Re: appropriate code for a GRUB-specific option

[Christoph Plattner <christoph.plattner@alcatel.at>]

You are right with your consideration. This could be a bad idea.
On the other hand, we violate an other idea !
Only the 'menu.lst'-file should configure which OS, which root paths,
etc. The bootptab or the dhcp configuration only should define
which machine which ip-address and which 'menu.lst' file the machine
gets.

The root path of the linux is then specified in 'menu.lst':

	kernel /tftpboot/machine1/boot/vmlinuz root=/dev/nfs 
		nfsroot=/tftpboot/machine1/root

In this way. 'nfsroot' can also include the server like
	kernel ---"---  nfsroot=199.1.1.20:/tftpboot/machine1/root

Because if I want to boot different versions of Linux or Unix-like-OSs
then it is not a good idea to define the root path via the 'rp=' !!

This is my opinion.
With friendly regards

	Christoph Plattner

-----------------------------------------------------------------------
private:	christoph.plattner@dot.at
company:	christoph.plattner@alcatel.at

Chip Salzenberg wrote:
> 
> According to Christoph Plattner:
> > We should consider, that a server admin has to define bootp (or dhcp)
> > to allow diskless booting of grub.To define the boot file the
> > 'bf=' option is used. So we should overthink, if we should not use
> > another tag, which is normaly used and reserved, but which is not
> > used in context of GRUB. For example the root-path 'rp='. Why can
> > GRUB not have the root path for itself to find his own 'menu.lst' ?
> 
> I'm afraid that would break my current setup.  Just because grub is
> supported by a given DHCP server doesn't mean that other clients are
> not also supported.  In our setup, grub boots a Linux kernel which is
> configured to use DHCP to auto-configure its IP address and mount its
> NFS root ....  and the NFS root is specified with rp= .
> --
> Chip Salzenberg              - a.k.a. -              <chip@valinux.com>
> "I wanted to play hopscotch with the impenetrable mystery of existence,
>     but he stepped in a wormhole and had to go in early."  // MST3K
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