zabbo

Alright, put yourself in the mindset of a server in my basement. You’re kind of sad that the guy who maintains you is a few thousand miles away. Then his lovely wife has the nerve to go to California. It’s pretty lonely down there. What do you do?

Yes, that’s right, you have a few fans fail. Then heat gathers in the top of your ancient PC case. Which causes the power supply, cleverly designed to sit in the top of the case where heat gathers, to fail. The faulty power supply pulls power from two drives in a four drive array which flips the array into degraded mode wherein it can only return errors. Which hangs the machine as ext3 gets IO errors in the journal. You’ll show them!

I’m quite lucky to live a few blocks from one of the most capable sysadmins that I had the pleasure of starting my career with. I gave him a call, we shared some Simpson’s quotes (mostly Professor Frink), and managed to get things up and running again. He was able to transplant a power supply from a neighbouring test box. Thankfully the power drop didn’t damage the drives. Phew.

This was made that much funner by the fact that I hadn’t yet synced the most recent CRFS changes from that machine to a box at Oracle. The source that I’m giving a talk about on Friday here in Melbourne. Where the source is intended to be released.

So, I guess this means I get to play Christmas on Newegg with PC hardware when I get back. Yay, prezzies!

Well, I’m heading down to Melbourne for LCA 2008 in a few hours. I’m not exactly excited by the length of the trip (SKW6084 and UAL839) but I’m definitely looking forward to attending LCA and to seeing Melbourne. It looks like a nice city. It’s a shame that I didn’t arrange to stay longer. Ah, well.

I’ll be giving a talk on CRFS while I’m down there. I did a practice run for a small audience of friendly Linux folks in Portland which was well received so I have high hopes that people at the conference will enjoy it. I know I certainly enjoy talking about this technology, but, well, I guess I would ;).

I thought I’d share a slide from the talk that I find geeky and satisfying:

The slide is demonstrating a particularly weird behaviour of the Linux NFS client adorably called silly renaming. I like the slide because it’s using a relatively small set of system calls to illustrate how differently NFS can behave than “local” file systems. I use it during the talk to illustrate one of my primary motivations for working on CRFS — that we have a network file system that doesn’t penalize its users by requiring that their applications know to work around its behavioural quirks.

Anyway, if this stuff interests you I hope you’ll come have fun at the talk with us.