Category Archives: tech

How to create a swapfile on a btrfs filesystem

Some things you should be aware of: Linux Kernel 5.x supports swapfiles natively on btrfs This is a bit of a kludge. Summary: Btrfs does not natively support swapfiles as the kernel wants them to be contiguous blocks on disk.To … Continue reading

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Netapp Network testing with iperf3

Here’s an interesting NetApp thing I was playing around with. There’s a command in diag mode: “network test-link”, which is ostensibly to test throughput between nodes. In the man page, it mentions that it is based on iperf3 — Just … Continue reading

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Quick Little Powershell Script

Here’s a quick little powershell script I wrote to illustrate the relationship between Aggregates, Shelves, and raid-groups for a student who was a little confused as to their relationship: $raidGroup = 0; $shelf=1; $rgSize=8; $shelfBays = 24 $numShelves = 2 … Continue reading

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How changing my homepage let me loose forty pounds and start a company.

How changing my homepage let me loose over forty pounds and start a company. Simple technique where you can use google docs as a home page to track goals and actions towards those goals. Continue reading

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More Human than Human

I’ve been working on a startup project on the side for almost a year now – focusing on pattern recognition, natural language processing stuff, and predictive statistical modeling… it’s been fun. Continue reading

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Would you participate in this kind of contest?

I’m thinking, along w/ some people I’m working on a start-up with, of running a contest to help up “train” the back end “artificial intelligence engine” which is used in our software. Here’s the gist: you would log-in to a … Continue reading

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Cool things I’ve gotten to play with at my startup

For the last year or so I’ve been working on a tech startup with some friends. In doing so, I’ve gotten to work with some pretty cool stuff, and I thought I’d make a list of some of them. Continue reading

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A quick perl script for used car research on craigslist

After carmax tried to gouge me, I thought I would test the open market and write a quick perl script to give me the average price for an item on craigslist -in this case a car. Here’s how it works and the code is below. It should be really easy to modify for anyone who could use something like this: Continue reading

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Playing with Bayes

For the last day or so I’ve been playing with moving over my simple word-count-analysis of blogs to actually creating a database with manually ranked training data and extrapolating from that. There were some hiccups and I’ve still got to go back and replace a lot of code, but it’s effectively categorizing new blog entries based on previous rankings. YAY! Continue reading

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An alternative approach to snaprestore rollbacks for virus outbreaks

overview Netapp’s snap restore product is a fantastic tool in a storage admin’s arsenal. It works well. It’s fast, and it doesn’t need to “restore” data, it just makes a previous snapshot the active file system. That said, I keep … Continue reading

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