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List:       freebsd-stable
Subject:    Re: Cannot obtain kernel dump in /var/crash
From:       Alexander Shikoff <minotaur () crete ! org ! ua>
Date:       2007-02-23 8:09:54
Message-ID: 20070223080954.GA93664 () crete ! org ! ua
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On Thu, Feb 22, 2007 at 08:28:25AM -0800, Jeremy Chadwick wrote:
> On Thu, Feb 22, 2007 at 04:13:33PM +0200, Alexander Shikoff wrote:
> > /etc/rc.d/dumpon creates symbolic link /dev/dumpdev. It's present in 
> > my /dev directory. I think a problem is somewhere deeply, probably
> > with savecore(8). When a panic occurs I see in console process of
> > dumping (size of RAM, number of pages, dump device etc.) and it's
> > completely normal.
> 
> Anything shown on the actual console?  There's some error conditions
> which emit messages via syslog() only (see lines ~278-286 of
> src/sbin/savecore/savecore.c).
> 
> Also, any chance of output from savecore -f -vv?  There's some extra
> debugging info which might come in handy (lines ~288 of
> src/sbin/savecore/savecore.c).

Checking for core dump on /dev/ad2s1b...
----> savecore -f -vv /var/crash /dev/ad2s1b
unable to open bounds file, using 0
checking for kernel dump on device /dev/ad2s1b
mediasize = 1073741824
sectorsize = 512
magic mismatch on last dump header on /dev/ad2s1b
savecore: unable to force dump - bad magic
savecore: no dumps found
Feb 23 10:04:05  savecore: unable to force dump - bad magic

-- 
Kind Regards,	Alexander Shikoff
minotaur@crete.org.ua
Mob.: +380 67 946 31 49
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