Re: grub-mkrescue and hard links

["Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>]

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Robert Millan wrote:
> On Thu, Nov 19, 2009 at 10:22:57PM +0000, Carles Pina i Estany wrote:
>   
>> Hello,
>>
>> grub-mkrescue is trying to execute cp -dpRl (l for link). If the origin
>> and destination directories are in different file systems this fails.
>>     
>
> One of the purposes of grub-mkrescue is to generate images that are bootable
> using GRUB.  These images might be complete CDs or DVDs, making a complete
> copy very undesireable.
>   
Why do you need copying at all? mkisofs supports taking source files
from multiple directories:
mkdir h1
mkdir h2
echo 4 > h1/hh
echo 5 > h1/hx
mkisofs -o h.iso h1 h2
isoinfo -l -i h.iso

Directory listing of /
d---------   0    0    0            2048 Nov 21 2009 [     23 02]  .
d---------   0    0    0            2048 Nov 21 2009 [     23 02]  ..
----------   0    0    0               2 Nov 21 2009 [     24 00]  HH.;1
----------   0    0    0               2 Nov 21 2009 [     25 00]  HX.;1

So you can just take grub files from temporary directory and overlay
from its original place

On a side note: when I did:
./grub-mkrescue -o grub.iso overlay
it added a directory named overlay to iso. E.g: I had a folder
overlay/boot instead of /boot on iso
> I think I'd rather remove the copiing stage altogether and operate on the
> original directory (this is not so strange, e.g. -boot-info-table in
> mkisofs also modifies original data and is widely used).
>
>   


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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