[Linux-cluster] lock_dlm kernel panics

[Bas van der Vlies]

On Mar 17, 2006, at 11:40 PM, David Teigland wrote:

> On Fri, Mar 17, 2006 at 03:38:59PM -0600, Paul Tader wrote:
>> Mar 17 11:38:02 nodename kernel: d0 unlock fe20017a no id
>
> GFS is trying to unlock a lock that doesn't exist which causes the  
> panic.
> We know this happens if cman shuts down the dlm while it's in use  
> (cman
> does this if it's lost connection with the cluster.)  There's some new
> output in the RHEL4U3 dlm that should tell us if that's in fact what's
> happening or if there's some other cause that we need to uncover.
>
> So, you should look on all nodes for any cman messages in
> /var/log/messages or the console.  And when you're using the latest
> version look for the new dlm message "WARNING:  
> dlm_emergency_shutdown".

Dave,

  We had similar problems on our 4 node GFS cluster:
    * STABLE from cvs
    *  2.6.16-rc5-sara3

I have attached the kern.log's. 1 cman and 3 dlm kernel panics.

Regards
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--
Bas van der Vlies
basv at sara.nl