[Linux-ha-dev] A curious question about the Order constr aint

[fancitron]

Hi, all. I'm just starting to explore the rich features of Heartbeat 2.0.x. I read from the changelog in heartbeat.spec that (wish I interpret it correctly): if there exists an Order constraint such that resource R1 "before" resource R2 (action is implied to be "start", according to the cib dtd), then, if I try to stop R1 while R1 and R2 are both running, R2 will be automatically stopped before R1 is stopped, although its target_role is still "started". Did I interpret it correctly?

If the above is true, is it also true that, when I try to start R2 when R1 and R2 are both NOT running, R1 shall be automatically started before R2 is started?

Finally the curious question is, if I define an Order constraint that R1 start before R1, how will pengine handle it when I try to start/stop R1? Aha this question is really non-realistic, but just for theoretical completeness, I mean ;-) A possible generalization might be R1 before R2, R2 before R1...

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