Re: for ppc, include all modules in the core image

[Paulo Flabiano Smorigo/Brazil/IBM]

Quoting Vladimir 'φ-coder/phcoder' Serbinenko <address@hidden>:

> On 16.10.2012 12:28, Paulo Flabiano Smorigo/Brazil/IBM wrote:
>
> > Hi all!
> >
> > This patch implements the solution suggested by Gustavo Luiz Duarte
> > <address@hidden>:
> >
> > Adding more modules to be built-in to the grub core ELF is easy. It is a
> > parameter passed by grub2-install to grub2-mkimage. However, there is a
> > downside
> > on adding many modules to the core ELF: they are fully initialized in
> > the grub's
> > first stage. It means you could hit a bug on a module you don't need and
> > end up
> > with a non-bootable system.
> >
> > Another downside is that you wouldn't get updates for these built-in
> > modules, as
> > updating the grub2 package only updates the modules residing in /boot
> > and not
> > the grub core ELF in the PReP partition.
> >
> > A proper solution would be to add to grub the ability of having built-in
> > *inactive* modules which would be loaded and initialized only on demand
> > (i.e.
> > explicitly calling the insmod command).
>
> This is what memdisk does (i.a.). Why do you need anything else?
>
> > _______________________________________________
> > Grub-devel mailing list
> > address@hidden
> > https://lists.gnu.org/mailman/listinfo/grub-devel
>
>
>
> --
> Regards
> Vladimir 'φ-coder/phcoder' Serbinenko

Hi phcoder,

Thanks for the reply. I studied memdisk and tried to use grub-mkstandalone
but the idea used in this patch is different. It's like a plan B just in
case /boot isn't found. It gives the "grub rescue" a new level of recovery,
increasing the chances to fix the system. This extra modules is stored in a
different area and will *only* be used in this case.

Otherwise, the normal modules, inside /boot, will be used normally and If
there is an update or if grub.cfg changes, the new files will be used.

Best regards,
--
Paulo Flabiano Smorigo
Software Engineer
Linux Technology Center - IBM Systems & Technology Group