I don't think we expose this as an API as such. If you wanted to do it from within the ceph source you'd use OSDMap::object_locator_to_pg and OSDMap::pg_to_acting_osds (see how Client::get_file_extent_osds does it).
We do expose a special case of this in the libcephfs API (ceph_get_file_extent_osds), where one can query the OSDs for a file extent (but not arbitrary object names). I guess that is kind of a precedent for adding it to librados, although it does kind of break the abstraction a bit. John On Tue, Dec 2, 2014 at 5:54 AM, 申凌轩 <[email protected]> wrote: > Hi everyone, > In my application I need to know which osd contain the object. > And I know how to get that information through shell command: ceph osd map > [objectname] -p [poolname] > But I CAN'T find the exactly API (C, C ++) to do this job. > Does anyone have an idea ? > > Many THX > > > > _______________________________________________ > ceph-users mailing list > [email protected] > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
