[Linux-cluster] Fencing deadlock under Cluster Suite v4, how to solve?

Lon Hohberger lhh at redhat.com
Fri Sep 29 14:05:08 UTC 2006

On Fri, 2006-09-29 at 10:15 -0300, Celso K. Webber wrote:
> Hello David,
> Do you know (or someone else) where can I find documentation about the
> new qdisk mechanism?

I'll assist you -- most of the documentation is in the manual pages:

  man qdisk

The only "difficult" part is getting the heuristics right.  In your
case, you'd want heuristics which monitor network connectivity, so that
when you pull the cables, the node (which is still alive, despite the
fact that it has lost network connectivity) will remove itself from the
cluster, and the other node will fence it.

The example in the manual page for pinging a router should be of some
use, but you may very well have a better method of determining network

Oh, and to note a question which isn't actually mentioned in the manual
page -- the qdisk partition should be around 10mb. :)

-- Lon

More information about the Linux-cluster mailing list