Kent Overstreet, author of the bcache block caching layer, has announced that bcache has metamorphosed into a fully featured copy-on-write filesystem. “Well, years ago (going back to when I was still at Google), I and the other people working on bcache realized that what we were working on was, almost by accident, a good chunk of the functionality of a full blown filesystem – and there was a really clean and elegant design to be had there if we took it and ran with it. And a fast one – the main goal of bcachefs to match ext4 and xfs on performance and reliability, but with the features of btrfs/zfs.“
Read more at LWN
