Re: Installing FreeBSD 8 as domU

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Mon, May 30, 2011 at 07:03:33PM +0100, Hugo Silva wrote:
> [...]
> Related to the above, I can reliably crash the dom0 [Manuel, I cc'd you
> because I suspect it's a side effect of the patch that allows one to
> boot FreeBSD HVM+PV] after starting/stopping FreeBSD several times.
> Meant to write about this the other day, but got sidetracked.
> 
> One sees:
> $ gzcat /var/log/messages.* | grep ref
> May 29 12:01:39 minskytron /netbsd: xbdback backend/vbd/3/832: can't map
> grant ref: 0/-1
> May 29 12:01:39 minskytron /netbsd: xbdback backend/vbd/3/832: can't map
> grant ref: 0/-1
> 
> It seems (if this info helps troubleshooting) that the last vm boot
> before the dom0 spontaneously reboot will hang (like it would without
> the patch). I would then destroy the VM forcibly, start it again, and
> the moment I did that, the dom0 reboots.
> 
> I will be happy to crash my dom0 a few more times to help fix it!

Do you have text console for the dom0 ? Do you have ddb.onpanic=1 ?
Do you see any trap or panic message from the dom0 before it reboots ?

Next step would be to setup a serial console, so you can catch Xen messages
as well.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--