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Monday, 13. December 2010

ZFS introductory talk at the Slovak University of Technology in Bratislava

FreeBSD ZFS
Another of my ZFS talks was an introductory talk at the Slovak University of Technology in Bratislava on December 8, 2010. The talk was held in the slovak language with the translated title "ZFS from the viewpoint of a system administrator". Many thanks to the organizer - The HOW-KNOW Project [1] (joint project of the student organization YNET [2] and IAESTE Slovakia [3]).

Presentation slides (in slovak language)

Link to a video recording will follow. Continue reading "ZFS introductory talk at the Slovak University..." »
Posted by
Martin Matuška
in FreeBSD, ZFS at 09:00
Select language: German, Slovak, English

Tuesday, 23. November 2010

Talk at BSDDay 2010 in Budapest, Hungary

FreeBSD
Last Saturday (20.11.2010) I attended the BSD Day 2010 at the Faculty of Informatics, Eötvös Loránd University in Budapest, Hungary. The event was sponsored by the Hungarian BSD Association and excellently organized by the hungarian FreeBSD developer Gábor Páli.

There have been several good talks including the talks of my friends Daniel Geržo (How the FreeBSD Project Works) and Roman Divácky (Clang/LLVM in the Base System).

My talk was "ZFS and FreeBSD".
Presentation slides
Video recording from the presentation Continue reading "Talk at BSDDay 2010 in Budapest, Hungary" »
Posted by
Martin Matuška
in FreeBSD at 21:55
Select language: German, Slovak, English

Wednesday, 20. October 2010

Viewing ZFS statistics with zfs-stats

FreeBSD ZFS
The FreeBSD operating system collects statistical data from the ZFS subsystem using mechanisms originating from the OpenSolaris kstat framework.
This data is stored in sysctl variables (sysctl kstat.zfs). I have been recently working on improving a script named arc_summary.pl that was originally written by Ben Rockwood and modified by Jason J. Hellenthal. I have rewritten large parts of this script and renamed it to zfs-stats, as it's output is not limited to ARC anymore. Continue reading "Viewing ZFS statistics with zfs-stats" »
Posted by
Martin Matuška
in FreeBSD, ZFS at 11:17 | Comments (2)
Select language: German, Slovak, English

Monday, 11. October 2010

ZFS talk at the EuroBSDCon 2010 conference

FreeBSD ZFS
ZFS talk at EuroBSDcon 2010
Last weekend (8.-10.10.2010) I held a talk at the EuroBSDCon 2010 conference in Karlsruhe, Germany.

It is probably the most popular european BSD conference and it is being attended by many developers of FreeBSD, NetBSD and OpenBSD. The talks covered innovations in the BSD operating systems and new projects have been presented, too.

I personally liked the Journaled Soft-updates talk by Marshall Kirk McKusick and the Contiki - The OS for the Internet of Things talk by Oliver Schmidt.

My talk was called Quo vadis ZFS and was about the ZFS filesystem with focus on the present state of the availability and development of ZFS. Presentation slides for download: 2010-EuroBSDCon-Quo-vadis-ZFS.pdf Continue reading "ZFS talk at the EuroBSDCon 2010 conference" »
Posted by
Martin Matuška
in FreeBSD, ZFS at 16:36 | Comments (2)
Select language: German, Slovak, English

Wednesday, 22. September 2010

SPF patch for Postfix

FreeBSD
SPF (sender policy framework) is a working but disputable method of SPAM protection. It prevents fake sender addresses.

I have updated the SPF patch from Nigel Kukard for Postfix 2.7.1, fixed IPv6 support and added the permissive option "permit_spf_valid_sender". With this patch the libspf2 library is called directly from Postfix. This patch is already available in the FreeBSD mail/postfix port as a selectable option.

Update 2011-02-07: I have updated the patch for 2.8.0

Patch README:
postfix-2.7.1-libspf2-1.2.x-4.README.txt
postfix-2.8.0-libspf2-1.2.x-4.README.txt

Patch download:
postfix-2.7.1-libspf2-1.2.x-4.patch
postfix-2.8.0-libspf2-1.2.x-0.patch Continue reading "SPF patch for Postfix" »
Posted by
Martin Matuška
in FreeBSD at 23:12
Select language: German, Slovak, English

Monday, 6. September 2010

Help testing ZFS v28 in FreeBSD

FreeBSD ZFS
Pawel Jakub Dawidek has released a patch [1] to test ZFS version 28 in FreeBSD development version (9-CURRENT). The patch is highly experimental and not guaranteed to work correctly. We want to correct any bugs and issues related to this patch.

What is new in v28 (compared to v15)?
  • data deduplication
  • triple parity RAIDZ
  • removal of log devices
  • zfs diff
  • zpool split
  • snapshot holds
You can read more about various ZFS pool versions in my previous article [2]. Continue reading "Help testing ZFS v28 in FreeBSD" »
Posted by
Martin Matuška
in FreeBSD, ZFS at 11:36
Select language: German, Slovak, English

Saturday, 24. July 2010

FreeBSD 8.1 released

FreeBSD
FreeBSD
A new release of of the FreeBSD operating system is available: 8.1-RELEASE

Hot features include:

- ZFS version 14
- zfsloader (boot from ZFS disks, mirror and raidz)
- NFSv4 ACL (Access Control Lists) support in UFS a ZFS Continue reading "FreeBSD 8.1 released" »
Posted by
Martin Matuška
in FreeBSD at 10:30
Select language: German, , Slovak, English

Tuesday, 13. July 2010

ZFS version 15 in FreeBSD

FreeBSD ZFS
ZFS - The last word in file systemsAfter several weeks of testing and a discussion at the meetBSD 2010 conference I have successfully imported into the FreeBSD operating system (development branch 9-CURRENT) an update of the ZFS file system to version 15.

What is new in this version?

1. Stability - more mature ZFS code, comparable to Solaris 10 update 8 with latest bugfixes
2. Compatibility - Solaris 10 update 8 default ZFS pools can now be imported into FreeBSD
3. Features - user and group quotas (ZFS-internal) are very useful for intranet fileservers that want to use ZFS
4. Speed - my real-world benchmarks give a 15-20% RPS yield in PHP webserver workloads with codebase on ZFS

The new version will take 2 months of testing and if there are no serious issues I will import it on 2010-09-12 into the 8-STABLE branch. Continue reading "ZFS version 15 in FreeBSD" »
Posted by
Martin Matuška
in FreeBSD, ZFS at 09:00 | Comment (1)
Select language: German, Slovak, English

Monday, 5. July 2010

mfsBSD talk at the meetBSD 2010 conference

FreeBSD
mfsBSD - meetBSD 2010 Kraków
mfsBSD talk at the meetBSD 2010 conference in Kraków
Following the success of the last year's talk at the EuroBSDCon 2009 conference in Cambridge, UK I have presented my mfsBSD project at the meetBSD 2010 conference in Kraków, Poland on July, 3rd.

The conference was very successful and once again, I have met many known people from the FreeBSD project including Paweł Jakub Dawidek who I work with on importing new ZFS versions to FreeBSD, Warner Losh, FreeBSD Security Officer and FreeBSD Core Team member or Dru Lavigne, chair of the BSD Certification Group. The talks were mainly about different parts of the FreeBSD operating system, its deployment by large scale companies and some new innovative approaches were presented, too.

The presentation is available on youtube.com Continue reading "mfsBSD talk at the meetBSD 2010 conference" »
Posted by
Martin Matuška
in FreeBSD at 10:00
Select language: German, Slovak, English
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