Hi, CRUSH placement algorithm works really nice with replication. However, with erasure code, my cluster has some issues which require making changes that I cannot specify with CRUSH maps. Sometimes, depending on the type of data, I would like to place them on different OSDs but in the same pool. I realize that to disable the CRUSH placement algorithm and replacing it with my own custom algorithm, such as random placement algo or any other, I have to make changes in the source code. I want to ask if there is an easy way to do this without going into every code file and looking where the mapping from objects to PG is done and changing that. Is there some configuration option which disables crush and points to my own placement algo file for doing custom placement. Let me know about the most neat way to go about it. Appreciate any help I can get. Regards, Shayan Saeed Research Assistant, Systems Research Lab University of Illinois Urbana-Champaign -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
