Re: Problems in kernel migration from 2.4 to 2.6+

[Márcio Oliveira <moliveira@rhla.com>]

Randy.Dunlap wrote:

> On Fri, 14 Oct 2005, Steven Rostedt wrote:
>
>  
>
> > On Fri, 14 Oct 2005, Márcio Oliveira wrote:
> >
> >    
> >
> > > Hi there!
> > >
> > >  I am migrating my linux laptop from a kernel 2.4.27-2  to a 2.6.12.6
> > > one. Since I compiled the 2.6.12.6 kernel and booted my laptop, I am
> > > receiving the following message when chose the 2.6.12.6 entry in the
> > > grub menu:
> > >
> > > mount: mount point dev does not exist
> > > pivot_root: No such file or directory
> > > /sbin/init: 432: cannot open dev/console: No such file
> > > Kernel panic - not syncing: Attempted to kill init!
> > >
> > >   But when I chose the 2.4.27 entry in the grub meno, my laptop boots ok!
> > >
> > >   My laptop is running Debian Sarge 3.1a,  kernel 2.4.27-2 (that it is
> > > booting ok) and kernel 2.4.6.12.6 (kernel.org kernel).  I compiled the
> > > 2.6.12.6 kernel with all needed modules (sata disk, ext3 ... including
> > > devfs support), maked a initrd image with the necessary modules to mount
> > > the / partition (sata modules, file system modules...) and changed the
> > > disks names in the /etc/fstab from hda to sda (as it is recognized at
> > > 2.6.12.6 kernel bootup process). The laptop model is IBM Thinkpad T43.
> > >      
> > That hda to sda looks funny.  I didn't know the T43 has a SCSI (which I'm
> > pretty sure it doesn't).
> >    
>
> It may have SATA, which would show up as sda.
>  

yeah, my laptop has SATA disks and it is recognized as  a sda disk...

> Do you have all of the necessary SATA drivers and sd.o (sd.ko
> if modules) present?
>  

I think I do.  The SATA controller is recognized at the boot time and 
the driver loaded is ata_piix, the boot process messages also shows the 
partiotion table.

All modules dependences are in the initrd file (scsi_mod, libata, 
sd_mod) and the initrd file has the /dev/console device. The laptop 
kernel doesn't have the "sd.ko" module, I think in my case the module sd 
is the sd_mod, right?

>  
>
> > > Any ideia? Anybody knows why it is happen?
> > >
> > >      
> > Are you sure the initrd was correctly made. That pivot_root seems to
> > suggest that it wasn't.  You're using Debian. When I went from 2.4 to 2.6
> > I just used aptitude (or apt-get) to get the 2.6 kernel first, and let the
> > package manager make all the necessary changes for me.  I also usually
> > don't use an initrd and just compile in the drivers for my ide and
> > filesystems.
> >    

I got the sarge official kernel package with all dependences (via 
apt-get), installed it and the new kernel has the same problem that the 
manualy compiled one has!

Any ideias?



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