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Old 10-31-2010, 03:59 PM   #1
nonshatter
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SuSE fails to boot from qLogic Fibre channel card - "No root device found"


Hi all,

We have a SuSE/SLES 9 server that boots from a fibre channel card, using volumes from a NetApp filer.

We previously had the server booting from the LUNs on the filer, but after some tinkering around with the fibre channel BIOS, we have the situation where the LUNS seem to be mounted, the OS boots, starts to initialise everything but then stalls, saying:

"Searching for /dev/sdb2/ ....
#long list of device nodes (tty's,pty's, etc)..........
No Root Device found, exiting to /bin/sh
$"

We have tried loads of combinations of settings in the BIOS and fibre channel BIOS without any success or any idea what may have caused the error.

Can anyone help or at least shed some light on why this may have happened?
 
Old 10-31-2010, 04:52 PM   #2
impert
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It would help if you posted the output of:
ls /boot
fdisk -l
cat /etc/fstab
and the relevant bits or the whole of /boot/grub.conf, boot/grub/menu.lst, or /boot/grub/cfg. (I'm assuming you use grub - if not, what do you use as a boot loader?)
And,
Quote:
"Searching for /dev/sdb2/ ....
Is that the exact message? I'm intrigued by the / after sdb2.

Last edited by impert; 10-31-2010 at 04:55 PM.
 
Old 10-31-2010, 04:59 PM   #3
nonshatter
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Well it was an approximation of the error message! I won't be in the lab until tomorrow afternoon so I will have to provide a more detailed breakdown then. Yes GRUB is used as the boot loader. I'm no linux expert, but when the boot hangs, it won't let me issue any commands such as fdisk/mount etc. So how can I issue these commands before/after the stall??
Cheers
 
Old 11-01-2010, 04:19 AM   #4
nonshatter
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**Edit...

We have managed to solve the issue. It wasn't to do with SUSE at all. It was all down to a configuration error on the Filer. We had configured the portnames in reverse order for adapter 0c and 0d. The lowest Portname needed to be assigned to 0c and the higher assigned to 0d.

Thanks for your help anyway. Regards

Last edited by nonshatter; 11-01-2010 at 07:16 AM.
 
Old 11-01-2010, 07:38 AM   #5
impert
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Glad to hear it's solved
 
  


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