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Tell me why I shouldn't use btrfs (lemmy.zip)

submitted 4 weeks ago by possiblylinux127@lemmy.zip to c/selfhosted@lemmy.world

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About a year ago I switched to ZFS for Proxmox so that I wouldn't be running technology preview.

Btrfs gave me no issues for years and I even replaced a dying disk with no issues. I use raid 1 for my Proxmox machines. Anyway I moved to ZFS and it has been a less that ideal experience. The separate kernel modules mean that I can't downgrade the kernel plus the performance on my hardware is abysmal. I get only like 50-100mb/s vs the several hundred I would get with btrfs.

Any reason I shouldn't go back to btrfs? There seems to be a community fear of btrfs eating data or having unexplainable errors. That is sad to hear as btrfs has had lots of time to mature in the last 8 years. I would never have considered it 5-6 years ago but now it seems like a solid choice.

Anyone else pondering or using btrfs? It seems like a solid choice.

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[–] interdimensionalmeme@lemmy.ml 1 points 4 weeks ago (2 children)

For my jbod array, I use ext4 on gpt partitions. Fast efficient mature.

For anything else I use ext4 on lvm thinpools.

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[–] tfowinder@lemmy.ml 1 points 4 weeks ago

Used it in development environment, well I didn't need the snapshot feature and it didn't have a straightforward swap setup, it lead to performance issues because of frequent writes to swap.

Not a big issue but annoyed me a bit.

[–] ikidd@lemmy.world 0 points 4 weeks ago

btrfs raid subsystem hasn't been fixed and is still buggy, and does weird shit on scrubs. But fill your boots, it's your data.

[–] bruhduh@lemmy.world 0 points 4 weeks ago (1 children)

Raid 5/6, only bcachefs will solve it

[–] possiblylinux127@lemmy.zip 0 points 4 weeks ago (5 children)

Btrfs Raid 5 and raid 6 are unstable and dangerous

Bcachefs is cool but it is way to new and isn't even part of the kernel as of yet.

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