this post was submitted on 24 Aug 2024
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For me the reason was that I wanted encryption, raid1 and compression with a mainlined filesystem to my workstation. Btrfs doesn't have encryption, so you need to do it with luks to an mdadm raid, and build btrfs on top of that. Luks on mdadm raid is known to be slow, and in general not a great idea.
ZFS has raid levels, encryption and compression, but doesn't have fsck. So you better have an UPS for your workstation for electric outages. If you do not unmount a ZFS volume cleanly, there's a risk of data loss. ZFS also has a weird license, so you will never get it with mainline Linux kernel. And if you install the module separately, you're not able to update to the latest kernel before ZFS supports it.
Bcachefs has all of this. And it's supposed to be faster than ZFS and btrfs. In a few years it can really be the golden Linux filesystem recommended for everybody. I sure hope Kent gets some more help and stops picking fights with Linus before that.
Encryption and compression don't play well together though. You should consider that when storing sensitive files. That's why it's recommended to leave compression off in https because it weakens the encryption strength
It is only in TLS where you have to disable compression, not in HTTP.
https://security.stackexchange.com/questions/19911/crime-how-to-beat-the-beast-successor/19914#19914
Could you explain how a CRIME attack can be done to a disk?
I can't explain, perhaps due to my limited knowledge about the subject. I understood that compression was a weakening factor for encryption years ago when I heard about it. Always good to do your own research in the end 🙃