------------
- [x] ensure that `SERVER_X` is defined
-- [ ] change any features `DEPRECATED` in release X-3 are now marked `RETIRED`.
+- [x] change any features `DEPRECATED` in release X-3 are now marked `RETIRED`.
- [ ] look for features that (1) were present in X-2 and (2) have no
client dependency and mark them `DEPRECATED` as of X.
DEFINE_CEPH_FEATURE(28, 2, SERVER_MIMIC)
DEFINE_CEPH_FEATURE(29, 1, MDSENC) // 4.7
DEFINE_CEPH_FEATURE(30, 1, OSDHASHPSPOOL) // 3.9
-DEFINE_CEPH_FEATURE_DEPRECATED(31, 1, MON_SINGLE_PAXOS, NAUTILUS)
+DEFINE_CEPH_FEATURE_RETIRED(31, 1, MON_SINGLE_PAXOS, NAUTILUS, PACIFIC)
+// available for R
DEFINE_CEPH_FEATURE_RETIRED(32, 1, OSD_SNAPMAPPER, JEWEL, LUMINOUS)
DEFINE_CEPH_FEATURE(32, 3, STRETCH_MODE)
DEFINE_CEPH_FEATURE_RETIRED(33, 1, MON_SCRUB, JEWEL, LUMINOUS)
CEPH_FEATURE_OSDHASHPSPOOL | \
CEPH_FEATURE_NEW_OSDOP_ENCODING | \
CEPH_FEATURE_NEW_OSDOPREPLY_ENCODING | \
- DEPRECATED_CEPH_FEATURE_MON_SINGLE_PAXOS | \
CEPH_FEATURE_OSD_CACHEPOOL | \
CEPH_FEATURE_CRUSH_V2 | \
CEPH_FEATURE_EXPORT_PEER | \