[Linux-cluster] gfs and fencing

[Jeff Dinisco]

I'm trying to implement gfs on FC4.  I'm following the redhat docs.  I
do not have the gui.  

I'm confused about the fencing piece.  It implies that fencing is
required to allow a service to run on only a single node in a cluster
which ensures data integrity.  Makes sense if your data resides on ext3
or an equivalent.  But it seems to defeat the purpose of GFS.  

In fact, I really only want to utilize gfs and don't want my app to be a
service or eligible for failover.  I basically want 3 nodes to serve
data from the same filesystem.  If an app/service/node crashes or fails
it's fine, I'll still have 2 serving the same data via the same apps.  

So my questions are, how should I configure fencing?  Are there aspects
of the cluster I should/can leave out of the mix since I really only
want gfs functionality, not ha functionality.  Thanks

Jeff
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