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Re: Use genimage for disk-image creation.

From: Mathieu Othacehe
Subject: Re: Use genimage for disk-image creation.
Date: Sun, 29 Mar 2020 20:13:30 +0200
User-agent: mu4e 1.2.0; emacs 26.3


> I’m completely sold to the idea.  :-)

I'm glad you like it!

> Looking at ‘image-ext2.c’ reveals that genimage actually just shells out
> to mke2fs.  Indeed, I discovered that ‘mke2fs -d /my/root’ copies
> /my/root as the image’s root directory.  Likewise, for ISO, it just
> shells out to ‘genisoimage’.
> So I think that we could avoid ‘genimage’ altogether and implement
> similar functionality for ext4/ISO in (gnu build disk-image).

Ok! One useful functionality of genimage seems to be that's its capable
of creating complex partitioning layouts. Of course we can re-implement
it in (gnu build disk-image), but I don't know how complex will it be.

Danny, I found the genimage files for each arm/aarch64 boards inside
Buildroot repository. They are a valuable source of information, but
regardless of the decision we take for (gnu build disk-image), we can
find a way to import them and store them as Guile records. 

I guess I'll start a small implementation to have a clearer view of this

Thank you all for the feedback,


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