Tag Archives: technology

I’m migrating my files and apps to my new MacBook Pro. A highly anticipated improvement was connecting my Drobo S to a USB 3.0 interface, instead of my previous laptop’s USB 2.0 bus.

During my migration, the Drobo Dashboard advised me that a Drobo firmware update was available. I did the update, which -boom- bricked my Drobo.

After trying rebooting, power-cycling the Drobo, and plugging it into the other USB socket, I’m at a point where Drobo Dashboard says the Drobo is healthy. But OS X won’t mount it. Disk Utility says:

Unable to bootstrap transaction group 6000: cksum mismatch
No valid commit checkpoint found
The volume xxxxxxx was found corrupt and needs to be repaired.
Problems were found with the partition map which may prevent booting
Error: This disk needs to be repaired. Click Repair Disk.

I then run Repair Disk, and it tells me the same thing! So Repair Disk can’t repair the disk!

I bought DiskWarrior (for $109, I’ll have you know) but it can’t repair a disk that isn’t mounted. They’ll ship me a physical CD-ROM of my purchase, so I can try booting from it. Oh, but wait, my MacBook Pro/Retina doesn’t have a CD-ROM drive!

I am not a happy camper.

We license a vendor’s services for corporate information, like annual revenue and office locations. Their name shall be kept confidential in this story.

We access their API via http calls. They call it a REST API. But like 95% of the “REST” APIs in the world, it’s not REST at all, and in fact nowhere near REST. The term “REST” has been corrupted to be become synonymous with, “web API”.

But whatever. It’s an API accessed with http calls.

One of service calls has a parameter called, “countryCode”, which was documented as an ISO 3166 country code.

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Boy, what a roller coaster! Shortly after opening a position for a Senior Devops engineer, we had a funding “event” and now the opening’s gone. What’s worse, I had to lay off one of my developers, right before before the end-of-year holidays. It was stressful for all involved.

We’re doing some interesting things with name relationships at work, and these present fun development challenges. I’m trying to spend as much time as possible in Emacs, because the less-fun work issues always occur when I’m not coding.

I upgraded our codebase to version 3 of Celery, just to get us off version 2. I’m still hankering to replace Celery, but it must have known it was living on borrowed time because it’s been behaving lately, so I’ve decided to fry some bigger fish. But the moment Celery starts acting up again…

I just turned 55. How the hell did that happen?!?

This week, I switched our systems-level monitoring from Cacti to Munin.

I was dissatisfied with Cacti’s interactive-only configuration and limited OOTB charts, and its reluctance to correctly display the processor %U of my multicore servers. I tried the oft-cited suggestion of cloning the existing %U graph into a new template and bumping the maximum to 1,200% (for a 12-core server); no good.

I have a, “I have bigger fish to fry” mindset lately, and I want something that does (mostly) the right thing OOTB without having to delve into the source code.

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My wife owns a NOOK Simple Touch with GlowLight.

Our home router in an Apple Airport Extreme, the latest model.

The NOOK worked flawlessly when she first got it. But starting three weeks ago, it forgets our home network credentials about once a week.

Nothing’s changed in our network configuration. The Airport’s location hasn’t changed. No other electronics in the house have moved. We don’t have any new electronics.

We asked for help at the Barnes & Noble on Pine Street. The help desk person said, “Gee, it hooks up to our network just fine, so, it must be your wireless router.” She was not helpful.

Nothing else in our house has network connectivity problems! Not my personal MBP, my work MBP, my wife’s iMac, my iPad, or our two iPhones. Only the NOOK has a problem.

I wonder if its NVRAM (or whatever it uses to remember network credentials) is sick. But this thing is only a few months old.

No, I don’t have network sniffer software, nor do I want to download a sniffer and learn out to use it. I shouldn’t have to resort to that for an e-reader.


Sometimes you don’t write unit tests. Your reason for not doing so always falls into one of two categories.


The code you just wrote would be so much easier to test using system-level testing. For example…

  • The setup and teardown would be 10x the test code.
  • There’s too much interaction with multiple data stores or third-party vendors.
  • Your dev boxes or CI server don’t all have the necessary technology installed.

These are rational reasons to not write unit tests for new code. You’re fine.


But sometimes you don’t write unit tests because the code you just wrote is so darn obvious.

It’s really simple. It’s straightforward. It’s nearly trivial. Why both writing unit tests for it?

Well, I’ll tell you why you should test it. In fact I’ll give you three reasons.
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I’m playing more with Noteshelf and thinking about how I use a whiteboard. And I’m noticing aspects of my sketching for the first time…

My drawings mutate a lot as I create them:

  • I’ll start out leaving space for objects (e.g., server boxes, database symbols), and then decide the objects need more space. (For practical or esthetic reasons.)
  • I’ll assign colors to different entities, and later change the color assignments.
  • I’ll start recording attributes A, B, and C for state transitions, and then decide to drop B and add attributes D and E.
  • It’s very rare that nothing has to change. But even then, I’ll wish I could move the whole diagram on the whiteboard or page in toto, because it’s grown in a direction or to an extent that I didn’t anticipate.

I often wish I could do a diagram twice — once as a dry run, once “for real.”

These alterations happen more often to my drawings than they do for others. At least, it seems that way to me.


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