666aa69f32
The current l2_misses accounting behavior treats all reads to pools without a configured l2arc as an l2arc miss, IFF there is at least one other pool on the system which does have an l2arc configured. This makes it extremely hard to tune for an improved l2arc hit/miss ratio because this ratio will be modulated by reads from pools which do not (and should not) have l2arc devices; its upper limit will depend on the ratio of reads from l2arc'd pools and non-l2arc'd pools. This PR prevents ARC reads affecting l2arc stats (n.b. l2_misses is the only relevant one) where the target spa doesn't have an l2arc. Includes new test - l2arc_l2miss_pos.ksh Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: George Amanakis <gamanakis@gmail.com> Signed-off-by: Adam Moss <c@yotes.com> Closes #10921 |
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README.md
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 12-STABLE and 13-CURRENT.