Re: udev & kernel names

[Greg KH <greg@kroah.com>]

On Thu, Apr 28, 2005 at 09:01:29AM +1000, Martin Schwenke wrote:
> >>>>> "Greg" = Greg KH <greg@kroah.com> writes:
> 
>     >> Is there a better way to go about getting these useful log
>     >> messages?
> 
>     Greg> Modify your syslog program to do it.
> 
> /me dons asbestos suit...  :-)
> 
> ... and we've had the following conversation before, but let me try to
> put it more clearly right here.
> 
> Kernel names are evil.  They look like device names, but they are not
> device names.  They are kernel names.  Device names are created in
> userspace and the kernel has no knowledge of them.  The confusion
> occurs because they look the same (or similar)...

I know, we've been over this before.  A very simple solution to this is
just never have the kernel print the name it is internally using :)

> A nicer solution would be to log different canonical labels for
> devices, and pass these to udev.  For SCSI devices this could be
> something like "scsi/1:2:3:4" or even sd/major,minor - it doesn't
> matter too much.

dev_printk() solves this issue nicely.  Care to create a patch for all
places that you object to where the kernel prints out a kernel name?

thanks,

greg k-h



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