I currently have 5 nodes in my slony 1.2 cluster: A, B, C, D, and E. Nodes A 
and B take turns being the origin. Node C will always be a subscriber but is 
also a provider to nodes D and E, which have subscribed to their set with 
forward=no. (All other nodes have subscribed with forward=yes.) So:

(A or B) provides to C provides to (D and E)

I have two intertwined questions about this configuration. The first is, how do 
I reshape when C dies? I assume I should just tell D and E to receive from A or 
B.....

...but (and this is the second question) D and E have subscribed with 
forward=no, and I've heard that you don't want something with forward=no 
talking to a node which might be become the origin. So should I just subscribe 
D and E with forward=yes, even though they'll never forward their data on?


As a third question, I'm becoming a bit concerned about the number of nodes in 
my cluster, especially because I want to add a third node that might become the 
origin and also a third node that feeds from C in the common case. Do D and E 
need paths between their current provider only, or do they need to be in 
constant talk with all of their potential providers?
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