Description An Update Module to install binary delta rootfs updates on a device. This Update module is available with a commercial Mender plan. Please refer to the Mender.io product page for more information about commercial plans, and sign up for a free trial for Mender Professional here . Example…

Why this update module depend on Yocto?

@shainert.israel Hi This could be run on other systems also, however, Yocto is set as a dependency due to the read-only rootfs requirement. So this is where we test it.

Is this update’s generation and deployment based on full roofs partition binary file delta or is file based delta? I mean, when generating the update, does it take as input a base rootfs image file and a target rootfs image file and create a binary diff, or it mount them both and compare the file-s…

Hi @oleorhagen , I didn’t understand your answer, please see a clarification of my question (edited). Thank You

Hi @shainert.israel , I’m sry, my response was a bit short. It does the former. Meaning that it creates a binary diff from two rootfs images. No mounting is done. In fact, currently we are using the xdelta binary diff algorithm

Is this also available with debian images for raspberry pi?

Not out of the box I am afraid. The reason is that the deltas need a read only filesystem to work on, and this is not the case for the raspbian debian images. I guess it should be possible though, but I have not looked into it myself. Another way of doing this could be to maybe write an rsync upda…

Is this something that will be supported out of the box in a Debian image eventually? This lack of support causes us to not use Mender in our product.

It depends mostly on Raspbian/Debian. The problem is that Debian isn’t typically installed in a read-only mode. You can take a look at this document to see how to use a read-only image with Debian. If you can get that working, then Binary Delta updates should work as well. But my gut feeling is that…

Robust delta update rootfs

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Robust delta update rootfs

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