can't get a crash dump

[Roberto Nunnari]

another crash.. and in /var/log/messages I see:

Feb 17 12:20:50 jupiter savecore: no dumps found

Any hints, please?


Roberto Nunnari wrote:
> Hi.
> 
> A couple of days ago I upgrades a few ports on
> a 5.3 box and since then I'm often getting crashes.
> 
> -bash-2.05b# uname -a
> FreeBSD jupiter.noonlights.net 5.3-RELEASE-p5 FreeBSD 5.3-RELEASE-p5 #0: 
> Wed Feb 16 23:36:03 CET 2005 
> root at jupiter.noonlights.net:/usr/obj/usr/src/sys/JUPITER  i386
> 
> 
> I'd like to get a crash dump and so
> I added the following lines to /etc/rc.conf
> dumpdev="/dev/ad0s1b"
> dumpdir="/usr/crash"
> 
> -bash-2.05b# swapinfo
> Device          1K-blocks     Used    Avail Capacity
> /dev/ad0s1b        503360        0   503360     0%
> 
> 
> -bash-2.05b# ls -ld /usr/crash/
> drwx------  2 root  wheel  512 Feb 16 11:17 /usr/crash/
> 
> the machine only has 256MB RAM and the filesystem has over
> 5 GB free,
> but I'm not getting any dump! /usr/crash/ is always empty.
> 
> ..and the machine crashes quite often:
> -bash-2.05b# last|grep reboot
> reboot           ~                         Thu Feb 17 07:58
> reboot           ~                         Thu Feb 17 01:23
> reboot           ~                         Wed Feb 16 22:48
> reboot           ~                         Wed Feb 16 21:59
> reboot           ~                         Wed Feb 16 21:37
> reboot           ~                         Wed Feb 16 21:08
> reboot           ~                         Wed Feb 16 20:56
> reboot           ~                         Wed Feb 16 20:44
> reboot           ~                         Wed Feb 16 20:20
> reboot           ~                         Wed Feb 16 20:04
> reboot           ~                         Wed Feb 16 19:17
> reboot           ~                         Wed Feb 16 18:40
> reboot           ~                         Wed Feb 16 17:26
> reboot           ~                         Wed Feb 16 14:07
> reboot           ~                         Wed Feb 16 12:39
> reboot           ~                         Wed Feb 16 11:30
> reboot           ~                         Wed Feb 16 10:27
> reboot           ~                         Wed Feb 16 09:31
> reboot           ~                         Wed Feb 16 09:16
> reboot           ~                         Mon Feb 14 14:11
> reboot           ~                         Sun Feb 13 23:49
> reboot           ~                         Sun Feb 13 22:33
> reboot           ~                         Sun Feb 13 12:22
> 
> 
> What do I miss? Do I need some kernel option to get a crash
> dump?
> 
> Best regards.


-- 
               Roberto Nunnari -software engineer-
                mailto:roberto.nunnari at supsi.ch
  Scuola Universitaria Professionale della Svizzera Italiana
              Dipartimento Tecnologie Innovative
                   http://www.dti.supsi.ch
  SUPSI-DTI
  Via Cantonale                        tel: +41-91-6108561
  6928 Manno                 """       fax: +41-91-6108570
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