Date: Wed, 9 Sep 2009 21:44:31 +0100 From: "N.J. Mann" <njm@njm.me.uk> To: Michael Sperber <sperber@deinprogramm.de> Cc: Mikael Bak <mikael@t-online.hu>, freebsd-stable@FreeBSD.org, Robert Watson <rwatson@FreeBSD.org>, Miroslav Lachman <000.fbsd@quip.cz> Subject: Re: Upgrade FreeBSD 7.1 to 7.2 Message-ID: <20090909204431.GB88622@titania.njm.me.uk> In-Reply-To: <y9lws488fu9.fsf@c052021.wlan.net.ed.ac.uk> References: <4A8EAE86.2000108@t-online.hu> <4A8ECB9C.2020909@quip.cz> <alpine.BSF.2.00.0908221229480.61512@fledge.watson.org> <y9lws488fu9.fsf@c052021.wlan.net.ed.ac.uk>
next in thread | previous in thread | raw e-mail | index | archive | help
In message <y9lws488fu9.fsf@c052021.wlan.net.ed.ac.uk>,
Michael Sperber (sperber@deinprogramm.de) wrote:
>
> Robert Watson <rwatson@FreeBSD.org> writes:
>
> > FWIW, the main problem I ran into with my 8.0 upgrade is that 8.0 uses
> > the uart(4) driver for serial ports, and sio(4), 7.2's default, has
> > been removed. They require mutually exclusive lines in device.hints
> > and different /etc/ttys lines. If you rely on a serial console, I
> > would recommend first switching 7.2 to using uart, pausing for a bit,
> > and then switching forward to 8 so that you separate the risks
> > associated with changing console drivers from those associated with
> > sliding a major kernel version.
>
> Could you briefly elaborate on how that's done with 7.x? I.e. is
> changing device.hints and /etc/ttys enough (what changes?), or do I need
> to recompile the kernel? (I'm a bit confused because both uart and sio
> seem to be in GENERIC, but I haven't been able to active uart through
> device.hints. I couldn't find anything on freebsd.org or the internets,
> either.) A few hints would be much appreciated!
Robert's comment prompted me to try this on my home server which runs
7-STABLE, but which I will probably upgrade to 8-STABLE in a few months
time. What I did was:
1. Replace 'device sio' with 'device uart' in the kernel configuration
file.
2. In /etc/ttys change all ttydX to ttyuX, where X was 0 to 3 in my
case.
3. In /boot/device.hints change all hint.sio.X.Y to hint.uart.X.Y
I then rebooted with my fingers crossed since said machine is headless.
I need not have worried since it worked first time.
If anyone thinks I forgot something please _do_ speak up.
HTH
Cheers,
Nick.
--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20090909204431.GB88622>