116038816SMartin MatuskaOpenZFS uses the MAJOR.MINOR.PATCH versioning scheme described here: 216038816SMartin Matuska 316038816SMartin Matuska * MAJOR - Incremented at the discretion of the OpenZFS developers to indicate 416038816SMartin Matuska a particularly noteworthy feature or change. An increase in MAJOR number 516038816SMartin Matuska does not indicate any incompatible on-disk format change. The ability 616038816SMartin Matuska to import a ZFS pool is controlled by the feature flags enabled on the 716038816SMartin Matuska pool and the feature flags supported by the installed OpenZFS version. 816038816SMartin Matuska Increasing the MAJOR version is expected to be an infrequent occurrence. 916038816SMartin Matuska 1016038816SMartin Matuska * MINOR - Incremented to indicate new functionality such as a new feature 1116038816SMartin Matuska flag, pool/dataset property, zfs/zpool sub-command, new user/kernel 1216038816SMartin Matuska interface, etc. MINOR releases may introduce incompatible changes to the 1316038816SMartin Matuska user space library APIs (libzfs.so). Existing user/kernel interfaces are 1416038816SMartin Matuska considered to be stable to maximize compatibility between OpenZFS releases. 1516038816SMartin Matuska Additions to the user/kernel interface are backwards compatible. 1616038816SMartin Matuska 1716038816SMartin Matuska * PATCH - Incremented when applying documentation updates, important bug 1816038816SMartin Matuska fixes, minor performance improvements, and kernel compatibility patches. 1916038816SMartin Matuska The user space library APIs and user/kernel interface are considered to 2016038816SMartin Matuska be stable. PATCH releases for a MAJOR.MINOR are published as needed. 2116038816SMartin Matuska 2216038816SMartin MatuskaTwo release branches are maintained for OpenZFS, they are: 2316038816SMartin Matuska 2416038816SMartin Matuska * OpenZFS LTS - A designated MAJOR.MINOR release with periodic PATCH 2516038816SMartin Matuska releases that incorporate important changes backported from newer OpenZFS 2616038816SMartin Matuska releases. This branch is intended for use in environments using an 2716038816SMartin Matuska LTS, enterprise, or similarly managed kernel (RHEL, Ubuntu LTS, Debian). 2816038816SMartin Matuska Minor changes to support these distribution kernels will be applied as 2916038816SMartin Matuska needed. New kernel versions released after the OpenZFS LTS release are 3016038816SMartin Matuska not supported. LTS releases will receive patches for at least 2 years. 31*c6767dc1SMartin Matuska The current LTS release is OpenZFS 2.2. 3216038816SMartin Matuska 3316038816SMartin Matuska * OpenZFS current - Tracks the newest MAJOR.MINOR release. This branch 3416038816SMartin Matuska includes support for the latest OpenZFS features and recently releases 3516038816SMartin Matuska kernels. When a new MINOR release is tagged the previous MINOR release 3616038816SMartin Matuska will no longer be maintained (unless it is an LTS release). New MINOR 3716038816SMartin Matuska releases are planned to occur roughly annually. 38