  • exFAT - like FAT32 but less recognizable and less limited
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[–] [email protected] 6 points 3 months ago

I use ext4 for all boot drives and root filesystems. Anything really important goes on a ZFS array. And for my Linux isos, I use a drive with ext4 + snapraid. The parity drive has xfs because ext4 has a 16tb file size limit.

Got rid of anything NTFS as it was unreliable and slow on Linux.

[–] [email protected] 6 points 3 months ago

Ext4 on every Linux device.

Ah i dont have any other kind of devices (android on mobile, but there I have no choices on fs)

Why not btrfs? Don't know, been using what has kept working flawlessly for me for the last 20+ years, no need to replace ext4.

[–] [email protected] 5 points 3 months ago (1 children)

A combination of XFS and ZFS. I work in high performance computing (academic). While I love the reliability of ZFS for data archival and peace of mind that results provably haven’t suffered bitrot, sometimes I just need a 10 TB temp file(s) with fast mostly-sequential R/W. Appropriate selection of file systems lets me have both.

[–] [email protected] 4 points 3 months ago

As an aside, I’ve been watching bcachefs with some interest, as it seems to be getting faster with every kernel release, building on the data integrity guarantees of ZFS while pushing performance boundaries and being GPL compatible (i.e. in tree). Kent Overstreet et al. have done a fantastic job with this FS.

[–] [email protected] 5 points 3 months ago

XFS on my server VMs and my laptops and desktops.

ZFS on my file server. I'd use it on my laptops and desktops too (and have done when I was using Xubuntu) but I've switched toFedora which doesn't come with a way to easily install with ZFS and I don't feel like jumping through hoops to get it done. And I can't stand btrfs. I don't know what it is about it, but I just don't like it.

[–] [email protected] 5 points 3 months ago

Ext4 bc of its speed for games and my main files. Btrfs on the root for compression

[–] [email protected] 4 points 3 months ago* (last edited 3 months ago)

Btrfs, ZFS and ext4. My servers use ZFS, my client machines mostly use btrfs and I have a sprinkling of ext4 partitions for specific workloads. I'm all in on CoW filesystems for snapshots, send receive, transparent compression and reflinks. I like btrfs on client machines and SBCs because it's easily available (baked into the kernel) and doesn't require maintaining dkms or holding kernel versions until ZFS supports them and because snapshot handling and other filesystem admin tasks are simple and straightforward. I run ZFS wherever data integrity is important, eg: storage servers and backup targets, but largely prefer working with btrfs.

[–] [email protected] 4 points 3 months ago

It's all Ext4, but I run SnapRAID on top of that on my data drives. I'm sure lots of people would tell me I should use ZFS/BTRFS instead, but I'm used to SnapRAID, and I like the idea if something goes wrong, I won't lose all my data.

[–] [email protected] 4 points 3 months ago* (last edited 3 months ago) (2 children)

Btrfs main boot drive

Xfs main storage drive

exFAT external "archive" drive (easy to connect to Windows machines if ever I need my backup in someone else's windows machine in an emergency and such)

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[–] [email protected] 4 points 3 months ago* (last edited 3 months ago) (2 children)

Defaults

So Btrfs, ZFS and ext4 (ext4 is virtual only)

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[–] [email protected] 4 points 3 months ago* (last edited 3 months ago) (6 children)

I use bcachefs for my games, I like that it lets me have multiple disks with redundant data copies, plus ssd caching of frequently accessed files, this fs is linux specific for now as far as I know, and is still experimental. I use ext4 for everything else, and FAT32 for flash drives.

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[–] Mwa 3 points 3 months ago* (last edited 3 months ago)

NTFS Usally for windows,ext4 for linux,btrfs to install linux on,vfat/fat32 for cross platform compatibility

[–] [email protected] 3 points 3 months ago

Btrfs for the compression and snapshots

[–] [email protected] 3 points 3 months ago

Pretty much all ext4 except for a few Windows installs on NTFS.

[–] [email protected] 3 points 3 months ago

Depends. Slower desktop machines XFS.
Standard desktop XFS, if it has a smaller SSD, Btrfs.
Home server ext4/XFS + ZFS. Generic servers at work ext4/XFS, backup/storage servers ZFS.
Database server, experiment with ZFS with compression enabled - ratio 2:1, but encountered problems (probably a bad HBA model), standard ext4/XFS.
Hosts with virtualization, small server - XFS, big server - ZFS (technically a ZVOL).

[–] [email protected] 3 points 3 months ago (2 children)

We use btrfs for the / partition and xfs for any data partitions. Has served us well, the snapshot feature saves us some valuable time when an update goes awry.

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[–] [email protected] 3 points 3 months ago (4 children)

F2FS, because solid state and speed

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[–] [email protected] 3 points 3 months ago* (last edited 3 months ago) (1 children)

ext4, but the btrfs activity visible in the kernel changelog has slowed down recently after a long period of many bug fixes, so maybe I'll give it a try next time.

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[–] [email protected] 3 points 3 months ago (2 children)

Whatever my installation CD had as default 😂. I'm guessing ext4?

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[–] [email protected] 3 points 3 months ago (5 children)

I use Btrfs for my root partition to be able to rollback if something goes wrong after update. XFS: in all other cases, since I hate the lost+found directory on ext4. Although I don't think there's any significant difference between ext4 and xfs in performance and reliability.

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