Category: ZFS

OpenZFS 2.1 performance improvements

Posted on | by Martin Matuška | Leave a Comment on OpenZFS 2.1 performance improvements

The version 2.1 of OpenZFS is going to be released soon supporting Linux kernels from 3.10 to 5.13 and FreeBSD 12+. This will be the first long term release (LTS) version of OpenZFS.

Alexander Motin and other OpenZFS developers are currently working on various micro-optimizations in areas like atomics, counters, scalability and memory usage. Most of the optimizations are already part of the upcoming release. Release candidate testers already report improved performance compared to OpenZFS 2.0 and previous releases.

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OpenZFS Feature Flags Compatibility Matrix

Posted on | by Martin Matuška | Leave a Comment on OpenZFS Feature Flags Compatibility Matrix

With the introduction of ZFS feature flags many users have experienced compatibility problems working with ZFS pools on different operating systems or operating system versions. In this article I am providing a table comparing the ZFS Feature Flag support on FreeBSD, Linux (zfsonlinux), Mac OSX (OpenZFS OSX) and illumos (OmniOS). Continue reading →

EuroBSDcon 2013 – OpenZFS

Posted on | by Martin Matuška | Leave a Comment on EuroBSDcon 2013 – OpenZFS

Malta’s sunny weather and beautiful sea attracted many international speakers and guests to EuroBSDcon 2013. The conference was held at the Hilton Conference Centre in St. Julian’s, Malta on September 26-29, 2013. This year my co-speaker was Matt Ahrens, one of the two founders of the ZFS filesystem. Our talk was about the OpenZFS project and covered the current state and future coordination of open source ZFS development in multiple platforms – illumos, FreeBSD and Linux.
PDF with presentation slides Continue reading →

OpenZFS project launched

Posted on | by Martin Matuška | Leave a Comment on OpenZFS project launched

Matthew Ahrens, myself and other open source ZFS contributors from the illumos, FreeBSD, Linux and Mac OS X communities have launched the OpenZFS project today:

OpenZFS launch announcement, September 17th, 2013:

Today we announce OpenZFS: the truly open source successor to the ZFS project.

ZFS is the world’s most advanced filesystem, in active development for over a decade. Recent development has continued in the open, and OpenZFS is the new formal name for this open community of developers, users, and companies improving, using, and building on ZFS. Founded by members of the Linux, FreeBSD, Mac OS X, and illumos communities …

Read the full announcement here

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New features in open source ZFS

Posted on | by Martin Matuška | Leave a Comment on New features in open source ZFS

Since OpenSolaris got discontinued, the development of open source ZFS continues at the illumos project. The main contributors are the companies Delphix, Nexenta and Joyent. In this post I am going to sum up the main user-visible changes in ZFS since the start of illumos.

This is an updated version of the article originally posted on July 9, 2012. Continue reading →

Posted in ZFS

EuroBSDcon 2012 – Tuning ZFS on FreeBSD

Posted on | by Martin Matuška | Leave a Comment on EuroBSDcon 2012 – Tuning ZFS on FreeBSD

This year’s EuroBSDcon took place at the Warsaw University of Technology on October 20-21. The conference was well organized with great keynote talks by Eric Allman and Kirk McKusick. My talk was titled “Tuning ZFS on FreeBSD” and based on my identically named article in the August issue of the BSD Magazine. I presented several do’s and don’ts and other findings and recommendations from my experience with the ZFS file system.
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Native ZFS for Linux: development continues at LLNL

Posted on | by Martin Matuška | Leave a Comment on Native ZFS for Linux: development continues at LLNL

In my past article “Tutorial: native ZFS on Ubuntu and Fedora Linux” I have given a tutorial how to install ZFS on Linux from the KQ Infotech github repository. This tutorial can be considered obsolete as the company KQ Infotech has been acquired by STEC, Inc (company with focus on SSD). Their ZFS on Linux project was assumably closed, as there is no more serious activity at their github repository. Continue reading →

ZFS v28 for FreeBSD 8.2

Posted on | by Martin Matuška | Leave a Comment on ZFS v28 for FreeBSD 8.2

The version 28 of the ZFS filesystem has been merged to FreeBSD 8-STABLE as of revision 222741 (June 6th, 2011).
There are many FreeBSD users of 8.2-RELEASE (RELENG_8_2) which may want to take advantage of the new ZFS version (v28) before 8.3-RELEASE.
For these users I am providing a patch against the RELENG_8_2 source tree, updated kernel module and binaries and mfsBSD ISO images for testing and rescue.
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