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I find myself building up lots of versions of SD images as I incrementally develop a working system. Is there a way to manage this better, such as by capturing the SD image backup not as a img/gz but in a way that git can version control?

Grateful for any advice on how to approach this with dd plus any words of wisdom on the general approach.

  • It depends how you are doing the changes? Offline then write to SD or changes on the SD? – Piotr Kula Nov 30 '14 at 21:42
  • Have you considered a basic disk image, and then applying your changes using puppet or similar confiig management tool. It may take a little more time than burning a new complete image, but it does avoid storing/managing multiple images. – Steve Robillard Nov 30 '14 at 22:05
  • @ppumkin I'm just making changes to the working raspberry and backing-up externally – geotheory Dec 1 '14 at 12:52
  • @steve-robillard I haven't considered anything like that. Could you possibly point to any tutorial or guidance with more detail? – geotheory Dec 1 '14 at 12:52
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    I would start here nofail.de/2013/01/pulling-strings-on-raspberry-pi (but assuming you are using Raspbian would just install via sudo apt-get install puppet) I am assuming that the various copies differ in what packages/services are installed and running. With puppet you can create a manifest, store it in github and reuse individual bits (e.g. install git and create a .giconfig file). Puppetlabs also has an entire section devoted to learning puppet - puppetlabs.com/learn Also several books are available for the beginner I would recommend Puppet 3 Beginner’s Guide. – Steve Robillard Dec 1 '14 at 23:17
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My approach would be somehow different, but I think its worth to try it:

Clone this repo: https://github.com/Metrological/buildroot and try to build image with it. It's quite straightforward.

Then, you can make changes to it and keep record with git easily.

That is what I do for my RPI projects and it works great. Performances and very good (better than with Raspbian or Arch) and you have full control over whole OS.

  • Thanks. That toolkit looks to go much further than this question HTML5 etc. But I'm a bit confused as it talks about being loaded onto the Pi. Does it work by version-controlling the boot partition from the 'buildroot' partition? – geotheory Dec 1 '14 at 12:49
  • I think you got it wrong. buildroot is set of scripts which are in version control system. Those scripts generate system images, including boot/ partition files and whole root filesystem. You will not have compiled binaries in version control, but scripts that can generate those binaries (this is how it is supposed to work). – 10robinho Dec 1 '14 at 14:11
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As long as you don't have any requirements on real external HW (usage of GPIO et al) an alternate approach would be to run the image on kvm/qemu. Then you can create as many snapshots as you need.

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