I have arrived in Berlin today. I’m staying in the excellent A&O Hostel on the Köpenicker Straße. Luckily, they still haven’t fixed their wireless, so I have mostly-free internet here. The problem is that when you logout from the AP, the statetable isn’t flushed, so if you establish a vpn connection to the outside, point your default gw over it and use keepalives it’s possible to stay connected. Cool stuff, cool hostel

Right now we’re viewing the closing ceremony stream. The FTP server is still pumping, doing 20.9MB/s atm. Some quick calculations show that we have did a sustained 7.6MB/s over the complete time the FTP server was up, including the downtime we had In the end, we had more uptime then the NetApp filers they had here (2 x 4TB, got pwnd for a while and one of them broke down) so that makes us the biggest FTP server on CCC camp.

Wow, lots of fun here. First of all, pictures are here. I spent the first two days trying to keep the ftp server we have running here alive. It ran pure-ftpd, which is a really cool ftp server. Unfortunately, when it get’s hammered it tends to pull the host operating system (or atleast a part of the network stack) down, causing FreeBSD to not transfer socket connections from the kernel to userland and Ubuntu gives a very nice cpu lockup bug, causing the system to crawl to almost a standstill. In the end we solved it with a dedicated ftp frontend with gbit uplink and proftpd, along with lots of extra disks and filesrv that was reachable over a private gbit nfs link, totalling out at approx 2.8TB Check out the pictures of the MononokeVille Guerilla FTP. While you’re watching those pictures, remember, I saw it push 40MB/s out to our clients

When we arrived yesterday, there was no network. After a while, the ppl from FreiFunk came by with a hacked-up access point delivering an olrs supported wifi mesh network. It did actually submit some packets to the internet, and some of them actually came back Today we built up most of the computer infrastructure, including plugging in my extreme into the 10gb ring. To our surprise, there was uplink on the ring, albeit it’s a 16mbit link from cogent. All is well though, fileserver is up and running. Peg dhcp will be fixed in a minute and then fileserver is going online too.