root# sudo dnf system-upgrade download --releasever=42 -y
root# dnf5 offline reboot
run the 1st command to get all fc42 packages you need, checking no conflicts or missing deps, and as prompt, run the 2nd cmd to upgrade.
if you hit some dependencies broken issues, remove those packages temporarily and retry.
Neal Becker <ndbecker2@xxxxxxxxx> 于2025年4月18日周五 21:56写道：
--On Fri, Apr 18, 2025 at 9:23 AM Richard Shaw <hobbes1069@xxxxxxxxx> wrote:On Fri, Apr 18, 2025 at 8:01 AM Neal Becker <ndbecker2@xxxxxxxxx> wrote:On Fri, Apr 18, 2025 at 8:34 AM Richard Shaw <hobbes1069@xxxxxxxxx> wrote:On Fri, Apr 18, 2025 at 7:29 AM Neal Becker <ndbecker2@xxxxxxxxx> wrote:I just tried updating a lenovo laptop from F40 to F42 usingsudo dnf system-upgrade download --releasever=42sudo dnf system-upgrade rebootThis machine is a bit slow (not a lot of memory) so I didn't hang around to watch, but about 10 min later it's running again, and still on F40.Any suggestions?Any ideas how to see the logs related to what happened?I've never tried to jump two releases although it's supposed to be supported, but I've had this happen when I used to maintain a couple local repositories and it wouldn't pull the updated packages into the transaction.More than likely the transaction check failed. Depending on how many times you've booted since the upgrade attempt something like "journalctl -b -1" should work and then search for when the upgrade started.pr 18 06:53:01 nbecker2 dnf-3[866]: Error:
Apr 18 06:53:01 nbecker2 dnf-3[866]: Problem: The operation would result in removing the following protected packages: kernel-core
Apr 18 06:53:01 nbecker2 dnf-3[866]: (try to add '--skip-broken' to skip uninstallable packages)
Apr 18 06:53:01 nbecker2 systemd[1]: dnf-system-upgrade.service: Main process exited, code=exited, status=1/FAILURE
Apr 18 06:53:01 nbecker2 systemd[1]: dnf-system-upgrade.service: Failed with result 'exit-code'.
Apr 18 06:53:01 nbecker2 systemd[1]: Failed to start dnf-system-upgrade.service - System Upgrade using DNF.
Apr 18 06:53:01 nbecker2 systemd[1]: dnf-system-upgrade.service: Triggering _OnFailure_= dependencies.When I had run sudo dnf upgrade --refresh I had trouble running because there wasn't enough space on /boot, so I edited /etc/dnf/dnf.conf to setinstallonly_limit=2which allowed dnf upgrade --refresh to proceed. I now have 47% usage on /boot. But this error seems related, because I saw the same error when I tried to remove old kernels before I set installonly_limit=2.I don't suppose there's any useful output above the error?One option would be to update to the F42 kernel since they'll generally work across releases:sudo dnf --releasever=42 update kernelI did:sudo dnf system-upgrade download --releasever=42 --allowerasing --bestNote that it runs and passes transaction check and test before reboot.Then I also ran:sudo dnf --releasever=42 update kernelThis time when rebooted I got:Apr 18 09:48:34 nbecker2 dnf-3[870]: Error: The following problems occurred while replaying the transaction from file "/var/lib/dn>
Apr 18 09:48:34 nbecker2 dnf-3[870]: Cannot find rpm nevra "kernel-core-6.8.7-300.fc40.x86_64".
Apr 18 09:48:34 nbecker2 dnf-3[870]: Cannot find rpm nevra "kernel-modules-6.8.7-300.fc40.x86_64".
Apr 18 09:48:34 nbecker2 dnf-3[870]: Cannot find rpm nevra "kernel-modules-core-6.8.7-300.fc40.x86_64".
Apr 18 09:48:34 nbecker2 dnf-3[870]: Cannot find rpm nevra "kernel-modules-extra-6.8.7-300.fc40.x86_64".
Apr 18 09:48:34 nbecker2 systemd[1]: dnf-system-upgrade.service: Main process exited, code=exited, status=1/FAILURE
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