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Linux provides SLAB_RECLAIM_ACCOUNT and __GFP_RECLAIMABLE flags to mark memory allocations that can be freed via shinker calls. It should allow kernel to tune and group such allocations for lower memory fragmentation and better reclamation under pressure. This patch marks as reclaimable most of ARC memory, directly evictable via ZFS shrinker, plus also dnode/znode/sa memory, indirectly evictable via kernel's superblock shrinker. Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Allan Jude <allan@klarasystems.com> |
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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 12.4-RELEASE.