diff --git a/pkg/local_object_storage/shard/metrics_test.go b/pkg/local_object_storage/shard/metrics_test.go
index 91e158b0..3d904331 100644
--- a/pkg/local_object_storage/shard/metrics_test.go
+++ b/pkg/local_object_storage/shard/metrics_test.go
@@ -36,6 +36,29 @@ func (m *metricsStore) SetObjectCounter(objectType string, v uint64) {
 	m.objCounters[objectType] = v
 }
 
+func (m *metricsStore) getObjectCounter(objectType string) uint64 {
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	return m.objCounters[objectType]
+}
+
+func (m *metricsStore) containerSizes() map[string]int64 {
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+
+	r := make(map[string]int64, len(m.cnrSize))
+	for c, s := range m.cnrSize {
+		r[c] = s
+	}
+	return r
+}
+
+func (m *metricsStore) payloadSize() int64 {
+	m.mtx.Lock()
+	defer m.mtx.Unlock()
+	return m.pldSize
+}
+
 func (m *metricsStore) AddToObjectCounter(objectType string, delta int) {
 	m.mtx.Lock()
 	defer m.mtx.Unlock()
@@ -124,10 +147,10 @@ func TestCounters(t *testing.T) {
 	}
 
 	t.Run("defaults", func(t *testing.T) {
-		require.Zero(t, mm.objCounters[physical])
-		require.Zero(t, mm.objCounters[logical])
-		require.Empty(t, mm.cnrSize)
-		require.Zero(t, mm.pldSize)
+		require.Zero(t, mm.getObjectCounter(physical))
+		require.Zero(t, mm.getObjectCounter(logical))
+		require.Empty(t, mm.containerSizes())
+		require.Zero(t, mm.payloadSize())
 	})
 
 	var totalPayload int64
@@ -150,10 +173,10 @@ func TestCounters(t *testing.T) {
 			require.NoError(t, err)
 		}
 
-		require.Equal(t, uint64(objNumber), mm.objCounters[physical])
-		require.Equal(t, uint64(objNumber), mm.objCounters[logical])
-		require.Equal(t, expectedSizes, mm.cnrSize)
-		require.Equal(t, totalPayload, mm.pldSize)
+		require.Equal(t, uint64(objNumber), mm.getObjectCounter(physical))
+		require.Equal(t, uint64(objNumber), mm.getObjectCounter(logical))
+		require.Equal(t, expectedSizes, mm.containerSizes())
+		require.Equal(t, totalPayload, mm.payloadSize())
 	})
 
 	t.Run("inhume_GC", func(t *testing.T) {
@@ -167,10 +190,10 @@ func TestCounters(t *testing.T) {
 			require.NoError(t, err)
 		}
 
-		require.Equal(t, uint64(objNumber), mm.objCounters[physical])
-		require.Equal(t, uint64(objNumber-inhumedNumber), mm.objCounters[logical])
-		require.Equal(t, expectedSizes, mm.cnrSize)
-		require.Equal(t, totalPayload, mm.pldSize)
+		require.Equal(t, uint64(objNumber), mm.getObjectCounter(physical))
+		require.Equal(t, uint64(objNumber-inhumedNumber), mm.getObjectCounter(logical))
+		require.Equal(t, expectedSizes, mm.containerSizes())
+		require.Equal(t, totalPayload, mm.payloadSize())
 
 		oo = oo[inhumedNumber:]
 	})
@@ -179,8 +202,8 @@ func TestCounters(t *testing.T) {
 		var prm shard.InhumePrm
 		ts := objectcore.AddressOf(testutil.GenerateObject())
 
-		phy := mm.objCounters[physical]
-		logic := mm.objCounters[logical]
+		phy := mm.getObjectCounter(physical)
+		logic := mm.getObjectCounter(logical)
 
 		inhumedNumber := int(phy / 4)
 		prm.SetTarget(ts, addrFromObjs(oo[:inhumedNumber])...)
@@ -188,10 +211,10 @@ func TestCounters(t *testing.T) {
 		_, err := sh.Inhume(context.Background(), prm)
 		require.NoError(t, err)
 
-		require.Equal(t, phy, mm.objCounters[physical])
-		require.Equal(t, logic-uint64(inhumedNumber), mm.objCounters[logical])
-		require.Equal(t, expectedSizes, mm.cnrSize)
-		require.Equal(t, totalPayload, mm.pldSize)
+		require.Equal(t, phy, mm.getObjectCounter(physical))
+		require.Equal(t, logic-uint64(inhumedNumber), mm.getObjectCounter(logical))
+		require.Equal(t, expectedSizes, mm.containerSizes())
+		require.Equal(t, totalPayload, mm.payloadSize())
 
 		oo = oo[inhumedNumber:]
 	})
@@ -199,8 +222,8 @@ func TestCounters(t *testing.T) {
 	t.Run("Delete", func(t *testing.T) {
 		var prm shard.DeletePrm
 
-		phy := mm.objCounters[physical]
-		logic := mm.objCounters[logical]
+		phy := mm.getObjectCounter(physical)
+		logic := mm.getObjectCounter(logical)
 
 		deletedNumber := int(phy / 4)
 		prm.SetAddresses(addrFromObjs(oo[:deletedNumber])...)
@@ -208,8 +231,8 @@ func TestCounters(t *testing.T) {
 		_, err := sh.Delete(context.Background(), prm)
 		require.NoError(t, err)
 
-		require.Equal(t, phy-uint64(deletedNumber), mm.objCounters[physical])
-		require.Equal(t, logic-uint64(deletedNumber), mm.objCounters[logical])
+		require.Equal(t, phy-uint64(deletedNumber), mm.getObjectCounter(physical))
+		require.Equal(t, logic-uint64(deletedNumber), mm.getObjectCounter(logical))
 		var totalRemovedpayload uint64
 		for i := range oo[:deletedNumber] {
 			removedPayload := oo[i].PayloadSize()
@@ -218,8 +241,8 @@ func TestCounters(t *testing.T) {
 			cnr, _ := oo[i].ContainerID()
 			expectedSizes[cnr.EncodeToString()] -= int64(removedPayload)
 		}
-		require.Equal(t, expectedSizes, mm.cnrSize)
-		require.Equal(t, totalPayload-int64(totalRemovedpayload), mm.pldSize)
+		require.Equal(t, expectedSizes, mm.containerSizes())
+		require.Equal(t, totalPayload-int64(totalRemovedpayload), mm.payloadSize())
 	})
 }