[yocto] [meta-swupdate] failed update leads to kernel panic

[Zoran Stojsavljevic]

> However if I abort the update while running (i.e. simulating a power cut)
> and then reboot I end up in a kernel panic: "Unable to mount rootfs on
> unknown block". My understanding is that I should at least end up in a
> busybox or that the update is retried, but this does not happen.

You missed to attach failed dmesg while the system booted and aborted.
Nevertheless, I expect problem with your defconfig, which does NOT
have options set for initramfs. These ones:
https://github.com/ZoranStojsavljevic/bbb-yocto/blob/master/custom/config-initramfs

Please, could you add these one to your current .config, this might
very well solve your problem.

Best Regards,
Zoran
_______

On Fri, Jun 14, 2019 at 10:15 AM Moritz Porst <Moritz.Porst at gmx.de> wrote:
>
> Hello,
>
> I am currently having trouble to get swupdate working properly.
> My problem:
> I can execute swupdate -i normally and if the update fits I have no problem. However if I abort the update while running (i.e. simulating a power cut) and then reboot I end up in a kernel panic: "Unable to mount rootfs on unknown block". My understanding is that I should at least end up in a busybox or that the update is retried, but this does not happen.
> I receive 1 error when updating which does not stop the update: "Could not find MTD".
>
> My configuration:
> I have a single rootfs and a separate boot partition. I build the initramfs using:
> ---
> IMAGE_INSTALL = "base-files \
>                base-passwd \
>                swupdate \
>                busybox \
>                libconfig \
>                util-linux-sfdisk \
>                mtd-utils \
>                mtd-utils-ubifs \
>                ${@bb.utils.contains('SWUPDATE_INIT', 'tiny', 'virtual/initscripts-swupdate', 'initscripts sysvinit', d)} \
>                 "
> ---
> This is taken from swupdate-image. I include the same packages (via _append) in my base image, is this necessary ?
> I bundle the initramfs with my image using INITRAMFS_IMAGE_BUNDLE = "1"
>
> Can you see a mistake I made ?
>
> Best regards
> Moritz
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