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What file systems are you using on your devices and why?

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
mindbleach ,

NTFS for the drive I had before jumping to Mint. Currently reporting several hundred gigabytes free, but refusing to make any new files, because… I don’t know. I’ll deal with it after an upcoming move.

The OS / home SSD is ext4, and so is the fat loud hard disk I recently purchased through an entire month of fighting Amazon over gift cards.

n2burns ,

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.

mayidar ,

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.

cyborganism ,

I’m curious now about BTRFS.

How do you roll back in case of problems?

mayidar ,

discovery.endeavouros.com/…/02/

Basically, I just followed this tutorial for my EndeavourOS installations. It’s as easy as choosing an older entry in GRUB. Fedora offers something similar by default, and I think Tumbleweed does too.

Moreover I’m now playing with Arkane Linux (arkanelinux.org), immutable flavour of Arch, it features another magic with btrfs and rollbacks without snapshots and GRUB

Zikeji ,
@Zikeji@programming.dev avatar

Bookmarking Arkane. I’m a huge fan of Fedora Atomic but miss AUR.

cyborganism ,

Oh ok cool! I’m going to check it out.

I’m taking a lot of notes for my next install. Trying to build something solid with Kubuntu.

Kualk ,

Take snapshot. If problem occurs, manually change boot label to use snapshot label.

savvywolf ,
@savvywolf@pawb.social avatar

I’ve been basically using btrfs on a lot of my disks because of the features it has.

Before I switched to a borg based system, my backups partition used btrfs for compression.

My main OS disk is btrfs so I can use timeshift snapshots, which are really worth checking out if you tinker with your system a lot.

I have two more btrfs partitions software raid0’d together for my steam library, nix store and other big but loosable things.

And my main home folder uses btrfs because I think the checksumming thing it does is more reliable for error detection, and cow is more fault tollerant on power failure?

… And I now fell like I’m one of those people with an over engineered storage solution. I just never get rid of old ssds or hard disks!

seaQueue , (edited )
@seaQueue@lemmy.world avatar

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.

soundconjurer ,
@soundconjurer@mstdn.social avatar

@Psyhackological
Work stations all run Ext4.
Main server: Ext4 on main partition, ZFS RAIDZ2 on the data.
Secondary server: BTRFS on main, BTRFS RAID1 on data.

If BTRFS could natively encrypt and had stable RAID6, I'd be using it probably on everything.

rjek ,

ext4 because I value my data and don’t want to lose it. I used to mess about with ZFS for mass storage but it’s a university course to learn how to use and have decent performance.

I used to use XFS, but ext4 caught up.

And I used to use XFS… on something other than Linux.

gerdesj ,

xfs has reflinks. That means you can copy huge wodges of data nearly for free on one filesystem. For backup systems this is a killer feature. Veeam rolling up incremental backups into the last full happens in seconds because pointers to blocks are juggled around rather than the data blocks themselves.

xfs has been around for a very, very long time. I use it for larger filesystems eg Nextcloud, Zoneminder and the like (and Veeam backup repos that are not object storage). I use ext4 by default.

pfSense boxes - zfs because the alternative is ufs.

RPi - OverlayFS (with ext4 and tmpfs) gets you a generally read only filesystem with changes held in RAM. Ideal for kiosks, appliances and keeping memory sticks alive.

Windows - NTFS, it works well and has streams and there aren’t many other options (ReFS is a bit new but it does have reflinks)

fossphi ,

Btrfs, for the compression and CoW. I’ve been using it since a couple years. It seems stable for my use. I need to fully wrap my head around how snapshots work, though.

henfredemars ,

You mentioned CoW. I’m really taking advantage of this because I have multiple Wine prefixes that have lots of duplicate data. I want to give every application it’s own prefix, and my underlying file system allows me to duplicate the blocks so the prefixes are basically free where before it’s several hundred megabytes just to make a new prefix.

thingsiplay ,

Ext4 for everything when possible, because its reliable and proven. I’m looking towards Btrfs for my next system drive, as it is mature now and has good features. But I would use Ext4 for everything else still. For interoperability that doesn’t understand Ext4 it would be NTFS when supported, otherwise fallback to FAT32.

That’s the entirety of my knowledge and what I use when I have to format it myself. :D

henfredemars ,

I respect your reliable and proven comment. I really love the features of BTRFS and that’s why I use it, but I also really care about my data. I have secondary installations that use EXT4 and work very well.

shotgun_crab ,

Btrfs for the compression and snapshots

skullgiver ,
@skullgiver@popplesburger.hilciferous.nl avatar

BTRFS on Linux (including the SD card in my Steam Deck, dunno what the root storage on that uses). NTFS on Windows (BTRFS driver for Windows isn’t quite as stable as I’d like it to be). ZFS on a NAS because that’s how it came set up and so far the zRAID hasn’t failed me yet. FAT32 for UEFI boot partitions and recovery USB drives.

XFS at work because apparently ext4 isn’t “mature enough”. Not by choice.

No idea what Android uses, probably ext4 with some software on top?

rem26_art ,
@rem26_art@fedia.io avatar

I've got Btrfs on my desktop for the OS drive cuz that was what Fedora recommended when I was installing it. It took a bit of effort to get snapshots working properly, but other than that, I've had no issues with it at all over the past year. I've got an exFAT drive and an NTFS drive in there that are kind of leftovers from using Windows. I've been thinking about reformatting the exFAT drive to ext4 or something, since all it really does is store games, and having the ability to symlink to it would be nice.

I've got a TrueNAS machine as well and that uses ZFS for pretty much everything.

kbal ,
@kbal@fedia.io avatar

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.

thingsiplay ,

same

CalcProgrammer1 ,
@CalcProgrammer1@lemmy.ml avatar

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

Shimitar ,

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.

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