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Technical Details Behind the LAN-Party Optimized House
New submitter Temporal writes "Yesterday, Slashdot reported on my LAN-party optimized house. But, lacking from the internet at that time were key technical details: How do I boot 12 machines off a single shared disk? What software do I use? What does my network infrastructure look like? Why do I have such terrible furniture? Is that Gabe Newell on the couch? The answer is a combination of Linux, PXE boot, gPXE, NBD/iSCSI, and LVM snapshots running on generic hardware over generic gigabit ethernet. I have even had several successful LAN parties with a pure-Linux setup, using WINE."
Honestly I'm kicking myself for not having written everything up before going public. The vast majority of people who saw the original post will not see the technical details. :/
I can't imagine a single machine serving out over iSCSI to have performance acceptable to play any modern, intensive game. How's it all work?
I couldn't imagine it either, but it turns out it works fine. Obviously the load times aren't blazingly fast but no one has ever complained about them being slow either.
Note that most games load all data upfront. Once they've done that, the game runs without doing much I/O.
Also note that an iSCSI image can be fully cached client-side, so if you load the same game twice, it's probably going to load directly from RAM the second time. (Most games are 32-bit so there's a good 4GB of RAM in the machines doing not much other than disk cache.)
"I purchased 12 copies of Windows 7 Ultimate OEM System Builder edition, in 3-packs. However, it turns out that because the hardware is identical, Windows does not even realize that it is moving between machines."
Yeah. I actually learned this after having purchased only one 3-pack, but went ahead and bought three more 3-packs just to be legal. With this much attention paid to my setup, I don't want to be caught pirating.