Re: [PATCH] Split of raid scan code

[Robert Millan <rmh@aybabtu.com>]

On Sat, Aug 16, 2008 at 05:07:00PM +0800, Bean wrote:
> Hi,
> 
> This new patch seperates raid5 and raid6 recover code from raid.c, and
> place them in module raid5rec.mod and raid6rec.mod. The recover code
> is only needed when some of the disk are missing or corrupted, which
> is not common. But raid.c is installed to mbr, so size is important.
> If there is enough room in mbr for the extra module, they can use
> --modules option in grub-install to add these modules.

I find this scary in the sense that users need to know about these modules
to get the benefit of recovery, and even then, they also need to know they
are affected by this problem when they install GRUB (since otherwise they
won't be able to bootstrap).

Is it possible to detect whether recover code will be needed when grub-install
is run, and then either add the extra modules or abort with an error?

-- 
Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."