diff --git a/client/daemon/storage/local_storage.go b/client/daemon/storage/local_storage.go
index be0644310..329f13347 100644
--- a/client/daemon/storage/local_storage.go
+++ b/client/daemon/storage/local_storage.go
@@ -505,10 +505,6 @@ func (t *localTaskStore) CanReclaim() bool {
 	return false
 }
 
-func (t *localTaskStore) MarkInvalid() {
-	t.invalid.Store(true)
-}
-
 // MarkReclaim will try to invoke gcCallback (normal leave peer task)
 func (t *localTaskStore) MarkReclaim() {
 	if t.reclaimMarked.Load() {
diff --git a/client/daemon/storage/local_storage_subtask.go b/client/daemon/storage/local_storage_subtask.go
index 4d238d379..4b1ed7cf2 100644
--- a/client/daemon/storage/local_storage_subtask.go
+++ b/client/daemon/storage/local_storage_subtask.go
@@ -391,20 +391,16 @@ func (t *localSubTaskStore) CanReclaim() bool {
 	return false
 }
 
-func (t *localSubTaskStore) MarkInvalid() {
-	if t.parent.Done || t.invalid.Load() {
-		return
-	}
-	t.parent.MarkInvalid()
-}
-
 func (t *localSubTaskStore) MarkReclaim() {
+	// gc this subtask with gcCallback from parent
 	t.parent.gcCallback(CommonTaskRequest{
 		PeerID: t.PeerID,
 		TaskID: t.TaskID,
 	})
 	t.Infof("sub task %s/%s will be reclaimed, marked", t.TaskID, t.PeerID)
+
 	t.parent.Lock()
+	// remove subtask from parent
 	delete(t.parent.subtasks, PeerTaskMetadata{
 		PeerID: t.PeerID,
 		TaskID: t.TaskID,
diff --git a/client/daemon/storage/mocks/stroage_manager_mock.go b/client/daemon/storage/mocks/stroage_manager_mock.go
index 53a52def8..cc19423bb 100644
--- a/client/daemon/storage/mocks/stroage_manager_mock.go
+++ b/client/daemon/storage/mocks/stroage_manager_mock.go
@@ -224,18 +224,6 @@ func (mr *MockReclaimerMockRecorder) CanReclaim() *gomock.Call {
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "CanReclaim", reflect.TypeOf((*MockReclaimer)(nil).CanReclaim))
 }
 
-// MarkInvalid mocks base method.
-func (m *MockReclaimer) MarkInvalid() {
-	m.ctrl.T.Helper()
-	m.ctrl.Call(m, "MarkInvalid")
-}
-
-// MarkInvalid indicates an expected call of MarkInvalid.
-func (mr *MockReclaimerMockRecorder) MarkInvalid() *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "MarkInvalid", reflect.TypeOf((*MockReclaimer)(nil).MarkInvalid))
-}
-
 // MarkReclaim mocks base method.
 func (m *MockReclaimer) MarkReclaim() {
 	m.ctrl.T.Helper()
diff --git a/client/daemon/storage/storage_manager.go b/client/daemon/storage/storage_manager.go
index 9117ac5fb..db3e7f24b 100644
--- a/client/daemon/storage/storage_manager.go
+++ b/client/daemon/storage/storage_manager.go
@@ -83,9 +83,6 @@ type Reclaimer interface {
 	// MarkReclaim marks the storage which will be reclaimed
 	MarkReclaim()
 
-	// marks the special storage invalid, that will reclaim next gc round
-	MarkInvalid()
-
 	// Reclaim reclaims the storage
 	Reclaim() error
 }