Re: [meta-rauc] How to generate update bundle: With genimage or with recipe?

["Enrico Jörns" <ejo@pengutronix.de>]

Hi Bernd,

Am Montag, dem 21.11.2022 um 12:20 +0000 schrieb BAUER Bernd:
> Hi!
> 
> I use genimage for image generation.
> This is an A/B system.
> The bootloader is u-boot and switching the root partitions already works.
> 
> Looks something like this...
> 8<------------------------------------
> 
> 8<------------------------------------
> 
> Now I want to create an update bundle for one of the system partitions with rauc.
> What is the best way to make the update bundle here?
> With a recipe and "inherit bundle"?

this is the recommended way with meta-rauc, yes.

Since you only need the root file system image, this should be very little effort to create a bundle
recipe. Just have a look at

https://github.com/rauc/meta-rauc/blob/master/recipes-core/bundles/core-bundle-minimal.bb 

> Or should I do it with genimage?

Generating bundles with genimage is possible, too (as e.g. PTXdist does this), but I do not see any
benefit here in this constellation.

> I did this with a recipe and used my rootfs recipe as base.

(Ok, so my above example should not even be needed ;) )

> Here I get an update bundle out, that is about 3GB big. This much too large.

How did you get a 3 GB image for you (< 512MiB?) rootfs? Thus the images in your deploy dir should
have the same size? Maybe you have configured a large free space (IMAGE_ROOTFS_SIZE,
IMAGE_ROOTFS_EXTRA_SPACE or IMAGE_OVERHEAD_FACTOR)?


Best regards

Enrico

> Greets Bernd
> 
> 

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