[yocto] Install rootfs.tar.bz2 to ${D}/home/root/

[Fabien Lahoudere]

On Wed, 2017-04-05 at 11:21 +0000, Maier, Chris wrote:
> Hi,
>  
> I want to create a deployable SD card image. My board (beaglebone based) boots from SD card and
> runs a script which copies the rootfs.tar.bz2 to the flash memory.
> So how can I deploy a copy of the whole rootfs to ${D}/home/root?
> A rootfs in the rootfs, does that make sense?

I don't think it is good if both rootfs are based on the same image.

>  
> Any help is appreciated.
> 

My first idea will be to create an install image for sd card depending on your image rootfs tarball.

$ cat installer-image.bb
...
do_rootfs[depends] += "original-image"

ROOTFS_POSTPROCESS_COMMAND = my-copy-image-to-installer-rootfs

my-copy-image-to-installer-rootfs() {
  cp ??.tar.bz2 ${D}/home/root
}

But maybe it is not the best solution.

You can look at meta/classes/image-live.bbclass which provides a similar mechanism.

>  
> Chris
> 	i.A. CHRIS MAIER 
> Software-Entwicklungsingenieur 
> 
> Phone: +49 7152 203 6741 | Fax: +49 7152 203 76741 | C.Maier at geze.com 
> GEZE GmbH, Reinhold-Vöster-Straße 21-29, 71229 Leonberg | www.geze.com 
> 
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