@@ -0,0 +72,4 @@
+	}
+}
+
+func TestObjectsAvailableAfterDepthAndWithEdit(t *testing.T) {

@@ -0,0 +59,4 @@
+			return nil
+		}
+
+		if err := bucket.Delete(key); err != nil {

@@ -0,0 +83,4 @@
+		return bucket.ForEach(func(k, v []byte) error {
+			var addr oid.Address
+			storageID := make([]byte, len(v))
+			if e := addressFromKey(&addr, k); e != nil {

@@ -23,3 +23,2 @@
 
-func (db *activeDB) Path() string {
-	return db.shDB.Path()
+func (db *activeDB) SystemPath() string {

@@ -60,2 +62,4 @@
 }
 
+func (c *dbCache) EvictAndMarkNonCached(path string) {
+	c.pathLock.Lock(path) //order important

@@ -38,0 +53,4 @@
+
+	eg, egCtx := errgroup.WithContext(ctx)
+	eg.SetLimit(b.blzInitWorkersCount)
+	visited := make(map[string]bool)

@@ -40,0 +94,4 @@
+			}
+			defer shBlz.Close()
+
+			b.log.Debug(logs.BlobovniczatreeBlobovniczaSuccessfullyInitializedClosing, zap.String("id", p))

@@ -67,0 +145,4 @@
+			if err := b.addDBExtensionToDBs(filepath.Join(path, entry.Name()), depth+1); err != nil {
+				return err
+			}
+		} else {

@@ -42,12 +45,22 @@ func (b *Blobovniczas) Delete(ctx context.Context, prm common.DeletePrm) (res co
 		return common.DeleteRes{}, common.ErrReadOnly
 	}
 
+	if b.rebuildGuard.TryRLock() {

@@ -159,3 +169,1 @@
-// iterator over the paths of Blobovniczas in random order.
-func (b *Blobovniczas) iterateLeaves(ctx context.Context, f func(string) (bool, error)) error {
-	return b.iterateSortedLeaves(ctx, nil, f)
+// iterateExistedDBPaths iterates over the paths of Blobovniczas without any order.

@@ -162,0 +175,4 @@
+}
+
+func (b *Blobovniczas) iterateExistedDBPathsDFS(ctx context.Context, path string, f func(string) (bool, error)) (bool, error) {
+	if path == "" {

@@ -162,0 +182,4 @@
+
+	sysPath := filepath.Join(b.rootPath, path)
+	entries, err := os.ReadDir(sysPath)
+	if os.IsNotExist(err) && b.readOnly && path == "" { //non initialized tree in read only mode

@@ -162,0 +215,4 @@
+	return false, nil
+}
+
+func (b *Blobovniczas) iterateSortedDBPaths(ctx context.Context, addr oid.Address, f func(string) (bool, error)) error {

@@ -162,0 +220,4 @@
+	return err
+}
+
+func (b *Blobovniczas) iterateSorderDBPathsInternal(ctx context.Context, path string, addr oid.Address, f func(string) (bool, error)) (bool, error) {

@@ -162,0 +237,4 @@
+	var dbIdxs []uint64
+	var dirIdxs []uint64
+
+	for _, entry := range entries {

@@ -98,32 +106,108 @@ func (b *sharedDB) Close() {
 	}
 
 	b.refCount--
+	if b.refCount == 1 {

@@ -127,0 +202,4 @@
+}
+
+func (m *levelDbManager) hasAnyDB() bool {
+	m.dbMtx.Lock()

@@ -0,0 +417,4 @@
+}
+
+type addressMap struct {
+	data  map[oid.Address]bool

@@ -0,0 +6,4 @@
+	semaphore chan struct{}
+}
+
+func newRebuildLimiter(workersCount uint32) *rebuildLimiter {

@@ -67,3 +64,1 @@
-		s.deleteObjectFromWriteCacheSafe(ctx, addr)
-
-		s.deleteFromBlobstorSafe(ctx, addr)
+		if err := s.deleteFromBlobstor(ctx, addr); err != nil {

@@ -0,0 +30,4 @@
+}
+
+func (r *rebuilder) Start(ctx context.Context, bs *blobstor.BlobStor, mb *meta.DB, log *logger.Logger) {
+	r.mtx.Lock()