diff --git a/src/osd/PGBackend.h b/src/osd/PGBackend.h
index 66bb890af01..b50f0d8c78c 100644
--- a/src/osd/PGBackend.h
+++ b/src/osd/PGBackend.h
@@ -132,6 +132,8 @@ typedef ceph::shared_ptr<const OSDMap> OSDMapRef;
        OpRequestRef op = OpRequestRef()
        ) = 0;
      virtual epoch_t get_epoch() const = 0;
+     virtual epoch_t get_interval_start_epoch() const = 0;
+     virtual epoch_t get_last_peering_reset_epoch() const = 0;
 
      virtual const set<pg_shard_t> &get_actingbackfill_shards() const = 0;
      virtual const set<pg_shard_t> &get_acting_shards() const = 0;
diff --git a/src/osd/PrimaryLogPG.h b/src/osd/PrimaryLogPG.h
index 1ebde000c5b..3d870582a7f 100644
--- a/src/osd/PrimaryLogPG.h
+++ b/src/osd/PrimaryLogPG.h
@@ -289,6 +289,12 @@ public:
   epoch_t get_epoch() const override {
     return get_osdmap()->get_epoch();
   }
+  epoch_t get_interval_start_epoch() const override {
+    return info.history.same_interval_since;
+  }
+  epoch_t get_last_peering_reset_epoch() const override {
+    return get_last_peering_reset();
+  }
   const set<pg_shard_t> &get_actingbackfill_shards() const override {
     return actingbackfill;
   }