Bcachefs may be headed out of the kernel

The older I get the more I feel like anything other than the ExtantFS family is just silly.

The filesystem should do files, if you want something more complex do it in userspace. We even have FUSE if you want to use the Filesystem API with your crazy network database thing.

> The older I get the more I feel like anything other than the ExtantFS family is just silly.

The extended (not extant) family (including ext4) don't support copy-on-write. Using them as your primary FS after 2020 (or even 2010) is like using a non-journaling file system after 2010 (or even 2001)--it's a non-negotiable feature at this point. Btrfs has been stable for a decade, and if you don't like or trust it, there's always ZFS, which has been stable 20 years now. Apple now has AppFS, with CoW, on all their devices, while MSFT still treats ReFS as unstable, and Windows servers still rely heavily on NTFS.

Hell, there's XFS if you love stability but want CoW.

XFS doesn't support whole-volume snapshots, which is the main reason I want CoW filesystems. And it also stands out as being basically the only filesystem that you can't arbitrarily shrink without needing to wipe and reformat.