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Document the project's policy regarding publishing and maintaining official OpenZFS releases. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Matthew Ahrens <mahrens@delphix.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #11821
38 lines
2.2 KiB
Markdown
38 lines
2.2 KiB
Markdown
OpenZFS uses the MAJOR.MINOR.PATCH versioning scheme described here:
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* MAJOR - Incremented at the discretion of the OpenZFS developers to indicate
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a particularly noteworthy feature or change. An increase in MAJOR number
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does not indicate any incompatible on-disk format change. The ability
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to import a ZFS pool is controlled by the feature flags enabled on the
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pool and the feature flags supported by the installed OpenZFS version.
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Increasing the MAJOR version is expected to be an infrequent occurrence.
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* MINOR - Incremented to indicate new functionality such as a new feature
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flag, pool/dataset property, zfs/zpool sub-command, new user/kernel
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interface, etc. MINOR releases may introduce incompatible changes to the
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user space library APIs (libzfs.so). Existing user/kernel interfaces are
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considered to be stable to maximize compatibility between OpenZFS releases.
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Additions to the user/kernel interface are backwards compatible.
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* PATCH - Incremented when applying documentation updates, important bug
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fixes, minor performance improvements, and kernel compatibility patches.
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The user space library APIs and user/kernel interface are considered to
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be stable. PATCH releases for a MAJOR.MINOR are published as needed.
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Two release branches are maintained for OpenZFS, they are:
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* OpenZFS LTS - A designated MAJOR.MINOR release with periodic PATCH
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releases that incorporate important changes backported from newer OpenZFS
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releases. This branch is intended for use in environments using an
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LTS, enterprise, or similarly managed kernel (RHEL, Ubuntu LTS, Debian).
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Minor changes to support these distribution kernels will be applied as
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needed. New kernel versions released after the OpenZFS LTS release are
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not supported. LTS releases will receive patches for at least 2 years.
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The current LTS release is OpenZFS 2.1.
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* OpenZFS current - Tracks the newest MAJOR.MINOR release. This branch
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includes support for the latest OpenZFS features and recently releases
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kernels. When a new MINOR release is tagged the previous MINOR release
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will no longer be maintained (unless it is an LTS release). New MINOR
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releases are planned to occur roughly annually.
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