[yocto] minimize size of SW update bundle

[Alexander Kanavin]

On 10/17/2017 04:12 PM, Robert Berger wrote:
> Imagine you have only a limited bandwidth to your devices available for 
> SW update. So you would like to minimize what's uploaded (over the air) 
> to your devices.
> 
> How would you do this with yocto?
> 
> [1] and [2] might be able to do incremental updates, but maybe there are 
> more ideas out there.
> 
> Like how would you get a diff between two release builds...
> 
> [1] https://wiki.yoctoproject.org/wiki/Meta-swupd
> [2] https://github.com/advancedtelematic/meta-updater

If you want to stick with desktop-style rpm package feeds, then there's 
deltarpm, but YP doesn't currently support it, and I don't know if it's 
still used by anyone. From what I remember, it did cut down on the 
downloads time, but installation became much slower.

Alex