Hi, as far as I unterstood RH is going to do all infrastructure in the cman layer and user pacemaker only for resource management. Whith this setup fencing also will be a job of the fenced of the cman package.
This design has its advantages: If descisions are taked on a low level, all parts of the cluster have the chance to know about theses descisions. BUT: If pacemaker needs to fence a node, it has no possibility to so so any more. Imagine a resource will not stop and pacemaker would like to fence that node to go on. How would that situation be handled with fencing in cman? Is there any way pacemaker can tell cman about it's wish to fence an other nore? The only solution I can think of is to delegate the fencing in cman to pacemaker. So both layers are able to fence. But this cannot be a good solution, since we have to setup fencing on two places. Thanks for fruitful discussion. Mit freundlichen Grüßen, Michael Schwartzkopff -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64, +49 (162) 165 0044 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
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