Re: [Xen-API] pypxeboot (or similar) under XCP 1.6 - xenpvnetboot

[James Bulpin <James.Bulpin@xxxxxxxxxxxxx>]

Hi Alexandre,

Good spot. XenServer 6.x and XCP 1.6 all use Xen 4.1 so won't have this 
feature. XenServer will be moving to Xen 4.3 soon. xenpvnetboot is a drop-in 
replacement for pygrub so in theory when we get Xen 4.3 in XS you'll be able to 
use the PV-bootloader and PV-bootloader-args VM params to use it as documented 
on the wiki page but that'll probably require a couple of xapi hacks to make it 
permit the alternative bootloader and ensure the PV-kernel etc. args are all 
passed through to it properly.

FWIW you might even be able to manually drop the xenpvnetboot script onto a 
XenServer or XCP system based on Xen 4.1 but that'll still need the above xapi 
hacks.

Regards,
James

> -----Original Message-----
> From: xen-api-bounces@xxxxxxxxxxxxx [mailto:xen-api-bounces@xxxxxxxxxxxxx]
> On Behalf Of Alexandre Kouznetsov
> Sent: 10 July 2013 19:12
> To: xen-api@xxxxxxxxxxxxx
> Subject: Re: [Xen-API] pypxeboot (or similar) under XCP 1.6 - xenpvnetboot
> 
> Hello.
> 
> By causality I found a reference to "xenpvnetboot", which seems to solve
> my problem and is supported since a year ago, in Xen 4.2.
> 
> http://wiki.xen.org/wiki/Xenpvnetboot_:_A_network_bootloader_for_Xen_PV_gu
> est
> 
> It's mentioned on http://www.linux.org.ru/news/opensource/8240913
> (russian), but not on
> http://blog.xen.org/index.php/2012/09/17/xen-4-2-0-released/ .
> 
> Debian package search engiene says it's included in xen-utils-4.2 under
> Sid:
> http://packages.debian.org/search?suite=sid&arch=any&searchon=contents&key
> words=Xenpvnetboot
> 
> By chance, does it works somehow under XCP or XenServer? I found no
> reference documentation yet.
> 
> Greetings
> 
> El 04/07/13 14:02, Alexandre Kouznetsov escribió:
> > Hello.
> >
> > Is there a reasonable clean way to get a PV domain to boot using
> > existing PXE infrastructure instead of a regular VBD? Would be great to
> > have it working "off the shelf", but if not, after a minimally invasive
> > procedure.
> >
> > All the reference I have found about the subject suggests using
> > pypxegrub, but only the usage with a regular Xen is described.
> >
> > "xe vm-param-list" tells me about "PV-bootloader", usually set to
> > "pygrub" on PV guests. Is it a keyword, or the actual name of executable
> > file to run and may be anything within PATH? In that case, maybe I can
> > manually install pypxeboot to my XCP or XenServer host and archive my
> goal.
> >
> > Have anybody done that already?
> > Is there a known cleaner way?
> >
> > Thank you.
> >
> 
> 
> --
> Alexandre Kouznetsov
> Systems Officer
> Ondore, S.A. de C.V.
> Tel. +52(55) 5559-0090
> E-mail alk@xxxxxxxxxx
> 
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