[#826] blobovniczatree: Do not create DB's on init

Blobovniczas will be created on write requests.

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/local_object_storage/blobstor/blobovniczatree/option.go

@@ -26,6 +26,7 @@ type cfg struct {
 	waitBeforeDropDB   time.Duration
 	blzInitWorkerCount int
 	blzMoveBatchSize   int
+	createDBInAdvance  bool
 }
 
 type Option func(*cfg)
@@ -139,3 +140,10 @@ func WithInitWorkerCount(v int) Option {
 		c.blzInitWorkerCount = v
 	}
 }
+
+// WithInitInAdvance returns an option to create blobovnicza tree DB's in advance.
+func WithInitInAdvance(v bool) Option {
+	return func(c *cfg) {
+		c.createDBInAdvance = v
+	}
+}