I have a Thinkpad W541 that's been running F24 XFCE for a very long time. Since that's gone EOL, I decided to jump to F26. I've used dnf-system-upgrade in the past to go to F23 and to F24 without issue.
This time, however, no such luck.
After downloading the packages and invoking dnf-system-upgrade reboot, it would begin the boot sequence but would hang at the "Starting Switch Root..." message.
This behavior was documented in bug report #1406829
. I followed the suggestion in the report to download the SRPM for systemd and rebuild against my running F24 kernel.
That got me past the boot freeze, but now the reboot does not seem to trigger the upgrade process...it just reboots again and loads back into my previous F24 kernel. I don't see anything obvious in the journalctl output, but I'm attaching it here anyhow.
I'm at a loss as to how to troubleshoot from here. I've validated that my installed version of libdb (5.3.28-24) contains the "fix" for the corrupted RPM database issues.
Any help would be greatly appreciated.