Linux

“You sound like a broken record” Is something we complain when someone repeats again and again the same concepts. But even broken disks can sometime be useful DISCLAIMER: No filesystem or device were harmed in the making of this experiment 😉 Image credits: Mick Haupt In this article I would like to explore the powerful tools we have in Linux to simulate dealing with broken disks, that is, drives that more or less randomly report errors. Why is this important ? Because by simulating errors that will also happen sooner or later in the real world, we are able to create software that is more robust and can withstand any problems on the infrastructure. ...

Intro 🚌 D-Bus is a message bus system and standard for inter-process communication, mostly used in Linux desktop applications. Both Qt and GLib have high-level abstractions for D-Bus communication, and many of the desktop services we rely on export D-Bus protocols. Also the omnipresent systemd can be only interfaced via D-Bus API. However, D-Bus has its shortcomings — namely a lack of documentation. In this article we’ll explore how to write our own D-Bus Service in Rust and connect it to our D-Bus client. ...

The Good 😇 Today I decided to submit an openSUSE package update for the nim compiler. It went almost all well but unfortunately I faced a problem: on the i586 platform it fails to build. ...

intro Resource isolation is an hot topic these days, and it’s a problem excellently solved by containerization. However, we can achieve isolation between internal tasks of an operating system by leveraging a technology exposed by the kernel: cgroups. This component is also used by Docker, and other Linux container technologies. Cgroups are the Linux way of organizing groups of processes: roughly speaking a cgroup is to a process what a process is to a thread: one can have many threads belonging to the same process, and in the same way one can join many processes inside the same cgroup. ...