Archive for the 'Computers' Category

Published by kyle on 18 Jul 2008

Grub on a DL380

Having had the misfortune to be editing the partition table of one of our Oracle servers, I discovered that Grub 0.97 (the SLES SP1 variety) doesn’t play well with DL380 Smart Array Controllers. The magic auto detection that we’ve all grown to know and love just… it just doesn’t. Here’s how to regain that Grub magic…

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Published by kyle on 15 Jul 2008

An Idea

It’s probably already been covered, but my 30 seconds of Google-Fu hasn’t turned anything up so bear with me…

Take one OpenMoko phone,  a geolocation service like Fire Eagle, an online celltower database such as CellDB, and some code to use those lovely d-bus bindings, and you could have a location reporting service that’s easy on the battery and mostly precise in urban areas. If your area isn’t covered by CellDB, then run around with the OpenMoko GPS reciever online for a while to report celltower locations, and you’re sorted.

Use all of the above to create services like Socialight, location based Twittering, rough geotagging for photos (courtesy of Flickr and FireEagle [both Yahoo companies]) , pre-emptive OSM tile downloads, Asterisk routing - you could even implement ex-girlfriend logic to it all, if she were to have a similar device :-)

Well, I’m sure someone has thought of this already, but I thought I would commit ideas to storage just in case. Once my FreeRunner arrives, I know what I’ll be working on

Published by kyle on 15 May 2008

UK is Embargoed

Now, I don’t claim to keep up with the news as it happens when it happens, but I’m sure I would have heard about the UK being embargoed by the USA… Instead, I seem to be hearing of it 2nd hand through Sun Microsystems…

Java Embargoed

Published by kyle on 22 Feb 2008

Are we still terrorists?

It would appear so…

To: postmaster@cityoflondon.police.uk
CC: Kenny.MacAskill.msp@scottish.parliament.uk, public.enquiries@homeoffice.gsi.gov.uk

Dear City of London Police,

I see that we still have not had a response to this request for information. Please can you provide the answers that we seek, or suggest alternative routes to go down. If we are to be arrested without good reason, we would like to know how best to respond to the incorrect assumptions made by the police.

Regards

Kyle

Published by kyle on 30 Jan 2008

Mappers are terrorists?

A recent public email I wrote, after the worrying quotes published in http://thescotsman.scotsman.com/latestnews/Festival-is-key-terror-target.3723328.jp

To: postmaster@cityoflondon.police.uk
CC: gm39@st-andrews.ac.uk, Kenny.MacAskill.msp@scottish.parliament.uk, info@rcahms.gov.uk, public.enquiries@homeoffice.gsi.gov.uk

Hi,

This is a public email, also available at http://lodge.glasgownet.com/mappers-are-terrorists/
I have also included some other recipients that may consider raising this issue at a higher level, may also be affected, or may be able to comment further on the situation.

Recently, the City of London Police Head of Counter-terrorism gave a talk to the public in Edinburgh regarding the issue of terrorism to the people of Scotland, and Edinburgh in particular. This, however, raises some concerns with myself and my fellow project workers. Myself, and over 23000 others, do voluntary work for the OpenStreetMap project (http://www.openstreetmap.org/). This is a collaborative effort to map the world, and originated in the UK itself. We work to free ourselves, and everybody else, from the constraints of expensive, inadequate and copyrighted maps. In short, we aim to do for maps what Wikipedia did for encyclopedias.

To do this, we drive the streets of our country, and many others, with GPS receivers ensuring roads are mapped properly. We use cameras to verify our work, and to keep records. Similarly we draw maps of junctions, take notes of amenities, shops and anything else that is of use to everyone. We have a special deal with Yahoo to use their satellite imagery for the mapping of roads, but we still use GPS to verify these, and will still take pictures of shops, post boxes, bus stops, junctions, buildings, and so on… We even go as far as writing down house numbers, so that the next generation of in-car satnav can use our data to effectively get you to your destination.

