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xen-ppc-devel
Re: [XenPPC] [PATCH] Option to override firmware bootargs
On Mon, Sep 18, 2006 at 09:19:29AM -0500, Hollis Blanchard wrote:
> On Sun, 2006-09-17 at 02:40 -0400, Amos Waterland wrote:
> > I recently got a few hours on a Maple development board. I wanted to
> > boot with an nfsroot, but I didn't want to risk changing the bootargs
> > saved in the PIBS firmware. This patch lets Xen choose to override the
> > bootargs supplied by the firmware if the user specifies `bootargs=builtin'.
>
> We already have too many ways of passing boot parameters. I'll be taking
> a look at GRUB in the near future, so hopefully most of them will become
> obsolete.
This is not a very good response. Perhaps I did not properly explain
what the problem is.
The patch solves a real problem that using GRUB does not. I need to
boot Xen on a large number of machines (50 or more), and whenever you
reach that scale you find it necessary to reduce the state of each actor
in the system.
I want to reduce the state saved on each individual machine. I.e, if
the last person who happened to work on a particular blade happened to
put a boot argument in the firmware that breaks me, I want to be able to
override him. I need to boot 50 or more machines at once and I do not
control the machines, I only get access to them periodically.
Please explain how using GRUB is going to help. Keep in mind that I
might not be able to force the machine owners to install GRUB, and many
of the machines don't even have a hard drive.
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