diff --git a/src/osd/osd_types.cc b/src/osd/osd_types.cc
index a73b46fbffd8b..1e620d5009b2a 100644
--- a/src/osd/osd_types.cc
+++ b/src/osd/osd_types.cc
@@ -2545,6 +2545,8 @@ bool pg_interval_t::is_new_interval(
   int new_up_primary,
   const vector<int> &old_up,
   const vector<int> &new_up,
+  int old_size,
+  int new_size,
   int old_min_size,
   int new_min_size,
   unsigned old_pg_num,
@@ -2555,6 +2557,7 @@ bool pg_interval_t::is_new_interval(
     old_up_primary != new_up_primary ||
     new_up != old_up ||
     old_min_size != new_min_size ||
+    old_size != new_size ||
     pgid.is_split(old_pg_num, new_pg_num, 0);
 }
 
@@ -2579,6 +2582,8 @@ bool pg_interval_t::is_new_interval(
 		    new_up_primary,
 		    old_up,
 		    new_up,
+		    lastmap->get_pools().find(pgid.pool())->second.size,
+		    osdmap->get_pools().find(pgid.pool())->second.size,
 		    lastmap->get_pools().find(pgid.pool())->second.min_size,
 		    osdmap->get_pools().find(pgid.pool())->second.min_size,
 		    lastmap->get_pg_num(pgid.pool()),
diff --git a/src/osd/osd_types.h b/src/osd/osd_types.h
index 18f5402501966..f1624335b8887 100644
--- a/src/osd/osd_types.h
+++ b/src/osd/osd_types.h
@@ -1846,6 +1846,8 @@ struct pg_interval_t {
     int new_up_primary,
     const vector<int> &old_up,
     const vector<int> &new_up,
+    int old_size,
+    int new_size,
     int old_min_size,
     int new_min_size,
     unsigned old_pg_num,
diff --git a/src/osdc/Objecter.cc b/src/osdc/Objecter.cc
index 4987a92d75c5b..d1d76cba5229d 100644
--- a/src/osdc/Objecter.cc
+++ b/src/osdc/Objecter.cc
@@ -2458,6 +2458,7 @@ int Objecter::_calc_target(op_target_t *t, epoch_t *last_force_resend,  bool any
     }
   }
 
+  int size = pi->size;
   int min_size = pi->min_size;
   unsigned pg_num = pi->get_pg_num();
   int up_primary, acting_primary;
@@ -2473,6 +2474,8 @@ int Objecter::_calc_target(op_target_t *t, epoch_t *last_force_resend,  bool any
 	  up_primary,
 	  t->up,
 	  up,
+	  t->size,
+	  size,
 	  t->min_size,
 	  min_size,
 	  t->pg_num,
@@ -2499,6 +2502,7 @@ int Objecter::_calc_target(op_target_t *t, epoch_t *last_force_resend,  bool any
     t->acting_primary = acting_primary;
     t->up_primary = up_primary;
     t->up = up;
+    t->size = size;
     t->min_size = min_size;
     t->pg_num = pg_num;
     ldout(cct, 10) << __func__ << " "
diff --git a/src/osdc/Objecter.h b/src/osdc/Objecter.h
index 478c16661b45a..4124a533b2f76 100644
--- a/src/osdc/Objecter.h
+++ b/src/osdc/Objecter.h
@@ -1126,6 +1126,7 @@ class Objecter : public md_config_obs_t, public Dispatcher {
     vector<int> acting;  ///< set of acting osds for last pg we mapped to
     int up_primary;      ///< primary for last pg we mapped to based on the up set
     int acting_primary;  ///< primary for last pg we mapped to based on the acting set
+    int size;        ///< the size of the pool when were were last mapped
     int min_size;        ///< the min size of the pool when were were last mapped
 
     bool used_replica;
@@ -1141,6 +1142,7 @@ class Objecter : public md_config_obs_t, public Dispatcher {
 	pg_num(0),
 	up_primary(-1),
 	acting_primary(-1),
+	size(-1),
 	min_size(-1),
 	used_replica(false),
 	paused(false),