Thanks Mike. Is there any documentation for that? Thanks, Guang On Oct 9, 2013, at 9:58 PM, Mike Lowe wrote: > You can add PGs, the process is called splitting. I don't think PG merging, the reduction in the number of PGs, is ready yet. > > On Oct 8, 2013, at 11:58 PM, Guang <yguang11@xxxxxxxxx> wrote: > >> Hi ceph-users, >> Ceph recommends the PGs number of a pool is (100 * OSDs) / Replicas, per my understanding, the number of PGs for a pool should be fixed even we scale out / in the cluster by adding / removing OSDs, does that mean if we double the OSD numbers, the PG number for a pool is not optimal any more and there is no chance to correct it? >> >> >> Thanks, >> Guang >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com