diff --git a/extern/filecoin-ffi b/extern/filecoin-ffi
index b1a66cfd1..ce7083b3d 160000
--- a/extern/filecoin-ffi
+++ b/extern/filecoin-ffi
@@ -1 +1 @@
-Subproject commit b1a66cfd12686a8af6030fccace49916849b1954
+Subproject commit ce7083b3d187ec3bc41a68ab66567bd4f3be6dfc
diff --git a/extern/sector-storage/ffiwrapper/sealer_cgo.go b/extern/sector-storage/ffiwrapper/sealer_cgo.go
index f2d09c90a..6a6e3f56c 100644
--- a/extern/sector-storage/ffiwrapper/sealer_cgo.go
+++ b/extern/sector-storage/ffiwrapper/sealer_cgo.go
@@ -685,9 +685,9 @@ func (sb *Sealer) ReplicaUpdate(ctx context.Context, sector storage.SectorRef, p
 	}
 
 	// XXX: we want to keep the stuff at the end
-	// if err := os.Truncate(paths.Unsealed, sealedSize); err != nil {
-	// 	return empty, xerrors.Errorf("failed to truncate unsealed data file: %w", err)
-	// }
+	if err := os.Truncate(paths.Unsealed, sealedSize); err != nil {
+		return empty, xerrors.Errorf("failed to truncate unsealed data file: %w", err)
+	}
 
 	sealed, unsealed, err := ffi.SectorUpdate.EncodeInto(updateProofType, paths.Update, paths.UpdateCache, paths.Sealed, paths.Cache, paths.Unsealed, pieces)
 	if err != nil {
diff --git a/extern/sector-storage/manager_test.go b/extern/sector-storage/manager_test.go
index 59db66bac..6e71430b5 100644
--- a/extern/sector-storage/manager_test.go
+++ b/extern/sector-storage/manager_test.go
@@ -68,11 +68,16 @@ func newTestStorage(t *testing.T) *testStorage {
 }
 
 func (t testStorage) cleanup() {
-	// 	for _, path := range t.StoragePaths {
-	// 		if err := os.RemoveAll(path.Path); err != nil {
-	// 			fmt.Println("Cleanup error:", err)
-	// 		}
-	// 	}
+	noCleanup := os.Getenv("LOTUS_TEST_NO_CLEANUP") != ""
+	for _, path := range t.StoragePaths {
+		if noCleanup {
+			fmt.Printf("Not cleaning up test storage at %s\n", path)
+			continue
+		}
+		if err := os.RemoveAll(path.Path); err != nil {
+			fmt.Println("Cleanup error:", err)
+		}
+	}
 }
 
 func (t testStorage) GetStorage() (stores.StorageConfig, error) {