Entries by Martin Matuška

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Saturday, 26. February 2011

Updated Tutorial: Debian GNU/kFreeBSD in a FreeBSD jail

FreeBSD
In my last article about FOSDEM 2011 I wrote about visiting the Debian GNU/kFreeBSD presentation. What I was interested in - if it is possible to run this inside a FreeBSD jail or at least in a chroot. My results have been positive, so in this article I am providing a tutorial how to easily set up a Debian GNU/kFreeBSD jail on FreeBSD. Remember that the functionality may be limited.

Requirements: FreeBSD 8.1+ i386 or amd64, experience with FreeBSD and jail(8) Continue reading "Updated Tutorial: Debian GNU/kFreeBSD in a..." »
Posted by
Martin Matuška
in FreeBSD at 00:05 | Comments (8) | Trackback (1)
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Friday, 18. February 2011

Article in BSD Magazine: ZFS and FreeBSD

FreeBSD ZFS
An article of mine with the title "ZFS and FreeBSD" was published in the February issue of the free online publication BSD Magazine. The target group of this magazine are users and friends of BSD operating systems.

The article summarizes the ZFS features, gives an overview of supported operating systems, provides links to useful resources and gives some FreeBSD tips.

Link to the free PDF issue: BSD Magazine 02/2011
Posted by
Martin Matuška
in FreeBSD, ZFS at 00:07
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Tuesday, 8. February 2011

FOSDEM 2011 - ZFS talk in BSD devroom

FreeBSD ZFS
Last weekend (February 5th-6th) I visited the FOSDEM 2011 conference in Bruxelles, Belgium. The conference was crowded and many open source projects have been presenting their latest work. The FreeBSD project (where I am developer at) was present with a stand and I met several co-developers there. There have been lots of interesting talks, I was mainly interested in the Debian GNU/kFreeBSD presentation and the various MySQL and PostgreSQL talks - topics I deal with every day.

On Saturday, February 5th, I held a ZFS talk in the BSD devroom called "ZFS in Open Source Operating Systems" that was based on my previous talks. Download PDF with presentation slides Continue reading "FOSDEM 2011 - ZFS talk in BSD devroom" »
Posted by
Martin Matuška
in FreeBSD, ZFS at 15:26 | Trackback (1)
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Friday, 21. January 2011

Tutorial: native ZFS on Ubuntu and Fedora Linux

Linux ZFS
ZFS is a great filesystem and making it available for Linux opens a bridge between Solaris, FreeBSD and Linux.

KQ Infotech has released the source of their ZFS port to the general public, using pool version 28. You can get more information at their webpage: kqstor.com Source code is available at github.com.

In this arcicle I am giving a tutorial how to build from source and install packages of native ZFS kernel modules for Ubuntu/Debian and Fedora Linux.

You need a x86_64 version (64-bit) of the Linux distributions.

NOTICE: tutorial is obsolete, please visit Native ZFS for Linux Homepage Continue reading "Tutorial: native ZFS on Ubuntu and Fedora Linux" »
Posted by
Martin Matuška
in Linux, ZFS at 11:53 | Comments (11) | Trackback (1)
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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

Wednesday, 1. December 2010

ProFTPD distribution file replaced by hackers

Security
I am the port maintainer of ProFTPD at FreeBSD and have just discovered that the latest ProFTPD distribution file has been compromised. The new file contains a rootkit and has been already distributed to ProFTPD mirrors.

The ProFTPD project has been informed about this issue.

UPDATE: The original file has been restored by the ProFTPD project (around 2010-12-01 15:00 UTC). Continue reading "ProFTPD distribution file replaced by hackers" »
Posted by
Martin Matuška
in Security at 13:46
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

Monday, 15. November 2010

Smbldap-tools back on track with new version 0.9.6

The smbldap-tools project (founded by Jérôme Tournier) maintains a set of perl scripts to manage users and groups stored in a LDAP directory.
It focuses on samba installations and supports LDAP mail routing schema, too.

The project has been inactive since April 2008, leaving a bunch of open bugs. I have been maintaining the smbldap-tools FreeBSD port since 2007 and wrote several patches and bugfixes. Last month I contacted Jérôme if I might join the development team because my set of patches started to grow. Jérôme accepted me and I pushed all my changes into SVN at gna.org. Continue reading "Smbldap-tools back on track with new version 0.9.6" »
Posted by
Martin Matuška
at 20:24
Select language: German, Slovak, English

Autocreate and autosieve patches for Cyrus IMAP Server 2.4

Cyrus IMAP Server [1] by the Carnegie Mellon University is my favourite IMAP server.
It operates independenent of other system parts and supports server-stored SIEVE scripts for incoming mail processing.
The Autocreate INBOX and autosievefolder patches [2] by University of Athens are very useful patches for LDAP-based installations of Cyrus IMAP. Continue reading "Autocreate and autosieve patches for Cyrus IMAP..." »
Posted by
Martin Matuška
at 17:18 | Comment (1)
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)
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