Date: Thu, 1 Jul 1999 00:40:01 -0700 (PDT) From: Ruslan Ermilov <ru@ucb.crimea.ua> To: freebsd-bugs@FreeBSD.org Subject: Re: misc/12468: reboot causes dumps core after a 2.2.X to 3.2 upgrade Message-ID: <199907010740.AAA35518@freefall.freebsd.org>
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The following reply was made to PR misc/12468; it has been noted by GNATS.
From: Ruslan Ermilov <ru@ucb.crimea.ua>
To: joe@pavilion.net
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: misc/12468: reboot causes dumps core after a 2.2.X to 3.2 upgrade
Date: Thu, 1 Jul 1999 10:27:25 +0300
On Wed, Jun 30, 1999 at 09:46:26PM +0000, joe@tao.org.uk wrote:
>
> >Description:
>
> During the transition from a 2.2.X running operating
> system to 3.2 using 'cvsup' and 'make world', eventually
> one has to reboot the box onto the new kernel. The
> traditional way of doing this is to use a 'reboot' command.
> Unfortunately it seems that the reboot functionality doesn't
> survive during a upgrade and instead the operator is rewarded
> with a 'dumped core' instead. This isn't usually a problem
> if the server is in the physical locality of the operator, but
> is a 'right royal pain in the arse' if the server is located
> on a remote desert island ;)
>
> >How-To-Repeat:
>
> Start with a 2.2.X machine.
> Cvsup the source tree to 3.2-RELEASE, or 3.2-STABLE.
> Make upgrade (or aout-to-elf-build, install, move, etc)
> Use mergemaster to rebuild the /etc/ config, etc.
> Rebuild the kernel and install.
> Disklabel -B primarydrive - to install new boot blocks for elf kernel.
> Reboot --- bus error! Network is down. Machine sits happily
> in single user mode.
As the first step of the install phase, ``upgrade'' saves the copies
of /bin/sh and /sbin/reboot into /usr/obj, and displays the following
message:
+-------------------------------------------------------------+
| Saving a copy of programs required to shut the system down. |
+-------------------------------------------------------------+
After it has finished populating your system with the new ELF stuff,
``upgrade'' will automatically install new boot blocks onto your root
hard drive (you were asked for), build and install new ELF kernel,
set the default obj format to ``ELF'' and ask you to reboot the system:
+-------------------------------------------------------+
| Your system has now been fully updated to elf! |
| |
| It's now time to reboot from your new ELF kernel. |
| You can type Ctrl-C to abort this (at your own risk) |
^^^^^^^^^^^^^^^^
| or press return to reboot the system. |
+-------------------------------------------------------+
I assume that you pressed Ctrl-C at this point, so this is what
"your own risk" mean -- you didn't knew how to reboot your system
correctly. The correct way is to execute /usr/obj/reboot.
--
Ruslan Ermilov Sysadmin and DBA of the
ru@ucb.crimea.ua United Commercial Bank,
ru@FreeBSD.org FreeBSD committer,
+380.652.247.647 Simferopol, Ukraine
http://www.FreeBSD.org The Power To Serve
http://www.oracle.com Enabling The Information Age
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