[ag-automation] Antwort: Re: Booting fails with 2.6.21.6-rt21

[M.Voss at wzl.rwth-aachen.de]

ls -l /dev/disk/by-id

here for the working kernel:

insgesamt 0
lrwxrwxrwx 1 root root  9 22. Nov 09:45 ata-Maxtor_33073H3_L3HC4GBC -> 
../../sda
lrwxrwxrwx 1 root root 10 22. Nov 09:45 ata-Maxtor_33073H3_L3HC4GBC-part1 
-> ../../sda1
lrwxrwxrwx 1 root root 10 22. Nov 09:45 ata-Maxtor_33073H3_L3HC4GBC-part2 
-> ../../sda2
lrwxrwxrwx 1 root root 10 22. Nov 09:45 ata-Maxtor_33073H3_L3HC4GBC-part3 
-> ../../sda3
lrwxrwxrwx 1 root root  9 22. Nov 09:45 edd-int13_dev80 -> ../../sda
lrwxrwxrwx 1 root root 10 22. Nov 09:45 edd-int13_dev80-part1 -> 
../../sda1
lrwxrwxrwx 1 root root 10 22. Nov 09:45 edd-int13_dev80-part2 -> 
../../sda2
lrwxrwxrwx 1 root root 10 22. Nov 09:45 edd-int13_dev80-part3 -> 
../../sda3
lrwxrwxrwx 1 root root  9 22. Nov 09:45 scsi-SATA_Maxtor_33073H3_L3HC4GBC 
-> ../../sda
lrwxrwxrwx 1 root root 10 22. Nov 09:45 
scsi-SATA_Maxtor_33073H3_L3HC4GBC-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 22. Nov 09:45 
scsi-SATA_Maxtor_33073H3_L3HC4GBC-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 22. Nov 09:45 
scsi-SATA_Maxtor_33073H3_L3HC4GBC-part3 -> ../../sda3

on the not-booting rt-patched-kernel I there ist no "disk" and no "sda" 
entry in the "/dev" directory. So, there seems to be the problem... is 
there a way to fix it? 

Best regards,

Markus Voss

--------------------------------------------------------------------- 
Dipl.-Inform. Markus Voss

Werkzeugmaschinenlabor - RWTH Aachen 
Lehrstuhl fuer Werkzeugmaschinen 
Steinbachstr. 53 B
D-52074 Aachen 

Tel:  ++49 241 80 28235
Fax: ++49 241 80 22293 

M.Voss at wzl.rwth-aachen.de
http://www.wzl.rwth-aachen.de 
-------------------------------------------------------------------- 



Thomas Gleixner <tglx at linutronix.de> 
22.11.2007 10:18

An
M.Voss at wzl.rwth-aachen.de
Kopie
"ag-automation at www.osadl.org" <ag-automation at www.osadl.org>, 
ag-automation-bounces at www.osadl.org
Thema
Re: [ag-automation] Booting fails with 2.6.21.6-rt21 






On Thu, 22 Nov 2007, M.Voss at wzl.rwth-aachen.de wrote:
> I have a running openSuSE 10.3 with original Kernel 2.6.22.12.
> 
> I compiled a new kernel (2.6.21.6) patched with the RT-Preempt patch 
> according to the Installation How-To an the OSADL-website. Everything 
> worked fine. Even a correct entry within the GRUB bootmanager has been 
> generated. 
> 
> But when I now try to boot the new kernel it seems to have problems with 

> the hard disk. I get the following message:
> 
> "Waiting for device 
> /dev/disk/by-id/scsi_SATA_Maxtor_33073H3_L3HC4GBC-part2 to appear 
> ...................................
>  could not find scsi_SATA_Maxtor_33073H3_L3HC4GBC-part2"
> 
> After that message I get a question I can answer Y/N... whatever I type, 

> the booting stops and I end up in a shell.

Hmm. Looks like the symbolic link is missing or incorrect.

Can you please provide the output of: ls -l /dev/disk/by-id/ 
for a working and a non working kernel ?

Thanks,

                 tglx