Open Stack

Hello, wanted to measure the relative interest in two related efforts I
could work on.  In general, I'm considering bringing over much of the
capability of xCAT's deployment facility over to Ironic, but wanted to
highlight a couple to start with.

-An openstack tailored proxydhcp server.  This would mean the boot control
aspect would be cleanly split from network identity control.  This would
allow the bootstrap program to be more adaptive to UEFI and BIOS style
boot.  Given the limitations of python, I'd probably implement this as a
moderately standalone C program (e.g. the ability to get at IP_PKTINFO
afaict isn't cleanly possible until python 3.3).  I can only be confident
with x86, ARM I think would work with some different logic, POWER would not
work.
-If a system does a PXE request, then send down a second stage bootloader.
Then that bootloader would download third stage bootloader
(pxelinux.0/elilo/grub2/efibootmgfw.efi/pxeboot.n12/esxboot.c32/esxboot.efi)
 and would provide/download kernel/initrd/wim/multboot modules over https
or http.  This would be iPXE based (perhaps the xNBA branch that I
established for xCAT).  A patched esxboot would also be relevant.  On EFI
Linux, elilo could work with patch (as it does for xCAT), but I might see
about grub2 depending on whether it will do something with Simple
filesystem or not.  The impetus for not elilo would be figuring out the
most straightforward path to target-side initrd concatenation.  I presume
there is a desire to ultimately not have many copies of the same initrd
data, but I plan to also take advantage of initrd injection for other
features.  I can do server side injection into initrds, but it would mean
unique initrds per target.
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