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On Tue, 2003-04-15 at 15:21, Ram Pai wrote: > On Tue, 15 Apr 2003, Greg Freemyer wrote: > > > All, > > > ..snip... > > > > Ram, possibly you could say if that is appropriate or not. (i.e. Does > > EVMS know when nodes are being added to a cluster?) > > It depends on the cluster manager that EVMS interacts with. Currently EVMS > interacts with Linux-HA cluster manager. Linux-HA cluster manager does > not allow dynamic addition of nodes to the cluster. All the nodes that > can possibly be part of the cluster are predefined in a configuration > file. So the maximum number of nodes that can be in a cluster is well > known. EVMS as it currently stands assumes a static cluster. > > So to answer your question, EVMS does not know when nodes are being > added to a cluster. However EVMS comes to know when a eligible nodes > join or leave the cluster, through the Linux-HA's membership services. > > > Now the question is: does OpenGFS assume a static cluster or a dynamic > cluster? It should be a goal for OpenGFS to work on both. Even static clusters can have updates (config files changed and committed) that change the membership. A dynamic cluster does that in a different way. In both cases, OpenGFS needs to learn about it. This abstraction is the motivation for an Event Service like the ones defined for OCF and (soon) SAF. -- Joe DiMartino <joe@osdl.org> ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Opengfs-devel mailing list Opengfs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/opengfs-devel