CentOS - Sep 2006 - Kernel-2.6.9-42.0.2EL fails to boot after upgrade to CentOS 4.4

---On Sat, 2006-09-02 at 07:42 -0500, Gerald Waugh wrote:

We have a problem with upgrade to 4.4
When we run 'yum update' everything appears to be OK
But, if we reboot the server with the new kernel, 
we get "kernel panic" when the new kernel attempts to load.

The CentOS splash screen shows briefly, but not long enough to select
the old kernel

Gerald

(let's try it like this ... johnny :)
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On Sat, 2006-09-02 at 10:50 -0500, Johnny Hughes wrote:
> ---On Sat, 2006-09-02 at 07:42 -0500, Gerald Waugh wrote:
> 
> We have a problem with upgrade to 4.4
> When we run 'yum update' everything appears to be OK
> But, if we reboot the server with the new kernel, 
> we get "kernel panic" when the new kernel attempts to load.
> 
> The CentOS splash screen shows briefly, but not long enough to select
> the old kernel

Hmmm ...

You should get a screen that has a kernel name and is blue, at that
screen, you should be able to press any key and then select a kernel
before the kernel actually starts booting.

Does that work?

The other issue sounds like maybe you have a custom built kernel driver
that you need to build for your new kernel before you boot (maybe a
SCSI/RAID driver)?
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Johnny Hughes schrieb:
> ---On Sat, 2006-09-02 at 07:42 -0500, Gerald Waugh wrote:
> 
> We have a problem with upgrade to 4.4
> When we run 'yum update' everything appears to be OK
> But, if we reboot the server with the new kernel, 
> we get "kernel panic" when the new kernel attempts to load.
> 
> The CentOS splash screen shows briefly, but not long enough to select
> the old kernel
> 
> Gerald
> 
> (let's try it like this ... johnny :)
> 
What kernel is that?The one from centos-plus?

Chris

On Sat, 2006-09-02 at 10:54, Johnny Hughes wrote:
> > 
> > We have a problem with upgrade to 4.4
> > When we run 'yum update' everything appears to be OK
> > But, if we reboot the server with the new kernel, 
> > we get "kernel panic" when the new kernel attempts to load.
> > 
> > The CentOS splash screen shows briefly, but not long enough to select
> > the old kernel
> 
> 
> Hmmm ...
> 
> You should get a screen that has a kernel name and is blue, at that
> screen, you should be able to press any key and then select a kernel
> before the kernel actually starts booting.
> 
> Does that work?
If that doesn't work, boot the install CD with 'linux rescue'
at the boot prompt. It should auto-detect your installed
system, mount it, and suggest that you 
chroot /mnt/sysinstall
do that, edit /etc/grub.conf to default to your old
kernel, then exit twice to reboot.

-- 
  Les Mikesell
   lesmikesell at gmail.com

> You should get a screen that has a kernel name and is blue, 
> at that screen, you should be able to press any key and then 
> select a kernel before the kernel actually starts booting.
> 
> Does that work?
The screen comes up, and both the 34 and 42 kernels are displayed, but
only for an instant.
Is there a way to make this screen delay longer?
 
> The other issue sounds like maybe you have a custom built 
> kernel driver that you need to build for your new kernel 
> before you boot (maybe a SCSI/RAID driver)?
No, using the standard kernel that was in 4.3, and it works.

Gerald

Johnny Hughes wrote:
> On Sat, 2006-09-02 at 10:50 -0500, Johnny Hughes wrote:
>   
>> ---On Sat, 2006-09-02 at 07:42 -0500, Gerald Waugh wrote:
>>
>> We have a problem with upgrade to 4.4
>> When we run 'yum update' everything appears to be OK
>> But, if we reboot the server with the new kernel, 
>> we get "kernel panic" when the new kernel attempts to load.
>>
>> The CentOS splash screen shows briefly, but not long enough to select
>> the old kernel
>>     
>
>
> Hmmm ...
>
> You should get a screen that has a kernel name and is blue, at that
> screen, you should be able to press any key and then select a kernel
> before the kernel actually starts booting.
>
> Does that work?
>
> The other issue sounds like maybe you have a custom built kernel driver
> that you need to build for your new kernel before you boot (maybe a
> SCSI/RAID driver)?
>   
Since I'm still happily running CentOS 4.3, I should probably keep my 
thoughts
to myself, but that immediate kernel panic sure is a reminder of 
attempting to boot
an i686 kernel with an i586 processor.  I'd try to duplicate the 
reported symptom
but my AMD K6-2 box has become an "organ transplant" donor strictly
because
of kernel requirements.