Speeding up DNF and RPM using Copy on Write -- Matthew Almond

Speeding up DNF and RPM using Copy on Write -- Matthew Almond

A presentation from the 2021 FOSDEM CentOS Dojo.

This is an introduction to building and delivering Amazon Machine Images (AMIs) using CentOS Stream 8, Ansible, and the Linux System Role for Image-Builder with a tip of the hat to continuous testing. We'll connect some plumbing around including specfic applications, like Jenkins and wordpress, and explore loading content from github during the build. We'll be using the AWS parameter store to provide account acess to the images using a novel data type for identity.

[jimcamp]

At about 6:30 he talks through some disadvantages of a read-only filesystem, but I think that rpmostree is working on a way to apply changes to a live host. It's in beta, at the moment.

While it wouldn't resolve issues around reboots needed for kernel updates, i think it would solve for updates for packages like sudo.