Lmst

What #Linux filesystems are people using? I've been on #ext3 and #ext4 for a long time and now looking at #btrfs due to the built-in snapshotting, so wanted to see if anyone here is using that. In the #BSD world, I prefer #ZFS but don't want to use that on Linux. Please share your experiences.

@lispi314 good question.

Maybe because #dmraid as Software-#RAID was tasked with checking itself and the underlying filesystems like #ext3 were taked to check integrity on their level as well?

After all physical device <=> physical volume partution <=> logical volume groups (w/ RAID) <=> filesystems were used in classic #Linux-RAID transparently to each other.

This also allows for weird shit like =RAID10 with an odd number of drives](https://en.wikipedia.org/wiki/RAID#Non-standard_levels) (just having data duplicated on different drives and striped in one go.

But yeah, you are correct in that an integrity checkibg module was overdue...

#e2fsprogs 1.47.1 has been released (#e2fs / #ext2 / #ext3 / #ext4 / #FileSystem) http://e2fsprogs.sourceforge.net/

The last days I have been working on a project for the visualization of file systems. Now it's complete!

https://davidak.de/blog/what-does-a-filesystem-really-look-like/

#Dateisystem #Windows #Linux #FAT32 #NTFS #ext2 #ext3 #ext4 #XFS #ZFS #Btrfs #Bcachefs #ISO9660

Die letzten Tage habe ich an einem Projekt zur Visualisierung von Dateisystemen gearbeitet. Jetzt ist es fertig!

https://davidak.de/blog/wie-sieht-ein-dateisystem-tatsaechlich-aus/

#Dateisystem #Windows #Linux #FAT32 #NTFS #ext2 #ext3 #ext4 #XFS #ZFS #Btrfs #Bcachefs #ISO9660

@saiki Sollte #btrfs mal nicht der neue Star am Linuxhimmel werden? Besser als #ext3 / #ext4 ? Das schaut mir nicht so aus.

Keine Ahnung, hab das irgendwie aus den Augen verloren, als ich dank Arbeit vorrübergehend immer weniger direkt mit Linux zu tun hatte.

@jonathankoren @neurovagrant Yeah, and AFAICT they mostly support #btrfs, #ext2 / #ext3 / #ext4, #FAT32 and maybe #ExFAT in some cases where the vendor paid $$ per device to #Microsoft.

Mainline #Linux ≠ #Android #toybox / #linux!
As I've gutted most out of the kernel for #OS1337 myself...

@golem Oh Mann, ich erinnere mich dunkel an meine ersten Schritte mit #Linux. Damals war #ReiserFS irgendwie cool. Ich weiß nicht mehr genau, warum, aber ich habe es damals bewusst gegenüber #ext3 vorgezogen. Jetzt ist ReiserFS deprecated und steht vor seiner Entfernung aus dem Kernel.

@koakuma That being said, it sounds like you're not on some #CoW #filesystem (since the filesystem is under suspicion, rather than only ill-designed #git).

If you're on #ext3 / #ext4, add data=journal, metadata_csum and journal_checksum (the last two are ext4-only) to your mount options, it's quite important to have some bare minimum of usability (still won't help with partial writes, you need transactionality for that).

What tool to use to defrag #ext3 #partition images (e.g. #Apptainer #Singularity overlays)?

- e2defrag (https://launchpad.net/e2defrag): ultra old, doesn't compile (undefined reference to `HOLE_BLKADDR')
- shake (https://github.com/unbrice/shake): in userpace, not for image files (?)
- defrag (https://aur.archlinux.org/packages/defrag): weird script, apparently equally inappropriate
- e4defrag (https://e2fsprogs.sourceforge.net/) doesn't work for ext3 partitions