Re: [RAUC] Create bundles from command line outside of yocto?

[Brian Hutchinson <b.hutchman@gmail.com>]

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On Wed, Jun 16, 2021 at 1:06 AM Enrico Jörns <ejo@pengutronix.de> wrote:

> Hi Brian,
>
> Am Dienstag, dem 15.06.2021 um 17:32 -0400 schrieb Brian Hutchinson:
> > Ok, I think I figured out my problems.  Appears that I was using busybox
> > version of tar so I switched to the real thing (GNU Tar) and that fixed
> one
> > problem then I ran into a mkfs.vfat problem and I added dosfstools to my
> image
> > and that took care of that so now my bundle is updating correctly now
> ... so
> > sorry for the noise!
>
> glad you solved it!
>
> You could actually use busybox tar, too.  But then you need to make sure
> to have
> enabled format autodetection and the required compression algorithm, see:
>
> https://rauc.readthedocs.io/en/latest/integration.html#required-target-tools
>
> About your original questions:
>
> > So I should use "parent" to tie both kernel and appfs slots to the
> rootfs?
>
> Your system.conf (and parent relations) looked good from what I saw.
>
> > And for now, the rootfs is r/w on a ext4 filesystem, but in the future
> it will
> > be a squashfs.  So once that happens would 'type=ext4' then change to
> > 'type=raw'?
>
> Yes, 'raw' will be fine for squashfs as there is an explicit handler
> available
> for it. The 'raw' type ensures RAUC does not think it could mount the
> bundle for
> writing.
>
> If you have a separate shared data partition, then I would recommend to
> configure RAUC to use this for its status file (which cannot be located
> inside
> the slot anymore when having "ro by design"):
>
>   [system]
>   ...
>   statusfile=/path/to/datapart/rauc.status
>
> See https://rauc.readthedocs.io/en/latest/reference.html#statusfile


I'll check that out.  I'm using u-boot so I "thought" all the status stuff
was being done with u-boot environment variables via fw_setenv/fw_printenv.

Was it my imagination or did RAUC populate my rootfs during the update
faster than when I just mount and manually untar my rootfs?  How is it you
guys are faster?

Thanks again!

Regards,

Brian

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