Cannot obtain kernel dump in /var/crash
koitsu at FreeBSD.org
Thu Feb 22 13:22:26 UTC 2007
On Thu, Feb 22, 2007 at 01:56:44PM +0200, Alexander Shikoff wrote:
> I've discovered reproducable kernel panic but I cannot obtain a dump.
> I have in rc.conf:
> ... and in kernel configuration:
> options KDB
> options DDB
> options KDB_UNATTENDED
> makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
> My RAM size is 768 MB and swap size is 1024 MB.
> When rebooting after a crash I see in console:
> Feb 22 13:40:41 crete savecore: unable to force dump - bad magic
> Feb 22 13:40:41 crete savecore: no dumps found
> Any suggestions? Thanks.
Is /dev/ad2s1b the correct location? Possibly you meant ad0s1b
or some other adX device? (Common mistake.)
Do you have a swap device defined, particularly in /etc/fstab?o
What does swapinfo say?
Does the same happen if you say dumpdev="auto" or if you remove
the -f flag from savecore_flags?
It may be worth peeking through /etc/rc.d/dumpon and imitating
some of the commands there to see if you can reproduce it.
| Jeremy Chadwick jdc at parodius.com |
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| UNIX Systems Administrator Mountain View, CA, USA |
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