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by avianlyric 911 days ago
> You'll see a stable BTRFS and a continued effort to polish XFS/LVM/MDRAID before openZFS ever makes a dent.

Right now I would put my money on bcachefs[1] rather than BTRFS. bcachefs is currently in the process of being merged into the kernel and will be in the next kernel release. Doesn't currently quite offer everything ZFS does, but it's very close and already appears more reliable than BTRFS, and once stuff like Erasure Coding is stable, it'll be more flexible than ZFS.

[1] https://bcachefs.org
1 comments
exitheone 911 days ago
I applaud your optimism but the bcachefs install base is tiny compared to btrfs and still there are corruption and data loss stories on Reddit so maybe give it another 5-10 years of mainstream use to stabilize.

I hope it'll beat btrfs eventually though.

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avianlyric 911 days ago
I’m mostly excited about having access to a filesystem that can happy handle a heterogeneous set of disks with RAID 5/6 style redundancy.

BTRFS RAID-5 implementation has know data loss issues (write hole) that has existed for years now, and doesn’t seem likely to fixed soon.

Then there’s roadmap feature of extending bcachefs native allocation buckets to match up with physical buckets on storage media like SMR drives and also SSDs that expose their underlying NAND arrangement, allowing bcachefs to orchestrate writes in a manner that best fits the target media. Creates the opportunity for bcachefs to get incredibly high performance on SMR drives (compared to FS that don’t understand SMR media), which would probably provide CMR style performance on SMR drives in all but the most random write workloads.

But yeah, there’s still some distance for bcachefs to go. But given its inclusion into mainline, and the fact that mainline only accepts filesystems that have already demonstrated a high level of robustness and completeness (semi-recent policy change driven by experiences with FS like BTRFS which took so long to become complete and stable after merge), gives me hope we won’t need 5-10 years of mainstream use for bcachefs to stabilise.

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