maas-devel team mailing list archive

[Julian Edwards <julian.edwards@xxxxxxxxxxxxx>]

On Tuesday 07 August 2012 09:07:21 Robie Basak wrote:
> Following a discussion with Gavin and Raphaël the other day, here's what
> I think should work for fallback for when a node reboots.
> 
> Cobbler in Oneiric (I have that to hand) uses "LOCALBOOT -1". However,
> this will only work on modern BIOSes. On ARM, we want this, but
> "LOCALBOOT 0" instead, which I have asked vendors to implement to mean a
> local boot explicitly rather than requesting a BIOS fallback. Actually
> I'll make a note to clarify this. So what I want on all architectures
> (except for the Intel exception below) is:
> 
> 	DEFAULT local
> 	TIMEOUT 20
> 	SAY Booting from local disk in 20 seconds.
> 
> 	LABEL local
> 		SAY Booting locally...
> 		LOCALBOOT 0
> 
> However, this will only work on modern BIOSes. On ARM, we want this, but
> "LOCALBOOT 0" instead, which I have asked vendors to implement to mean a
> local boot explicitly rather than requesting a BIOS fallback. Actually
> I'll make a note to clarify this.
> 
> Daviey says that pxelinux's implementation of this isn't reliable on
> Intel and is BIOS-dependent, so exceptionally on Intel we want:
> 
> 	DEFAULT local
> 	TIMEOUT 20
> 	SAY Booting from local disk in 20 seconds.
> 
> 	LABEL local
> 		SAY Booting locally...
> 		COM32 chain.c32
> 		APPEND hd0
> 
> Daviey: is "hd0" what you want here?
> 
> Robie

Just so I am sure about what you are saying - LOCALBOOT is unreliable on 
Intel?

Cheers.