Bcachefs
Bcachefs is a copy-on-write (COW) file system for Linux-based operating systems. Its primary developer, Kent Overstreet, first announced it in 2015, and it was added to the Linux kernel beginning with 6.7. It is intended to compete with the modern features of ZFS or Btrfs, and the speed and performance of ext4 or XFS. It self-describes as "stable", as of December 2022.
| Developer(s) | Kent Overstreet |
|---|---|
| Introduced | 21 August 2015 |
| Structures | |
| Directory contents | Hybrid B+ tree |
| File allocation | Extents |
| Bad blocks | None recorded |
| Features | |
| Dates recorded | modification (mtime), attribute modification (ctime), access (atime), create (crtime) |
| Attributes | Extended attributes |
| File system permissions | POSIX (+ ACL in xattrs) |
| Transparent compression | Yes |
| Transparent encryption | Yes |
| Copy-on-write | Yes |
| Other | |
| Supported operating systems | Linux |
| Website | bcachefs |
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