Re: Freezing Dom0

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

On Mon, Aug 08, 2011 at 07:31:08AM +0200, Torsten Harenberg wrote:
> Dear all,
> 
> sorry this is maybe a trivial question.
> 
> I run around 10 servers running NetBSD 5 (RELEASE) as Dom0 and running CentOS 
> and NetBSD DomUs on top of that. This runs very very stable since month.
> 
> I have one Dom0 machine which freezes every about 2 weeks without anything 
> written to the kernel log. The machine ran VMware before, so I would nearly 
> exclude hardware related problems (of course one can never be sure).
> 
> I upgraded this machine to -current already (just in case this is something 
> which has already been fixed).
> 
> The only difference to the other machines is: it runs only one CentOS DomU 
> and this machine uses much more network resources (it has a Lustre file 
> system mounted which is heavily used).
> 
> I already increased the NMBCLUSTERS on the Dom0, as the kernel complained 
> ones.
> 
> So what would be your advice to track down the reason for the freeze? Freeze 
> here means that the machine is completely unresponsive, the console is locked 
> and the network is not even ping-able.


try to enter ddb and look with ps and trace what the system could
be doing.

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