Archive for the ‘Technical’ Category

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

ISA is not fast

Using a pair of ISA IDE controllers for a mirror, and an ISA NIC is a recipe for sloooooow. md2 : active raid1 sda3[2] sdb3[1] 425600 blocks [2/1] [_U] [====>…………….] recovery = 24.3% (104064/425600) finish=10.5min speed=508K/sec Oh yeah.

March 30, 2010 · agw · No Comments
Tags: , ,  · Posted in: Debian, Technical

Wireless network revamp completed

Nearly completed, anyway. The way it wound up is the old WRT54GL with DD-WRT still holds the internet connection. The WRT610N is bridged to it over LAN, and both the 2.4GHz and 5GHz networks are in use there. Final result is three wireless APs set up. The G network contains devices that only want to […]

March 25, 2010 · agw · No Comments
Tags:  · Posted in: Technical

This post served over wireless

After deciding I was probably never actually going to get around to running CAT-5 in the new house, at least not in the near term, it was time to do something about the abysmal transfer rates offered by the powerline networking I had been using.

March 19, 2010 · agw · No Comments
Tags: , , ,  · Posted in: Technical

Dead hard drives from flight sim project: 2

I like to say all hard drives fail, it’s just a matter of when. Well while going through hardware to build these flight sim boxes, so far two drives have turned up bad. Both were working when stored. Mirror everything unless you want to lose it!

December 12, 2009 · agw · No Comments
Tags:  · Posted in: Technical

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

Keeping NetBSD and pkgsrc up2date

Carl Sagan said, “If you want to make an apple pie from scratch, you must first create the universe.” This kind of reminds me of doing security updates on NetBSD. It appears there are various efforts to provide binaries, but the official way as of NetBSD 5.0 is to do it yourself. Obviously, NetBSD’s security […]

July 25, 2009 · agw · No Comments
Tags: , , ,  · Posted in: NetBSD, Technical

Crummy displays

I bought two “reman” Viewsonic displays a couple years ago. They have never worked 100% right, but they were fine as long as I used just the right cable in just the right video card port. Once I found the magic configuration, I just don’t touch it and it’s fine. The exception is if I […]

July 23, 2009 · agw · No Comments
Tags: , ,  · Posted in: Technical

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
Tags: , , ,  · Posted in: Debian, Linux, Technical