Hi all, newbie here.
The Problem
I was following the rockcraft tutorial and ran into the 'Error: Failed instance creation: Failed creating instance record: Failed initialising instance: Failed getting root disk: No root device could be found\n'
error when trying to rockcraft pack
. I couldn’t find any meaningful help here or on stack overflow. Perhaps the error is new with the mix of versions that I use.
How did it come to this:
Possibility A: I’ve installed rockcraft before I’ve installed lxc and lxd.
Possibility B: I’ve run rockcraft pack
before lxd init
.
The system ended up in a state, where lxd/lxc were usable, but the rockcraft
lxd project didn’t have a root device. I struggled for a while, but couldn’t come up with a magical incantation to fix that.
The Fix
sudo snap remove rockcraft --purge; sudo snap install rockcraft --classic
Theory
Perhaps, when rockcraft
is installed, the installation process creates the rockcraft
project in lxd
. If lxd
is not available, this step is skipped, and will not be retried later, when lxd
is installed.
Alternatively, it’s about the order of project creation vs. lxd init
.
Environment
Ubuntu 24.04
amd64 (vm)
rockcraft --classic
(snap)
> rockcraft --version: deleting current features configuration; rockcraft 1.3.2
lxd --channel=latest/stable
> lxc --version: 5.21.1 LTS
(lxd via snap)
> lxc-info --version: 5.0.3
(lxc via apt install)
microk8s --channel=1.30-strict/stable
(snap)
> juju --version: 3.5.0-genericlinux-amd64
(via snap)