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Date:      Thu, 11 Jul 2002 19:59:22 +0400 (MSD)
From:      Dmitry Morozovsky <marck@rinet.ru>
To:        Paulo Fragoso <paulo@nlink.com.br>
Cc:        Kevin Oberman <oberman@es.net>, Alexandr Kovalenko <never@nevermind.kiev.ua>, Gavin Atkinson <gavin@ury.york.ac.uk>, Michiel Boland <boland@alexander.diva.nl>, <freebsd-stable@FreeBSD.ORG>
Subject:   Re: 4.6-RELEASE -> 4.5-RELENG 
Message-ID:  <20020711195426.N40021-100000@woozle.rinet.ru>
In-Reply-To: <20020710154619.M93085-100000@mirage.nlink.com.br>

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On Wed, 10 Jul 2002, Paulo Fragoso wrote:

[snip]

PF> We have a doubt, if we have kern.securelevel=-1 and we are doing a
PF> security upgrade (for example: that server is using 4.6-RELEASE and its
PF> tag is tag=RELENG_4_6), are there any reason to switch to single-user
PF> mode?
PF>
PF> We are upgrading remotely some servers without switch to sigle-user, but
PF> in all cases are security upgrade only and all works fine.

YMMV ;-) In maybe most cases it would work, but in others don't. I
remembered at least two situations where single-user was really necessary
(elf branding changes between 4.0 and 4.1, and some other, don't quite
remember, where kernel and userland become incompatible).

As someone already mentioned, serial console would be of great help for
remote upgrades. And for remote troubleshooting, too. ;-) I would also
recommend you getting "server-like" MBs with ability to redirect BIOS
output to serial port -- but it's kind of being "perfect in everything"
;-)

Sincerely,
D.Marck                                   [DM5020, DM268-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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