A few days ago I started to upgrade my PowerStation from Fedora 15 (running my own rebuild) to Fedora 18 Beta.
The update from the running Fedora 15 to Fedora 16 was the really hard
part. It seems that the userspace moved from 32bit to 64bit and that was
something that yum, understandably, could not handle. So after the first
run of all packages updated to Fedora 16 (which required a lot of
rpm -e --justdb --nodeps --noscripts) and a reboot the system was
systemd tried to start
udev but that failed with:
[ 38.164191] systemd: udev.service holdoff time over, scheduling restart. [ 38.208255] systemd: Job pending for unit, delaying automatic restart.
systemd kept printing those lines forever. Luckily I still had the
original Yellow Dog Linux installation on a second drive and could
boot that. Unfortunately I could not chroot into the Fedora 16
installation because the Yellow Dog Linux kernel was too old, but I
was able to mount it and disabled every occurrence of
systemd. Rebooting with
systemd.unit=emergency.target on the kernel
command-line I was able to get the network running and reinstalled with
systemd ppc64 packages. After that (and some more
fiddling around) it rebooted into Fedora 16.
I then just followed the recommendations on the Fedora wiki to upgrade
The only difference was that I installed the gpg key, which is used to
sign the packages, from https://fedoraproject.org/keys using the keys
for the secondary architectures.
Now I have a PowerStation with the latest 64bit Fedora 18 Beta packages up and running.