Using chroots in a single Linux Container as an alternative to docker-compose

Talk by Aiden McClelland (details linked in the Reference section below).

The talk is centered around StartOS. An operating system designed to enable non-technical users to self-host open source software.

The OS hosts this via containers. With the base philosophy ‘one container = one service/app’. This makes managing IP addresses easier, and managing resources easier.

The OS uses LXC to manage the containers. Aiden claims this is more composable than docker compose or podman.

Where have the woman of tech history gone

First talk of this year’s FOSDEM (not counting the opening talk).

Talk by Laura Durieux (see the link at the References at the bottom of the page for more details).

The talk started with the question why women were underrepresented in the syllabus. This lead to the question why there is a focus on men, and who decides what makes it to the syllabus.

Zettelkasten notes

Somewhere during my Ph.D. I started to use the Zettelkasten style of note taking. For my research this was quite useful. Now in my programmer life after the Ph.D. it is less usefull as I can clearly see that it geared towards academics.

What is a Zettelkasten?

I’ve written a note on what a Zettelkasten is here.

Public notes

I’ve setup a link between my Zettelkasten repository and this website. When I tag a note ‘public’ it automatically becomes a post on this website. The reason I opted for a tag filter is that I don’t want to publish anything I take a note of. Sometimes these are private, sometimes these are just ramblings. But sometimes, it may be worth something to someone. The major downside of this approach is that there may be broken links. If a note refers to another note which is not public the link wil be served a 404 Not Found.

#computers #linux

Created: 2023-12-08 13:30

The Linux dm-flakey target is the same as the linear target except that it exhibits unreliable behaviour periodically. It’s been found useful in simulating failing devices for testing purposes.

To use it do the following:

sudo dmsetup create <name> --table "<begin-sector> <size> flakey <source-device> <offset> <period-normal> <period-faulty>"

This would create a block device under /dev/mapper/<name> which forwards IO to <source-device> for <period-normal> after which it returns IO errors for <period-fault>.

Created: 2023-11-14 13:10 #git

git log --oneline --graph $(git merge-base master HEAD)^..HEAD master

This command shows the relation between the current head (HEAD), master and their common ancestor. It does the following:

1. git merge-base master HEAD retrieves the common ancestor between master and HEAD.
2. git log <options> <common ancestor>^..HEAD logs the commits between the parent of the common ancestor and the HEAD.

References

1. git fixup.