"The development of bcachefs has been officially jettisoned from that of the Linux kernel itself. At present, the work-in-progress kernel 6.17 still contains bcachefs code, but unmodified from the 6.16 release. In response, the project has published its first set of packages of a version that can be dynamically loaded as a DKMS module, as promised a couple of weeks ago in an email from project lead Kent Overstreet."
"Linux benchmarking site Phoronix recently ran a set of performance tests comparing all the built-in file systems in 6.17, and bcachefs did not fare well. We counted 16 tests across five pages of graphs, and bcachefs was the slowest or next-to-last in all of them. Phoronix repeated the tests with the new DKMS version, and it does comparatively better. In multiple tests, the new version is about twice as fast, and ranks in the middle of the pack."
bcachefs has been removed from active Linux kernel development and is now externally maintained with a DKMS-loadable package set. The DKMS packages are distributed via an APT repository, restricting availability to Ubuntu and Debian-based distributions. The new DKMS version represents code that would have been included in kernel 6.17 but was excluded; that creates two coexisting versions when testing the 6.17 release candidate. Phoronix benchmarks showed the built-in bcachefs performing poorly, while the DKMS version performed considerably better, often about twice as fast and ranking mid-pack. openSUSE has moderated its position after upstream discussions.
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