• Linux,  Work

    A wise server migration

    Yesterday I migrated two servers at work to a new machine. The old machines were pretty underpowered: a Pentium III 1 Ghz system (with 384 MB RAM if I remember correctly) and a Pentium 4 system. The new machine is a Dell Poweredge R410 with a Xeon E5504 processor, 12 GB RAM and a PERC H700 RAID controller (which is actually a LSI MegaSAS 9260) with 3 750 GB SATA disks in RAID 5. The hardware is pretty nice (although I am not happy at all with the way Dell treats its customers, so I will rather prefer other vendors in the future, but maybe more about that in a…

  • Linux,  Mandriva

    Migration to virtual machine

    I just finished migrating this website to a new KVM virtual machine. The virtual machine is running Mandriva Cooker (2010.0) now with kernel 2.6.31-rc9 and the virtio drivers. The host machine is a HP DL185 G5 running Debian Lenny (kernel 2.6.26) and kvm 85. During the next days, there might be some short downtime now and then while I continue configuring things

  • Linux,  Work

    Server migration

    Since two days, I have merged the main servers used by two research laboratories at work. One server was an old Linux server which really needed a hardware upgrade, and the other one was a Mac Pro machine running a flaky OS X Leopard. The new server is of course running Linux: Debian Lenny. It was a very interesting experience: working out procedures to migrate the mailboxes (from Dovecot on the Linux server and Cyrus on the Mac server to Cyrus on the new server), finding out how to set up one NIC in two different subnets (especially the routing is a little bit tricky), getting all services hooked up…

  • Linux,  Mandriva,  Work

    Using KVM on Mandriva 2009.0

    Introduction My new Dell Latitude E6400 laptop, is my first system which support hardware visualization. It also has 4 GB RAM, making this an ideal machine to start experimenting with KVM, the kernel based virtual machine system which is now integrated in Linux itself. In the past I had already used different virtualization systems. VMWare Server is annoying because you have to rebuild the kernel modules by hand each time you install a new kernel and it’s not Free (as in Free Speech). Virtualbox handles the modules rebuild nicely thanks to the use of DKMS in Mandriva, but always randomly crashes on an assert, making it totally unusable for serious…

  • Linux,  Uncategorized

    Virtualbox 1.4

    Only one week after I had no success with running Virtualbox on my Athlon 64 system, a new version was announced. One of the important changes in Virtualbox 1.4 is support for AMD64 hosts, so this seemed exactly what I was looking for! To test new distributions and software, I have already been using VMWare Server for some time, which is free (read: it costs nothing), but a real Free (as in free speech) virtualisation solution always sounds interesting, especially as Fedora 7 always crashed VMWare Server and my host. Installation of Virtualbox was very easy. It has been packaged and integrated in Mandriva, so a simple “urpmi virtualbox” sufficed…

  • Linux,  Uncategorized

    Good things ahead!

    Today I got an account on Mandriva’s build cluster! This means it will be easier for me to submit RPM packages for inclusion in the distribution. I’ve still got a lot to learn, but with some reading on the wiki and the greatly appreciated help from Dvalin, this will work out fine in the end. Currently working on a package for DrScheme, which is a Scheme IDE also used at university here. Virtualbox released version 1.4.0 of their virtualisation software today. Especially interesting is that they added AMD64 support according to the changelog. This will probably fix the problems I was experiencing a few days ago when trying Virtualbox on…

  • Linux,  Uncategorized

    Virtualisation mess

    I have downloaded the Fedora 7 installation DVD ISO and wanted to give it a try in a virtual machine. I am using VMWare Server already for some time as it was the first free (as in free beer) available feature-complete and fast virtualisation software. I Created a virtual disk, configured the ISO as source for the CD device, and started up the virtual machine. But then while booting the Fedora 7 kernel, VMWare just crashed, also making my host OS unstable, so I had to do a hard reset. I was still using VMWare Server 1.0.1, so I tried an upgrade to 1.0.2 with latest vmware-any-any patch, but all…