Ubuntu-image unable to build a simple armhf image

snapcraft
1

Hello forum members.

This one is a bit of a head-scratcher, I cannot get around it to build a simple image for my OrangePi R1.

Ubuntu-Image throws me this error:

error: cannot use snap “orangepi-r1-kernel-ruhan_0.1_armhf”, parallel snap instances are unsupported
COMMAND FAILED: snap prepare-image --channel=edge --snap=orangepi-r1-kernel-ruhan_0.1_armhf --snap=orangepi-r1-ruhan_16-0.1_armhf.snap models/orangepi-r1-uc16.model /tmp/tmp3ngomiws/unpack

Here is my model file:

{
“type”: “model”,
“series”: “16”,
“model”: “ruhan-ubuntucore”,
“display-name”:“Ubuntu Core 16 (armhf)”,
“architecture”: “armhf”,
“kernel”: “orangepi-r1-kernel-ruhan”,
“gadget”: “orangepi-r1-ruhan”,
“authority-id”: “removed for security purposes”,
“brand-id”: “removed for security purposes”,
“timestamp”: “2021-08-14T17:00:00+00:00”
}

Kernel and gadget snapcraft yaml files:

name: orangepi-r1-ruhan
version: 16-0.1
summary: Orange Pi R1
description: |
Bootloader files and partitoning data to create a
bootable Ubuntu Core image for the Orange Pi R1.
type: gadget
base: core

architectures:

  • build-on: amd64
    run-on: armhf

confinement: strict
grade: stable

parts:
uboot:
plugin: nil
–snip –

name: orangepi-r1-kernel-ruhan
version: ‘0.1’
#adopt-info: kernel
summary: Linux kernel for OrangePi R1
description: |
kernel for OrangePi-R1

grade: stable
confinement: strict
type: kernel

architectures:

  • build-on: amd64
    run-on: armhf
    –snip–

I have tried a model file with the “base” property added, removed it, compiled gadget with and without a base, still the same error.

I have reverted my snapcraft to the legacy 4.x version,

snapcraft --version
snapcraft, version 4.8

snap info snapcraft
name: snapcraft
summary: easily create snaps
publisher: Canonical✓
store-url: https://snapcraft.io/snapcraft
contact: https://forum.snapcraft.io/c/snapcraft
license: GPL-3.0
description: |
Package, distribute, and update any app for Linux and IoT.

Snaps are containerised software packages that are simple to create and install. They auto-update
and are safe to run. And because they bundle their dependencies, they work on all major Linux
systems without modification.
commands:

  • snapcraft
    snap-id: vMTKRaLjnOJQetI78HjntT37VuoyssFE
    tracking: 4.x/stable
    refresh-date: yesterday at 18:44 SAST
    channels:
    latest/stable: 5.0 2021-08-09 (6751) 58MB classic
    latest/candidate: ↑
    latest/beta: ↑
    latest/edge: 5.0.1.post6+git50600144 2021-08-06 (6777) 58MB classic
    5.x/stable: 5.0 2021-08-09 (6751) 58MB classic
    5.x/candidate: ↑
    5.x/beta: ↑
    5.x/edge: ↑
    4.x/stable: 4.8 2021-06-03 (6512) 74MB classic
    4.x/candidate: ↑
    4.x/beta: ↑
    4.x/edge: ↑
    installed: 4.8 (6512) 74MB classic

Any ideas?
I have been searching for the kernel sources, found it after a hefty amount of digging.
I plan to release this snapcraft.yamls on my github, so that you can build an image for your OrangePi R1 as well.

2

is there a .snap missing in your command ?

3

Hello, it is only these two on the ‘ubuntu-image’ command.

ubuntu-image snap -c edge --snap orangepi-r1-kernel-ruhan_0.1_armhf --snap orangepi-r1-ruhan_16-0.1_armhf.snap -O images models/orangepi-r1-uc16.model
And yes, the snaps have been copied over, so the files is present in the current directory.

4

you are still missing .snap at the end of the kernel snap name …

5

Oh, simple mistake. I was executing this command in a script, to save me some time, did not notice it.
I realized my mistake just when I posted. Thanks.

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