On Thu, 2 Mar 2017, Wang, Zhiye wrote: > Dear all, > > Where can I find document about how to extend ceph? > > The only doc I can see is here: > http://docs.ceph.com/docs/master/architecture/#extending-ceph > > And some examples in https://github.com/ceph/ceph/tree/master/src/cls > > Where can I get document for those APIs? And are those APIs kept stable > from release to release? The example classes are the best documentation currently. The APIs are quite stable, although in principle they could change. The class plugins need to be compiled against a specific build of ceph anyway, so you would discover any future change at build time. The storage calls (reads and writes) roughly correspond to the RADOS operations defined in include/rados.h (they map to the operations interpreted by do_osd_ops() in PrimaryLogPG.cc), and those rados operations maintain compatibility across many Ceph releases as they are normally originating from clients connecting to the system that could be running other versions. Hope that helps! sage -- 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
