[#661] blobovniczatree: Allow to change depth or width

Now it is possible to change depth or with of blobovniczatree.

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

pkg/local_object_storage/blobstor/blobovniczatree/control.go

@@ -8,6 +8,7 @@ import (
 	"strings"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util"
 	"go.uber.org/zap"
 )
 
@@ -39,7 +40,36 @@ func (b *Blobovniczas) Init() error {
 		return nil
 	}
 
-	return b.iterateLeaves(context.TODO(), func(p string) (bool, error) {
+	return b.initializeDBs(context.TODO())
+}
+
+func (b *Blobovniczas) initializeDBs(ctx context.Context) error {
+	err := util.MkdirAllX(b.rootPath, b.perm)
+	if err != nil {
+		return err
+	}
+
+	visited := make(map[string]struct{})
+	err = b.iterateExistingDBPaths(ctx, func(p string) (bool, error) {
+		visited[p] = struct{}{}
+		shBlz := b.getBlobovniczaWithoutCaching(p)
+		_, err := shBlz.Open()
+		if err != nil {
+			return true, err
+		}
+		defer shBlz.Close()
+
+		b.log.Debug(logs.BlobovniczatreeBlobovniczaSuccessfullyInitializedClosing, zap.String("id", p))
+		return false, nil
+	})
+	if err != nil {
+		return err
+	}
+
+	return b.iterateSortedLeaves(ctx, nil, func(p string) (bool, error) {
+		if _, found := visited[p]; found {
+			return false, nil
+		}
 		shBlz := b.getBlobovniczaWithoutCaching(p)
 		_, err := shBlz.Open()
 		if err != nil {