Specify different config file for i386-xen_pvh grub2 image?

[Shaun Reitan]

I'm transitioning from using grub2 for a PV guest to grub2 for a PVH 
guest due to the fact that the PV version cannot load lz4 compressed 
kernels.  I've been using the following command to build the image.

./grub-mkstandalone --grub-mkimage=./grub-mkimage -o grub2-pvh -O 
i386-xen_pvh -d grub-core/ "/boot/grub/grub.cfg=./grub.cfg"

In my grub.cfg i have the following
search -s root -f /boot/grub/grub.cfg

So I think I'm finally realizing that my problem in my grub.cfg is that 
the search is going to create a loop and will find and load the grub.cfg 
on the memdisk? Is that correct?

The issue I'm having is that some distros have their grub.cfg in 
/boot/grub/grub.cfg. How can i tell my grub image to use/load a 
different configfile?  For example i'd like to rename my grub.cfg to 
maybe bootstrap.cfg so that the search line above finds the grub.cfg on 
the disk rather than the one on the memdisk.

Hopefully that makes sense. My grub.cfg will actually have alot more 
logic than what I have above.  It will be searching for grub.cfg in 
multiple paths until it finds it's first match and then use that.

For example probably something like...

for grubcfg in /boot/grub/grub.cfg /boot/grub2/grub.cfg 
/boot/grub/grub2.cfg /grub2/grub2.cfg /etc/grub2.cfg /etc/grub.cfg ; do
   if search -s -f $grubcfg ; then
      echo "Reading (${root}$grubcfg"
      configfile $grubcfg
   fi
done

--
Shaun Reitan
NDCHost.com