Re: [Xen-users] SuSE 9.3 XenU using the Xen 3 RHEL4.1 RPM

["Ulrich Windl" <ulrich.windl@xxxxxxxxxxxxxxxxxxxx>]

On 12 Dec 2006 at 9:07, Eamonn Kenny wrote:

> Hi Ulrich,
> 
> Thanks your suggestion gets rid of the annoying references to not being 
> able to find the modules. However it still doesn't allow the machine to 
> come up in runlevel 3 which is what I want. There are also some errors 
> at the start about not being about to create /dev/mapper/control, 
> although it seems to exist already with the correct permissions.

That device file appears once the module is loaded. So either a sequencing 
problem, or a timing problem. Maybe add a sleep when the mapper is loaded.

Part of my system's startup says:
Activating swap-devices in /etc/fstab...
doneStarting udevd done
Activating device mapper...
done
Loading required kernel modules
doneStarting MD Raid done
Waiting for udev to settle...
Scanning for LVM volume groups...
  Reading all physical volumes.  This may take a while...
  Found volume group "system" using metadata type lvm2
Activating LVM volume groups...
  13 logical volume(s) in volume group "system" now active
done


> 
> The errors look as follows:
> 
> Activating device mapper...
> FATAL: Module dm_mod not found.

That's bad! In my SLES10 system I have:
INITRD_MODULES="amd74xx mptsas processor thermal fan reiserfs dm_mod edd"

See "dm_mod" is explicitly mentioned.

> device-mapper kernel module not loaded: can't create /dev/mapper/control.
>                                                                      failed

Also:
lrwxrwxrwx 1 root root 16     Nov 23 09:58 /dev/mapper/control -> 
../device-mapper
crw-rw---- 1 root root 10, 63 Nov 23 09:58 /dev/device-mapper


> showconsole: Warning: the ioctl TIOCGDEV is not known by the kernel
> 
> I couldn't find any easy solution.

Dig and you will find something ;-)

Regards,
Ulrich


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