Re: [PATCH] use UUID to map system devices to grub devices

[Felix Zielcke]

Am Dienstag, den 28.07.2009, 20:12 +0200 schrieb Robert Millan:
> On Sun, Jul 26, 2009 at 04:05:31PM +0200, Felix Zielcke wrote:
> > As requested by Robert on IRC, this is a split from my dmraid patch.
> > On dmraid devices HDIO_GETGEO returns 0 for all fields, so the current
> > way of grub_util_biosdisk_get_grub_dev just can't work.
> > So I use blkid to get the UUID of the device and then a new nested
> > function to find out the grub device like search does.
> > 
> > I think this is with intent from the kernel that it just returns 0's.
> > Maybe it just can't distinguish between a device mapper setup which goes
> > over multiple partitions or harddisks of different size not from one
> > which goes only over complete harddisks with same size like in dmraid
> > Hm but even if, I think it wouldn't help in case of RAID != 1. Sector
> > count could be > then last sector of one disk or not?
> 
> I keep thinking this is an overkill solution.  We should to discuss more about
> what's the problem we need to fix, and only ressort to this if we have no
> other choice.
> 

The problem is how do we map a device file to a grub device.
Especially BSD partitions which only have numbers under Linux?
I don't know how the devices are called under BSD.

-- 
Felix Zielcke
Proud Debian Maintainer