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btrfs appreciation post
(lemm.ee)
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this post was submitted on 14 Aug 2023
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I'm glad it' working well for you, but I don't think it' true to say that btrfs gets beyond its fair share of flak. It gets the exactly correct amount of flak for what it is. Every place I have worked at that wanted to deploy a COW fs on like, a NAS or server, has always gone with zfs. btrfs is such a mess it never even enters the conversation. Even if it can have its bugs ironed out, the bcache dev was right in pointing out that its on disk formats are poorly designed for their job, and cannot be revised except in a new version of the entire fs. I hope bcachefs gets merged into the kernel next year, that's a filesystem I would actually trust with my data.
Btrfs does get a lot of flak based on hearsay or experiences that are out of date. It works well in a lot of scenarios and is used a lot now, ZFS is also a good fs for many use cases, especially in enterprise situations.
I can't comment on the on-disk formats as I have no experience there but Btrfs works well in a lot of use cases for for a lot of users.
Bcachefs sounds promising but it does have a long way to go and will need a lot of testing. It's getting into the kernel to get more testing mileage on it and encourage more developers, it only have one guy working on it (except for the casefolding submission) which is a big problem for both present and future. Hopefully it'll get more devs interested.
Never trust any filesystem, or the storage media. Consider anything that holds your data to be fallible.