[Pacemaker] benefits of cman?

[Matthew O'Connor]

Hi again!  I have a hopefully-quick question.

As I've been experimenting with upgrade paths, and also from reading the
Pacemaker Explained document, I understand that cman is either becoming
required (per the Ubuntu upgrade path to 12.04) or is considered
essential (per Pacemaker Explained).  Are there any detriments to using
cman?  If I want to add additional nodes to the cluster, will I need to
bring down the whole cluster or restart services on existing nodes to
apply the new cluster.conf?

Thanks!!

-- 

Sincerely,
  Matthew O'Connor

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