6.3 reboot -d doesn't work
koitsu at FreeBSD.org
Wed Sep 17 16:25:41 UTC 2008
On Wed, Sep 17, 2008 at 07:36:46AM -0400, Stephen Clark wrote:
> I am trying to get a crash dump but am unable to with FreeBSD 6.3-RELEASE-p2
> dumpdir="/var/crash" # Directory where crash dumps are to be stored
> savecore_flags="" # Used if dumpdev is enabled above, and present.
> Z2873# sysctl -a |grep physmem
> hw.physmem: 259481600
> Swap: 1024M Total, 1024M Free
> Z2873# dumpon -v /dev/ad0s1b
> kernel dumps on /dev/ad0s1b
> reboot -d
> dumping 255M 2 chunks
> Then nothing - the system doesn't reboot and I have to hard reset it.
> When it comes back up there is no crash file in /var/crash
> from /var/log/messages:
> Sep 17 07:28:12 Z2873 kernel: ad0: 28615MB <IBM DJSA-230 JS6OAB0A> at
> ata0-master UDMA66
> Sep 17 07:28:12 Z2873 kernel: Trying to mount root from ufs:/dev/ad0s1a
> Sep 17 07:28:12 Z2873 savecore: no dumps found
> Is this broken?
It's a known problem. If when the machine reboots, you forcefully enter
single-user, you should be able to get the kernel dump using savecore.
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
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