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[Xen-devel] pvgrub --> kexec
Right now we have pvgrub and pygrub as loaders. Pygrub is more mature,
pvgrub is safer and more 'right' stuff to have.
But even the pvgrub is still have one real problem: we need to write our
own domU operating system with support of bunch of filesystems, hardly
to create interactivity, limited network capabilities (...yep, I can be
nice to have networking at boot time).
How about different approach? If we run linux with specially crafted
initrd, which will look around, see correct partition, mount it (in
domU!), get kernel, show menu, do networking and prepare the coffee for
admin. After that it will to kexec to found kernel with found initrd
with required argument.
No any dangerous dom0 manipulation with VDI, no more modules
synchronization problem (in case 'external' kernel loading). Easy to
create menus (just any ncurses application), ideal pre-boot
configuration environment for appliances (I ask user about settings and
boot real kernel with asked parameters).
The single problem: kexec is not supporting xen.
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