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Re: NetBSD-HEAD amd64 crash
On Mon, 30 Dec 2013, Thomas Mueller wrote:
Subject: Re: NetBSD-HEAD amd64 refuses to build
Why does the Subject talk about a build problem when the body talks
about a crash? I changed the Subject in thei reply.
My suggestion would be not to bother with the serial console, but
instead take a picture of the screen [...]
I don't have a digital camera or smartphone.
Besides, a digital camera would lose all the messages that raced
past on the screen.
You still haven't told us what messages are still visible on
the screen. Those are much more important than what's already
scrolled out of view. Lack of a camera should not prevent you
from writing the messages down, and typing them into an email
I tried reboot 0x100 but couldn't find where the dump was. I
ran ls -rtl in /media/zip0/var and subdirectories but couldn't
find any messages from crash time.
The crash dump should be saved to whichever disk partition has
been marked as a dump device, typically via swapctl(8). The dump
partition is usually the same as the swap partition, which is
usually the "b" partition on your boot disk (e.g. /dev/wd0b).
During the next boot after a crash, savecore(8) looks for a crash
dump in the relevant raw disk partition, and copies it to a file
in the /var/crash directory. If the boot does not get far enough,
then the dump will not end up in the /var/crash directory. In
theory, a method could be devised for using some other OS to copy
the crash dump from the raw dump partition to a file, but I don't
know of any suitable tool that already exists.
--apb (Alan Barrett)
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