Upgrade to 3.8.8-100: now boot loops ! solved: grub2 bug.

[sean darcy]

On 05/02/2013 03:07 PM, Matthew Saltzman wrote:
> On Thu, 2013-05-02 at 13:17 -0400, sean darcy wrote:
>> On 04/30/2013 02:05 PM, Joe Zeff wrote:
>>> On 04/30/2013 10:14 AM, Reindl Harald wrote:
>>>> * make sure "installonly_limit" in "/etc/yum.conf" is high enough to not
>>>>     remove the 3.7.x
>>>
>>> If you really want to be safe:
>>>
>>> yum remove kernel
>>>
>>> will remove all installed kernels *except* for the one you're currently
>>> using.  (That is, yum won't allow you to leave yourself without a kernel
>>> for the next time you boot.)  You probably don't need to be this
>>> heavy-handed, but you never know when something like this might come in
>>> handy.
>>
>> I did that. Ran yum update. Same problem.
>>
>> But I figured it out. I've been planning to upgrade to F18 when I have
>> the courage. I've run fedup. But then when I upgrade to a new F17,
>> grub2, in it's infinite wisdom, places all the upgrade stuff from a
>> fedup boot to the command line of the new F17 kernel.
>>
>> Only way to fix is to go edit grub.cfg itself. And you need to keep
>> doing it with every kernel upgrade. Sigh.
>
> GRUB2 works more like LILO than like old GRUB, in that there is a
> configuration file to edit and an installation procedure to get the boot
> process to use the updated configuration.
>
> The file to edit is /etc/default/grub.  The installation command is
>
>          grub2-mkconfig -o /boot/grub2/grub.cfg
>
> That command runs some scripts that create /boot/grub2/grub.cfg,
> which--as you've discovered--you should never edit.
>
> /etc/default/grub is a set of shell variable definitions.  The one you
> want to edit is GRUB_CMDLINE_LINUX, which contains a template for the
> kernel command line arguments.  Once this is fixed, the kernel update
> process should work correctly.
>
> If have trouble figuring out what to fix, post the contents of
> your /etc/default/grub here.
>
> If you are annoyed by the "missing font file" error message when grub2
> starts, add the line
>
>          LANG=C
>
> to the top of that file.
>
>
>>
>> sean
>>
>>
>

You miss the point. /etc/default/grub was never changed, and CMDLINE is 
the same as always:
GRUB_CMDLINE_LINUX="rd.md=0 rd.lvm=0 rd.dm=0 SYSFONT=latarcyrheb-sun16 
KEYTABLE=us rd.luks=0 LANG=en_US.UTF-8"

Nonetheless, grub2 is putting all the upgrade stuff in the command line. 
That's the error.

sean