All this flies directly in the face of Mr Lovegroves recent comments, quoting from http://thescotsman.scotsman.com/latestnews/Festival-is-key-terror-target.3723328.jp

“This means noticing people who suddenly start appearing at a café and perhaps draw maps of the surrounding area. It could be someone using video equipment where it wouldn’t normally be done,”

“We mustn’t be stereotypical – a terrorist is just as likely to be a white, blonde woman as opposed to the image many people may hold.”

Given that I was born and brought up in Glasgow, I’m paler than even the average Brit. I am also likely to pull up at the side of the road, take some pictures, write on my notepad, and then drive off again. I may even be on foot or bicycle, and have a bag full of equipment from notepads to gps recievers, to cameras and pocket computers.

I would like to know what efforts you are making to ensure that the police, and the public alike, are not being thrown into a frenzied state of paranoia? To ensure that people like myself, my colleagues, and other projects of a similar ilk are not unjustly victimized due to your over-generalization. I would also like to know what we should do in order to avoid being incorrectly labeled as terrorists by the police and the public? Although the ubiquitous yellow hi-vis jacket will go far in making a person invisible to the eye, it is not the complete solution in this case. We are in danger of being arrested and unfairly held for a 4 weeks (possibly 6 or 7…) under anti-terrorism laws, just by doing our hobby, our voluntary service to the community.

Your answers, and advice, would be greatly appreciated.

Kyle Gordon

Published by kyle on 26 Jan 2008

The O2 Lives!

DSC00015For a while now, my SGI O2 has languished in the cupboard after being diagnosed with an unknown fault. I decided to dig it out again and have a quick look at it. Powering it up seemed successful, and I got the audio chime but no display. A quick bit of googling suggested that when no keyboard is attached, it will automagically redirect all output to the serial console. Connecting a standard ps2 keyboard cured all my woes :-)

Next task will be to get the hard drive out and connected to another machine so I can set the root password to something I know.

Published by kyle on 14 Jan 2008

High resolution fonts

For a while now, I’ve been running Kubuntu x64 on this shiny Dell D820 laptop. It runs at quite a high resolution for a laptop (1920×1200), and the Nvidia drivers try to be smart by increasing the font dpi. This has the knock on effect of making the fonts ugly and large. It can be countered with a simple tweak to /etc/X11/xorg.conf


Option "UseEdidDpi" "FALSE"
Option "DPI" "96 x 96"

Once that’s done, save your file, exit X, and restart X. Alternatively you can restart your computer.

Published by kyle on 26 Nov 2007

Hadoop

A while back I mentioned Hadoop as The Next Big Thing. Looks like demand has been high in the intervening months, and the Yahoo Developer Network has recently announced a new blog all about Hadoop. An open source Mapreduce implementation with a scalable, clustered and highly redundant storage system? Yes please… Now you can keep up to date with your favourite RSS reader.

Published by kyle on 10 Oct 2007

MythTV Remote

For a long time now, our MythTV setup at home has been entirely reliant on the full sized wireless keyboard sitting on the coffee table to control it. I’ve had two Hauppauge Nova-T remotes sitting idle for a long time now, pending me getting my finger out and making them work. Well, it’s finally done. A big thanks to Garry Parker and his MythTV Tips page.

The handheld remote now has full control over the MythTV install, from volume and channel navigation, to menu navigation and playback control. All done through the evdev kernel interface, with a handy smattering of LIRC support.

Published by kyle on 03 Sep 2007

iSCSI

Lately a Howto has appeared, detailing how to set up iSCSI on Linux. I first set up and used iSCSI almost 2 years ago, back when it was a little known buzzword. Microsoft were still on v1 of their free initiator, UNH had theirs, and linux-iscsi seemed to be the most promising and workable initiator around. Now it’s beginning to compete with FC and Netapp kit, Dell are hedging their bets on VM machines on iSCSI backends, and Open-iSCSI rule the roost.

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