Glusterfs on ZFS with a mount problem

I am experimenting with glusterfs on zfs on xenial, to solve some network share problems. Here are the steps to create a compressed zfs volume using only a partition (and not the full disk). Some zfs fine tuneing, gluster brick creation, and solving the zfs import problem with glusterfs. Continue reading “Glusterfs on ZFS with a mount problem”

Stepper Motor Controller a la Arduino

This is a relatively easy recipe, for beginners. The idea behind the project was that there was a need for fine stage control in the laboratory and a Thorlabs motorized actuator (like the old ZST25 or the newer ZST225B) + controller can be quite expensive. So I made my own Harder, Better, Faster, Stronger version.

Continue reading “Stepper Motor Controller a la Arduino”

FreeBSD 10 installed with tftp on a Amilo L7320

The Background Story: TL;DR

I had a little spare time this weekend, and wanted to put a new OS on my Fujitsu Siemens Amilo L7320. The laptop is now ~8 years old, and my opensource deep-dive started with it. I installed my first Ubuntu 7.10 on this machine to replace the preinstalled Windows XP. And no dual booting, no turning back! (sadly this changed…)*

It was a deep dive, because X11 was not working and I had to hack my own xorg.conf. I hate the Via Unichrome GPU, but around Ubuntu 10.04 the openchrome driver was doing it’s job out of the box. The CD/DVD drive died after 1,5 years (before 9.10, so I had to make my on TFTP/PXE install server. You might ask why didn’t I use a USB Stick, and boot from a “USB Storage Disk” as the bios suggests. Well, the machine won’t boot from any USB Installer, because “Invalid partition table”. So no iso dd/imgwriter. It can boot from grub2 or lilo, so it needs a mbr? I don’t care. TFTP/PXE is good for me. And there were other problems, like the clock and the whole system hanged if there was no user input or cpu load (this was on kernel 2.6.35 and some more kernels above). But with Xubuntu 12.04.5 the machine was working OK. But it was time to make the change and try a new OS…. FreeBSD. Thanks to Allan & Kris. Continue reading “FreeBSD 10 installed with tftp on a Amilo L7320”