PR: https://github.com/ceph/ceph/pull/22630
osd/OSDMap.cc: remove pg_upmap/pg_upmap_items too if osd is gone

PR: https://github.com/ceph/ceph/pull/23406
osd/OSDMap: fix apply upmap segfault

PR: https://github.com/ceph/ceph/pull/23734
osd/OSDMap: don't mapping all pgs each time in calc_pg_upmaps

PR: https://github.com/ceph/ceph/pull/23740
luminous: core: mgr/balancer: deepcopy best plan - otherwise we get latest

PR: https://github.com/ceph/ceph/pull/25196
mon: automatically throw out any stale upmap items




commit: https://github.com/ceph/ceph/commit/550dcd53bb6db4f6b9d3b941f101332ac17a0168
mgr/DaemonServer: prevent merge if either pg is remapped|upmap