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John Goerzen
Works at eFolder, Inc.
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John Goerzen

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A hilarious article, suggesting systems programmers are more useful than locksmiths in a zombie apocalypse.

Favorite quote among many good ones: "if a misaligned memory access is like a criminal burning down your house in a fail-stop manner, an impossibly large buffer error is like a criminal who breaks into your house, sprinkles sand atop random bedsheets and toothbrushes, and then waits for you to slowly discover that your world has been tainted by madness.

Indeed, the common discovery mode for an impossibly large buffer error is that your program seems to be working fine, and then it tries to display a string that should say “Hello world,” but instead it prints “#a[5]:3!” or another syntactically correct Perl script, and you’re like WHAT THE HOW THE, and then you realize that your prodigal memory accesses have been stomping around the heap like the Incredible Hulk when asked to write an essay entitled “Smashing Considered Harmful.” "

http://research.microsoft.com/en-us/people/mickens/thenightwatch.pdf
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Yes, thanks; edited to add.
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John Goerzen

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In an intriguing post, PragDave laments how empty the word “agile” has become. To paraphrase, I might say he’s put words to a nagging feeling I’ve had: that there are entire books about agile, conferences about agile, hallway conversations I’ve heard…
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I heard that same sort of discussion at PyTN in Nashville. Attendees were complaining that various other companies weren't doing agile correctly.
I disagreed, but my opinion was not popular.
I tried to tell them that agile was a reaction against big design up front, and that's all you need.
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John Goerzen

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I am trying to find a laptop with all-day battery life that’s fairly light. Perhaps I am dreaming too big here, but I thought I’d toss out my hopes and see if there are any recommendations. I am hoping for: Battery life around 9 hours powered up Fairly…
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It happened to me!
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My new blog post: Backing up every few minutes with simplesnap #ZFS

I’ve written a lot lately about ZFS, and one of its very nice features is the ability to make snapshots that are lightweight, space-efficient, and don’t hurt performance (unlike, say, LVM snapshots). ZFS also has “zfs send” and “zfs receive” … Continue…
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A restore is just the backup process in reverse: zfs send from the backup server, zfs receive on the receiving end.  It should be faster than any filesystem-level tool could be, since it is a more low-level zfs stream.
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+John Goerzen I didn't try the caching options myself, because my goal in using 9p was host/guest FS consistency. Searching the web for `9p fsync`:  I think the 9p protocol implements fsync but I'm not sure which cache modes send through fsync (or what the easiest way to test that is).
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John Goerzen

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Battery life on the Samsung Chromebook is quite superb, and getting Linux on it instead of ChromeOS is quite simple.
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I have never before needed to send a "I can't fix the server; I'm at an opera" text.  Thankfully there was someone else that could fix it that wasn't.
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Can't fix the server. I'm in the oval office.
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Interesting: Jaywalking: How the car industry outlawed crossing the road  http://www.bbc.co.uk/news/magazine-26073797
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Many :-) but not a single good one... I have many materials which describe their problems but they're all in french... I decided to quit using their servers years ago and swear to myself to never get to it again, even if their pricings are the best of the market since many years...
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People
Have him in circles
1,016 people
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John Alexander's profile photo
Work
Occupation
IT Director, programmer, sysadmin
Employment
  • eFolder, Inc.
    VP of IT and Engineering, 2011 - present
  • Mennonite Bethesda Society
    Chair of Board of Trustees, 2005 - 2012
  • Self-employeed
    Consultant, Developer, and Author, 1999 - 2012
  • Excel Industries, Inc.
    IT Director, 2002 - 2011
  • Software in the Public Interest, Inc.
    President & Chairman of the Board, 2003 - 2006
  • Progeny Linux Systems
    Sr. Software Developer, 2000 - 2001
Links
Links
Story
Tagline
Author, Programmer, Amateur Radio Operator, Dad, Kansan
Introduction
I live out on an old farmstead in rural Kansas that once belonged to my grandparents. The nearest paved road is about 3 miles away, and the nearest town (population 600) is 7 miles away. I have two incredible boys, ages 3 and 6.

My hobby and profession involves programming and system administration. I have released many programs as Free Software, which you are welcome to download, examine, and share. I am a developer for the Debian GNU/Linux operating system, and have been since the late 1990s. I've written some books about programming and operating systems.

Hobbies

I have a lot of them: amateur radio, bicycling, photography, philosophy, literature, rail travel, etc.  There is a better list on my personal website.

Volunteer Interests

I'm a developer for Debian GNU/Linux, chair of the board for Mennonite Bethesda Society (a non-profit operator of a nursing home), a volunteer for the Amateur Radio Emergency Service and Skywarn.

For more

Please visit my website.

Bragging rights
Still managed to keep that 5th antenna off my car
Basic Information
Gender
Male
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