Preupgrade from F17 to F18 Branched

John.Florian at John.Florian at
Wed Aug 15 20:19:16 UTC 2012

Hi All,

I'm new to preupgrade and playing with Fedora test builds (alpha, beta, 
TC, RC or otherwise), but hardly new to Fedora.  I'm hoping to do some 
early testing of F18 before it's released so I've built myself a F17 VM, 
fully updated it and have started the whole preupgrade process.  I think 
I've run into a bug or two, but ... as I said, I'm new to this.

I've got a local mirror of development/{18,rawhide} due to a mandated 
proxy and in general, the wish to reinstall fast many times, if needed. 
I'm attempting preupgrade via ssh since I did a minimal install of F17 and 
have no X server installed on the VM. 

Issue #1:
According to
, I should be able to select "Fedora 18 (Branched)".  Maybe that would 
work, maybe not.  For my first few attempts preupgrade just hung:

preupgrade-cli -d5 -v "Fedora 18 (Branched)"
Loaded plugins: blacklist, whiteout
No plugin match for: rpm-warm-cache
No plugin match for: remove-with-leaves
No plugin match for: auto-update-debuginfo
No plugin match for: refresh-packagekit
No plugin match for: presto
Not loading "blacklist" plugin, as it is disabled
Not loading "whiteout" plugin, as it is disabled
Config time: 0.007

A debug message here would have been helpful.  Admittedly, I did not 
trying higher debug levels -- I didn't see any ranges documented so it 
just seemed a time waste to blindly poke around.  Figuring that I was 
waiting for a network timeout, I interrupted it and did some more reading 
about how to use a local mirror from here:  I 
grabbed a copy of and 
didn't see any mention of "Fedora 18 (Branched)" as indicated on the Wiki. 
 I edited this copy to include my own  "Fedora 18 (Branched)" section that 
referenced my local mirror and then got much further.

Issue #2:
preupgrade got busy doing lots of stuff that looked reasonable, but then 
ended thusly:

Preparing system to boot into installer
DEBUG /sbin/grubby --title="Upgrade to Fedora 18 (Branched)" 
--add-kernel="/boot/upgrade/vmlinuz" --initrd="/boot/upgrade/initrd.img" 
--args="preupgrade repo=hd::/var/cache/yum/preupgrade 
sh: /sbin/grub: No such file or directory
/bin/echo: write error: Broken pipe
All finished. The upgrade will begin when you reboot.

Once the upgrade starts, a VNC server will open on port 5901.
Use it to monitor progress or fix problems that may arise.

Are those errors to be expected?

Issue #3:
I rebooted the VM, saw the new "Fedora 18 (Branched)" choice in grub's 
menu, but it was not the default and so the system booted back into F17. 
Since I have a console to the VM, I can "assist" it along, but I suspect 
that shouldn't be required, right?
John Florian
Machine Data Collections Team
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