this post was submitted on 23 Nov 2024
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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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[–] poVoq@slrpnk.net 1 points 3 weeks ago (1 children)

I am using btrfs on raid1 for a few years now and no major issue.

It's a bit annoying that a system with a degraded raid doesn't boot up without manual intervention though.

Also, not sure why but I recently broke a system installation on btrfs by taking out the drive and accessing it (and writing to it) from another PC via an USB adapter. But I guess that is not a common scenario.

[–] blackstrat@lemmy.fwgx.uk 1 points 3 weeks ago

The whole point of RAID redundancy is uptime. The fact that btrfs doesn't boot with a degraded disk is utterly ridiculous and speaks volumes of the developers.

[–] interdimensionalmeme@lemmy.ml 1 points 3 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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[–] horse_battery_staple@lemmy.world 1 points 3 weeks ago (2 children)

Do you rely on snapshotting and journaling? If so backup your snapshots.

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[–] Lem453@lemmy.ca 1 points 3 weeks ago (2 children)

Btrfs only has issues with raid 5. Works well for raid 1 and 0. No reason to change if it works for you

[–] blackstrat@lemmy.fwgx.uk 1 points 3 weeks ago

I think it has more issues than just with raid 5 &6!

[–] possiblylinux127@lemmy.zip 1 points 3 weeks ago

It is stable with raid 0,1 and 10.

Raid 5 and 6 are dangerous

[–] tfowinder@lemmy.ml 1 points 3 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.

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