On 11/11/13 14:18, Teske, Devin wrote:
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On Nov 11, 2013, at 11:46 AM, Michael Dexter wrote:
Hello all,
I have been experimenting with various BSD and GNU/Linux boot media
under bhyve and noticed that we may want to accommodate the "LiveCD"
mode of the installer, which in turn requires the correct console.
Currently, one is prompted for VT100 for installation but this does not
appear to work/stick for LiveCD mode.
Can anyone verify this?
While I developed this patch...
http://druidbsd.cvs.sf.net/viewvc/druidbsd/bsdinstall_zfs/usr.sbin%3A%3Absdinstall%3A%3Ascripts%3A%3Aconfig.patch?revision=1.10&view=markup
Reasons exist to search for a better solution, see here:
http://lists.freebsd.org/pipermail/freebsd-current/2013-November/046148.html
(and messages that follow it)
Is modifying init(8) still the way to go? What modification do we want to make?
I'll do the work if we can come to consensus.
Or should we touch up the patch in some way to address the original concerns?
I think modifying init is the way to go -- it keeps the install system
from interfering with the installed one, as well as fixing this kind of
issue with moved hard drives or PXE booting or what have you. If we can
provide a guarantee that any system that displays text has a working
console (unless explicitly configured not to), useability is improved.
I would propose one of the following (and volunteer to write the code):
Option A
------------
1. init checks if there is an entry in /etc/ttys for the terminal[s]
corresponding to the value[s] in kern.console
2. If an entry for each console terminal exists in /etc/ttys, enable it
3. If not, invent one with a terminal type of "ansi"
The one issue here is that someone may want to force a particular entry
to off and still have it be the kernel console. This is tricky. We could
invent a new "status" field that is not "on" or "off" ("auto", maybe, or
"ifconsole"?). Which brings us to:
Option B
-----------
Very similar to Option A, except only provide an automatic console using
(2) and (3) if the "console" terminal is marked "on". This would
increase the magic attached to "console" in /etc/ttys, but fix the
problem with (A).
It's possible another approach would work as well. Does anyone have
thoughts on this?
-Nathan
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