Linux is about to lose a feature [Bcachefs (ofc)]– over a personality clash
comment: A large and unfortunate mistake in the kernel development management process is underway
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Sorta related but these "next gen" FSs are pretty overrated on the performance benchmarks lots of groups like Phoronix do every kernel release.
BTRFS lags behind a ton compared to XFS, even though XFS was originally designed for large file throughput on servers.
Even EXT4 beats BcacheFS and BTRFS on several irl load benchmarks.
Only thing I've seen actually keep up is F2FS which iirc is the default on Android these days.
The point of these next gen file systems aren't raw performance, they are reliability, performance for specific cases, and reduced data usage. For example:
These are things that tend to reduce performance, not increase it. Which is why, when performance on these filesystems stays the same or even increases, that's a major accomplishment.
The point of COW filesystems isn't performance. Comparing XFS and EXT4 to BTRFS/ZFS/Bcache is pointless.