Switching ext4 to btrfs on a VPS with no CD-ROM

The default filesystem on my VPS was ext4 and I wanted to use btrfs. However, the CD-ROM options were disabled so there was no simple way to boot a rescue CD and do the conversion. Happily, it was possible without opening a ticket to use GRUB to boot an ISO image. This will require console […]

December 10, 2015 · agw · No Comments
Tags: , , ,  · Posted in: Debian, Linux, Technical

kos-mos is dead, meet t-elos

The old file server was a beast. 2 2.4GHz dual-core Opterons, the old 90nm chips. 5GB (don’t ask) of RAM. And…2.7TB of storage, with a big pile of 250GB and 500GB drives mashed together into several arrays that were dumped into a volume group. The whole thing was encrypted just for kicks. There was also […]

March 7, 2011 · agw · No Comments
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leftwing sputters to life

The machine I plan to use for the view out the left hand side of the aircraft is now up and running. This machine wound up with the following specs: * Athlon XP 1800+ (1.533GHz) CPU * 1GB PC 2100 * NVidia FX 6200A 256MB * 8GB HD * Some CMedia sound card * Debian […]

December 7, 2009 · agw · No Comments
Tags: , , ,  · Posted in: Debian, Flying, Technical

Building the airplane: engines

With a new display for my main workspace upstairs, I now have three identical displays for use building my flight sim machine! Things have shifted around a bit hardware wise since the last time I attempted this. Then, I used a single dual-core system (Athlon 64 X2 4400+) with two Nvidia 7800GT cards to drive […]

December 3, 2009 · agw · No Comments
Tags: , ,  · Posted in: Debian, Flying, Technical

kos-mos is healthy again

With the receipt of a replacement drive that took about a year for me to send back for warranty repair, all the RAIDs in kos-mos are rebuilt and happy now. Seagate sent a 400GB model to replace the 250GB I sent out. Doesn’t gain me anything really since I don’t have any other 400GB drives. […]

August 7, 2009 · agw · No Comments
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HPT-366 finale: giving up.

Yeah, I’m a quitter. After having some more interrupt issues with the HPT-366 IDE controller in the old file server, this morning I decided to make another effort to get to the bottom of it. The issues I was having seemed to coincide with the tulip ethernet driver reporting various problems. First on the list, […]

July 5, 2009 · agw · No Comments
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NetBSD – intriguing.

I’ve been playing around with NetBSD lately. It all started from a desire to do some I/O benchmarks on the various UNIX and UNIX-like operating systems available for the Amiga. You can see the first results of that here. I decided to do NetBSD as it appears to be the only one among Amiga UNIX […]

June 27, 2009 · agw · No Comments
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Automatic notification of Debian package updates via cron

Very simple, and hinted at in the Debian APT HOWTO. I think I used to use a different package for this, but I think I like the simplicity of this method better. After installing apt-show-versions, I made the following entry in root’s crontab: @daily apt-get -q -q update 2> /dev/null && apt-show-versions -u root gets […]

June 20, 2009 · agw · 4 Comments
Tags: , , ,  · Posted in: Debian, Technical