Hello all,
I'm struggling conceptually with a recommended upgrade strategy for our
distribution (i.e. the resultant distribution on an ARM-based embedded device,
not the development SDK itself). I had initially assumed that a package
manager (we're using DNF) could be used to upgrade a distribution from one
version to the next, but every time I've used it to try to deploy a large
upgrade (e.g., Zeus->Dunfell) I've run into problems. Currently, if I try to
use DNF to upgrade from a Zeus-based distribution my DNF installation breaks
("ModuleNotFoundError: No module named 'dnf'") and I can't even shut the device
down ("/run/initctl: No such file or directory"). However, if I install the
Dunfell-based distribution from a raw image (without upgrading through Zeus)
then everything works fine. I'm not getting an errors in my build or
indication that something went wrong, but obviously something is amiss.
Questions:
1) Am I missing something? Is it reasonable to expect that I can upgrade the
whole distro using DNF? I've read the wiki page about System Updates
(https://wiki.yoctoproject.org/wiki/System_Update) and DNF (or any other
package manager) is not listed - does that imply it's not up to the job?
2) If I do continue using DNF, how do I troubleshoot the above issues? I
don't mean specifically those issues, but I want to learn to fish. Some
packages got broken. Was it caused by the distro I'm upgrading from? To?
What's the best way of tracing it back? I tried looking through the various
commits but obviously there were a lot of changes made from one distro to
another. The above scenario seems also to be a perfect storm because now that
DNF is broken I don't have a mechanism to downgrade anything.
I can't help but think that I'm swimming against the current here, or that I've
done something fundamentally wrong - I'd appreciate any insight or advice.
Thank you!
Hugh
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