[Linux-cluster] ordering scores and kinds

[Ferenc Wagner]

Hi,

http://clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/s-resource-ordering.html
says that optional ordering is achieved by setting the "kind" attribute
to "Optional".  However, the next section
http://clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/_advisory_ordering.html
says that advisory ordering is achieved by setting the "score" attribute
to 0.  Is there any difference between an optional and an advisory
ordering constraint?  How do nonzero score values influence cluster
behaviour, if at all?  Or is the kind attribute intended to replace all
score settings on ordering constraints?
-- 
Thanks,
Feri.