LibVirt Monitor Plasma Applet

This semester I attended Advanced Topics of Linux Administration course on my university. To successfully complete the course, one must pass an exam, have a presentation and write an article on a related topic. I had a presentation about libvirt and decided to write an introduction into using libvirt's API (the article has been published (in English) on Czech Linux portal

As an example, I have written a Plasma Applet in QML (yay, my first QML thingie!) and a Plasma DataEngine that serves data about QEMU/KVM virtual machines running under local libvirtd.

On the applet you can watch state of all virtual machines, you can boot/pause/resume/shutdown and reboot them and configure soft and hard memory limits and amount of virtual CPUs allocated to each machine.


Plasma Virt Monitor DataEngine Plasma Virt Monitor Applet Plasma Virt Monitor Applet

I must admit that I was always a bit skeptical about QML, but my two previous encounters with QML made me really curious about it and writing this applet was really painfun and it taught me a lot about QML.

The big advantage of the DataEngine is that it's not constantly polling libvirt for changes, but it rather utilizes it's events API.

Wanna try? :-) There's a tarball here and git repo here: git://

It was fun to hack and I plan to give it some more love, possibly after Akademy.

PS: Akademy - anyone flying on Friday at 08:10 from Vienna :-) ?