Workaround while installing xen kernels

[Michael Tautschnig]

> hiya
> 
> I'm installing XenSource VMs via FAI with Debian and Ubuntu. Since grub
> doesn't recognize paravirtualized kernels (when being run from a regular
> kernel such as 2.6.18-6-486) I scripted some actions to manually provide a
> correct configuration. (among other stuff)
> 
> There's a small hack I had to introduce in order to install the
> xen-kernels correctly.
> 
> -- hooks/instsoft.DEFAULT
> 
> #! /bin/bash
> 
> # fake a grub config
> # we rewrite it later on anyway
> (ifclass GRUB && ifclass VIRTXEN) && mkdir ${target}/boot/grub && touch
> ${target}/boot/grub/menu.lst
> 
> --
> 
> I don't like it and I want to get rid of it. But I'm not quite sure why I
> need it. The thing is without using this hook, the install scripts
> complains that the linux-image-2.6.xx-xen is to be installed, but grub is
> not configured. It does this several times (everytime apt-get install is
> called). Later on I rewrite /target/boot/grub/menu.lst to contain suitable
> xen kernels, but the final "apt-get install -f" in scripts/LAST/50-misc
> implicitely calls grub_update and overwrites it again. With this hook, the
> kernel-image installs fine the first time around and everything is peachy.
> 
> When installing "normal" kernels this hook isn't needed. FAI installs the
> requested kernels correctly.
> 
> 
> Does someone have an explanation what is happening? Some better way to do
> it? "Better" as in "more robust" or "less surprising". I really don't like
> faking a config file.
> 

No explanation and actually no idea, but rather the confirmation that I need to
do this as well (and I know of some others that they need it as well).

Best,
Michael

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