On Tue, Jan 31, 2017 at 7:42 AM, Ukko <[email protected]> wrote:
> Hi, > > Two quickies: > > 1) How does Ceph handle unique object IDs without any > central information about the object names? > That's where CRUSH comes in. It maps an object name to a unique placement group ID based on the available placement groups. Some of my favorite explanations of data placement comes from the core Ceph developers. [1] [2] 2) How CRUSH is used in case of splitting an object in > stripes? > The splitting/striping of data actually occurs at a layer above CRUSH. The clients handle that and calculate object placement with CRUSH based on unique object names. > Thanks! > > > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > [1] https://youtu.be/05spXfLKKVU?t=9m14s [2] https://youtu.be/lG6eeUNw9iI?t=18m49s -- Brian Andrus Cloud Systems Engineer DreamHost, LLC
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