| guide | The previous OpenZFS 2.2 release candidate has worked towards compatibility with the Linux 6.4 kernel, and in 2.2-rc3 the meta tracker for Linux 6.4 support has been marked as complete. |
OpenZFS 2.2 released the 3rd RC version.
The previous OpenZFS 2.2 release candidate has worked towards compatibility with the Linux 6.4 kernel, and in 2.2-rc3 the meta tracker for Linux 6.4 support has been marked as complete. Therefore, OpenZFS 2.2 will support running on Linux 3.10 to Linux 6.4 stable kernels or FreeBSD 12.2 and later.
OpenZFS 2.2-rc3 also brings several other bug fixes, enabling the file system side clone ioctl and copy/clone functionality.
More broadly, for OpenZFS 2.2, this feature release brings fully adaptive ARC eviction, block cloning, clean error logs, Linux container support, BLAKE3 checksums, and corrective ZFS sink support.
Linux container support for OpenZFS 2.2 includes IDMAPPED mounts in user namespaces, OverlayFS support, and Linux namespace delegation support.
The performance results using BLAKE3 hashing are excellent compared to the algorithm, especially since BLAKE3 supports AVX2 and AVX-512 optimized modes.
OpenZFS's block cloning support allows a file or a subset of its blocks to be cloned into another file or into the same file by creating additional references to the data blocks without copying the data itself. Block cloning is also described as "fast manual deduplication".