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The ext4 filesystem

Theodore Ts'o
on
The ext4 filesystem


Ted will talk about his experiences developing and maintaining the
ext4 filesystem, which is currently the default filesystem on most
Linux distros, and is now the default filesystem shipped with the
majority of Android devices on the market today. In addition Ted will
be presenting a highly technical overview of ext4, covering all of its
major features, strengths and areas for future improvement.

More Information:
ext4

About Theodore Y.  Ts'o:
Theodore Y. Ts'o is a software developer mainly known for his
contributions to the Linux kernel, in particular his contributions to
file systems. He is the primary developer and maintainer of e2fsprogs,
the userspace utilities for the ext2 and ext3 filesystems, and is a
maintainer for the ext4 file system. "Ted" is also a Debian Developer
responsible for maintaining a number of filesystem related packages.

Join or login to comment.

  • Robert M.

    The video has been reuploaded to YouTube in 720p: http://youtu.be/2mYDFr5T4tY

    February 21, 2013

  • Edward F.

    Thanks for the video.

    If it's not asking too much, could you or whoever posted the video, briefly describe what tools were used to convert the video? I would be interested in the methods used.

    January 15, 2013

    • Robert M.

      We don't do any postprocessing, only transcoding. We use an ffmpeg-based tool called Handbrake to transcode the raw DV into a YouTube-friendly format. We would like to do some postprocessing work to make our videos a little nicer. If anyone has experience in that field and would like to help out, please reach out to the organizers for more info.

      January 16, 2013

  • Brian G.

    Video, as promised: http://www.youtube.com/watch?v=ZldQ0eWJwWk

    Thanks to Rob and David, for their tireless efforts helming our video team.

    January 15, 2013

    • Mike Z.

      Thanks Brian. Your tireless efforts are what set this user group aside and make it great.

      January 15, 2013

    • Robert M.

      I'm going to work on getting an HD version of the video posted; I don't shoot at 1080p for nothing. :)

      January 15, 2013

  • Mike Z.

    Many thanks to Ted, the AV team, and Google for providing the venue. The video is great!

    January 15, 2013

  • Joe K.

    I've worked on a wide array of systems and platforms and it's always great to see a speaker who not only presents the topic so well, but also acknowledges the advantages of competing systems, and the limitations and advantages of the system in his own area of expertise.

    1 · January 13, 2013

  • Aliaksandr S.

    Great talk, very informative! Thanks!

    January 13, 2013

  • Steve Y.

    I'm the opposite of a low-level systems developer: I do UI development, design, and research. Nonetheless, I've always been intrigued by core OS technologies (such as filesystems), since we all are reliant upon them. Ted's talk was great, and it strengthened confidence in my decade+ use of ext[2-4].

    January 12, 2013

  • Edward F.

    Was the talk recorded? It is available online?

    January 11, 2013

    • Brian G.

      It was recorded and should be online within a week.

      1 · January 11, 2013

  • Reginald D.

    Very informative. Thanks for hosting! I got a lot out of it. Looking forward to more like this.

    1 · January 11, 2013

  • Vietnhi P.

    I really liked the presentation. The best part of the meetup, of course, is the informal discussion after the talk was officially over. Any good presentation bout design raises interesting, fundamental, questions about design goals, choices and trade=offs even as it answers others, and this presentation is no exception:)

    1 · January 11, 2013

  • Adam G.

    Very educational talk. Much appreciated.

    January 10, 2013

  • Gregg C L.

    Good. Now that I know more about the things behind the scenes regarding a filesystem, I can watch my Linux systems run properly and even that much better.

    January 10, 2013

  • A former member
    A former member

    The talk was great and Ted is not a nerd at all who like him did not even mention implementing details. The limitation of spots seems not that tough and only a few people stood. The huge waiting list might scare some folks and the fact was since you come you are in. The signing paper was interesting and I even saw Ted's signature there. In a word, I felt like I I were at yet another technology company, rather than google the giant.

    January 10, 2013

  • nick c.

    super badass!
    all i could want to know and more. got me so interested in the kernal and filesystem i downloaded the .o1 kernal. just to check it out

    January 10, 2013

  • Emil W.

    A thorough description of ext4 development, with lots of technical details to get my teeth into. I enjoyed it.

    January 10, 2013

  • Alex T.

    Excellent talk!

    January 10, 2013

  • Brendan G.

    It was great! So much information!

    January 10, 2013

  • Mike Z.

    That was a great talk indeed! Are most of the non beginner meetups of the same caliber or would you consider this one to be exceptional?

    January 10, 2013

    • Mike Z.

      Also how's the pub? I waited around for the crowd but it didn't arrive in the 30 minutes so I left.

      January 10, 2013

  • Wilken R.

    Great talk! Thanks for hosting.

    1 · January 10, 2013

  • Forest M.

    It looks like I may not be able to make it this evening. Please give my spot to someone on the wait list, thanks.

    January 10, 2013

  • David J.

    Please make the slides available

    1 · January 10, 2013

  • CHARLES O.

    I will definitely be there and I will like the speaker to touch on information that will help new geeks in LINUX System administration. High level issues to understand and apply in in Linux system administration.

    1 · January 10, 2013

    • Vietnhi P.

      My recommendation is that you talk to the experienced ones after the presentation. My best guess is that most of us are major Linux bitches and we wouldn't like the presentations dumbed down to keep noobs happy. We are willing to help you getter better and stronger at Linux but you'll have to do the heavy lifting on your own.

      January 10, 2013

    • Zee A.

      I couldn't agree more. The title of this talk isn't "Linux Systems Administration" or even "Linux Storage Administration", but is in fact "The ext4 file system". Let's keep it at that.

      January 10, 2013

  • doug k.

    "Ted will talk about his experiences developing and maintaining the
    ext4 filesystem, which is currently the default filesystem on most
    Linux distros, and is now the default filesystem shipped with the
    majority of Android devices on the market today"

    I AM ON THE WAITING LIST RIGHT NOW AND ANYWAY I HAVE A FAMILY WEDDING IN CROWN HEIGHTS AT THE SAME TIME ON THE
    SAME DAY. WILL THE PRESENTATION BE RECORDED AND AVAILABLE ON THE WEB AT A LATER TIME?

    January 2, 2013

    • doug k.

      thanks are the lectures recorded. Is an archive available for members?

      January 2, 2013

    • James M.

      Videos are available on Youtube at http://www.youtube.co...­

      January 2, 2013

  • Gregg C L.

    Well it should be open now, but, ah, I'm going.

    December 27, 2012

  • michael

    I'm always ahead of the curve.

    December 27, 2012

  • michael

    Rsvps are closed until today, but they are still closed. What?

    December 27, 2012

    • Brian G.

      They should open at 4pm.

      December 27, 2012

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