Clarification on cluster quorum

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Hi,

I'm looking for an option to add an arbiter node to the gluster
cluster, but the leads I've been following seem to lead to
inconclusive results.

The scenario is, a 2 node replicated cluster. What I want to do is
introduce a fake host/arbiter node which would set the cluster to a 3
node meaning, we can meet the conditions of allow over 50% to write
(ie. 2 can write, 1 can not).

elyograg from IRC gave me a few links [1], [2]
But these appear to be over a year old, and still under review.

Gluster 3.2 volume options (I'm running 3.4, but there doesn't seem to
be an updated page) [3]
seem to state the that the cluster quorum is identified by active
peers. This also backs up the statement in [2] in regards to a patch
for active volumes rather than cluster peers.

Has anyone gone down this path, or could they confirm any of these
leads? (ie. does a host w/o any volumes get considered as a peer
within the cluster)

Thanks,
Andrew

[1] https://bugzilla.redhat.com/show_bug.cgi?id=914804
[2] http://review.gluster.org/#/c/4363/
[3] http://gluster.org/community/documentation/index.php/Gluster_3.2:_Setting_Volume_Options#cluster.quorum-type
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