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25ea8ce94b
Track history in context of bursts, not individual log blocks. It allows to not blow away all the history by single large burst of many block, and same time allows optimizations covering multiple blocks in a burst and even predicted following burst. For each burst account its optimal block size and minimal first block size. Use that statistics from the last 8 bursts to predict first block size of the next burst. Remove predefined set of block sizes. Allocate any size we see fit, multiple of 4KB, as required by ZIL now. With compression enabled by default, ZFS already writes pretty random block sizes, so this should not surprise space allocator any more. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #15635 |
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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.