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xen-users
[Xen-users] Re: kexec into xen
Hi Mark,
thanks for your information.
Mark Williamson wrote:
I have a question: Is it possible to kexec into a xen vmm from a non-xen
kernel? In my vision it would be interesting to boot from a generic
linux installer, then analyze the hardware and boot into a suitable xen
kernel, that loads a dom0 linux kernel.
Yes, that should be doable. Tim Deegan wrote a patch that allowed kexec to
boot multiboot images like Xen. I believe it's been in the upstream kexec
tools for quite a while. You specify Xen as the kernel, followed by XenLinux
as a module and (optionally) an initrd (as another module).
That sounds very interesting.
Do you know anybody interested in this?
What sort of applications were you thinking of? Selecting between 32-bit, PAE
and 64-bit perhaps?
I am trying to build a cheap xen cluster. And I thought of booting
various computers using a generic bootable image (.e.g live-cd) and then
prepare the network environment and boot into a xen vmm form the
existing system. This allows us to deploy updates on the shared storage
(e.g. nfs) without adding the need to update the cd-roms.
-- Jakob
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