[CFT] bsdinstall and zfsboot enhancements

[Teske, Devin]

On Nov 11, 2013, at 12:56 PM, Nathan Whitehorn wrote:

> On 11/11/13 14:52, Teske, Devin wrote:
>> On Nov 11, 2013, at 12:44 PM, Peter Grehan wrote:
>> 
>>> Hi Devin,
>>> 
>>>> Question:
>>>> Does bhyve set kern.console irrespective of loader.conf values?
>>> The kernel sets it based on what it determines the console to be. Bhyve influences that by requesting a serial console. This is no different than booting on a headless machine with a serial console.
>>> 
>> Well, for a headless meachine, I would set console=comconsole,vidconsole
>> in loader.conf(5), then our Forth code slurps it in via loader.4th + support.4th
>> routines...
>> 
>> When boot is executed, I know I can see "kenv console", but hadn't realized
>> that there were/are a host of others that are slurped into the kernel for later
>> (very purposeful) fetching.
>> 
>> So when you say that bhyve requests a serial console... I assume now it's
>> setting variables... but via raw Forth? C code? loader.conf(5)? I've seen my
>> menu come up under bhyve, and I noticed that it only has a 5-second count-
>> down instead of the usual 9 -- but I'm curious how you're exporting the variables.
> 
> I think you've misunderstood. kern.console isn't set by loader. It reflects the state of the kernel, which decides what to do autonomously based on a number of driver and platform-dependent things including, but not limited to, kenv (loader variables, for instance).

I was thinking it, but didn't express it properly... yes... kern.console is influenced
by loader variables.

"slurped" is definitely not the technical explanation I should be striving for ;D (that
is, if I'm trying to be clear).
-- 
Devin

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