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108562344c
Before this change in case of any allocation error ZFS always fallen back to normal class. But with more of different classes available we migth want more sophisticated logic. For example, it makes sense to fall back from dedup first to special class (if it is allowed to put DDT there) and only then to normal, since in a pool with dedup and special classes populated normal class likely has performance characteristics unsuitable for dedup. This change implements general mechanism where fallback order is controlled by the same spa_preferred_class() as the initial class selection. And as first application it implements the mentioned dedup->special->normal fallbacks. I have more plans for it later. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Paul Dagnelie <pcd@delphix.com> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #17391 |
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OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.
Official Resources
- Documentation - for using and developing this repo
- ZoL Site - Linux release info & links
- Mailing lists
- OpenZFS site - for conference videos and info on other platforms (illumos, OSX, Windows, etc)
Installation
Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.
Contribute & Develop
We have a separate document with contribution guidelines.
We have a Code of Conduct.
Release
OpenZFS is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197
Supported Kernels
- The
METAfile contains the officially recognized supported Linux kernel versions. - Supported FreeBSD versions are any supported branches and releases starting from 13.0-RELEASE.