[Linux-cluster] Shutdown/startup

[Paul Tader]

So how does one properly shutdown and/or start up a GFS 6.1 cluster. 
Documentation on the procedures are surprisingly sparse.  For example, 
what I've experienced during shutdown are messages like:

CMAN: sendmsg failed: -101
CMAN: we are leaving the cluster.

from the node shutting down while the the other nodes report that this 
node needs to be fenced off.  What?!  Fenced during a controlled 
shutdown?  Is that correct?  During a complete cluster shutdown, of 
course quorum, at some point is lost, freezing the nodes that have not 
completely shutdown forcing a hard reset on those nodes.  I'm probably 
missing something trivial here, but this doesn't seem right.

Start up also suffers from the "quorum" problem, but it seems to 
recovery once enough nodes are up.


Paul
-- 
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Paul Tader  <ptader at fnal.gov> Computing Div/CSS Dept
Fermi National Accelerator Lab; PO Box 500 MS 369 Batavia, IL 60510-0500