Yocto does not support or test upgrading from one yocto release to the next through dnf. Nothing conceptually prevents it, but you need to set up and test such upgrades yourself, and send any needed fixes upstream.
Alex On Fri 19. Jun 2020 at 14.16, Hugh Boddington < [email protected]> wrote: > 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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