Bug 741063

Created attachment 526985 [details]
Dracut failure and kernel panic screenshot

I get a similar problem attempting to preupgrade a virtual machine from F15 to F16B.

Same issue here, same error.

System: 
FC15 x86_64 installed from scratch, fully updated as of today.
i920 cpu
2 RTL8111/8168B nics
7 sata disks in raid1 and raid10 configuration

Same problem here.

F14->F16B preupgrade.

F14 i686 on HP Mini 110.

dont know if it will help but:

[root@mini77 upgrade]# pwd
/boot/upgrade
[root@mini77 upgrade]# file initrd.img
initrd.img: xz compressed data
[root@mini77 upgrade]# unxz -t initrd.img 
unxz: initrd.img: Compressed data is corrupt

I have the same problem. I suspect a dodgy mirror (and a bug in the code to verify this file) since I could only get preupgrade to complete by running it multiple times after it failing lots of times due to bad checksums.

It looks like there really is no checksum check for the initrd (slightly worrying!):

Trying other mirror.
http://fedora.uib.no/fedora/linux/development/16/x86_64/os/images/pxeboot/vmlinuz: [Errno 14] HTTP Error 404 - Not Found : http://fedora.uib.no/fedora/linux/development/16/x86_64/os/images/pxeboot/vmlinuz
Trying other mirror.
http://mirrors.ircam.fr/pub/fedora/linux/development/16/x86_64/os/images/pxeboot/vmlinuz: [Errno 14] HTTP Error 404 - Not Found : http://mirrors.ircam.fr/pub/fedora/linux/development/16/x86_64/os/images/pxeboot/vmlinuz
Trying other mirror.
vmlinuz                                                  | 4.2 MB     00:04     
initrd.img                                               | 128 MB     01:12     
Checking for new repos for mirrors

# cd /boot/upgrade/
# unxz -t initrd.img 
unxz: initrd.img: Compressed data is corrupt

(In reply to comment #6)
> It looks like there really is no checksum check for the initrd (slightly
> worrying!):
> 
> Trying other mirror.
> http://fedora.uib.no/fedora/linux/development/16/x86_64/os/images/pxeboot/vmlinuz:
> [Errno 14] HTTP Error 404 - Not Found :
> http://fedora.uib.no/fedora/linux/development/16/x86_64/os/images/pxeboot/vmlinuz
> Trying other mirror.
> http://mirrors.ircam.fr/pub/fedora/linux/development/16/x86_64/os/images/pxeboot/vmlinuz:
> [Errno 14] HTTP Error 404 - Not Found :
> http://mirrors.ircam.fr/pub/fedora/linux/development/16/x86_64/os/images/pxeboot/vmlinuz
> Trying other mirror.
> vmlinuz                                                  | 4.2 MB     00:04     
> initrd.img                                               | 128 MB     01:12     
> Checking for new repos for mirrors
> 
> # cd /boot/upgrade/
> # unxz -t initrd.img 
> unxz: initrd.img: Compressed data is corrupt

This is most likely several initramfs images concatenated together... the kernel can cope with this.

Fair enough. How can I troubleshoot this?

It doesn't fix the underlying problem, but I used this workaround:

wget -O /boot/upgrade/vmlinuz "http://www.mirrorservice.org/sites/download.fedora.redhat.com/pub/fedora/linux/development/16/x86_64/os/images/pxeboot/vmlinuz"
wget -O /boot/upgrade/initrd.img "http://www.mirrorservice.org/sites/download.fedora.redhat.com/pub/fedora/linux/development/16/x86_64/os/images/pxeboot/initrd.img"
restorecon -Rv /boot/upgrade

As of today, seems than preupgrade is able to start anaconda, but fails with an exception.

Reported here:

https://bugzilla.redhat.com/show_bug.cgi?id=749862

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