diff --git a/state/history.go b/state/history.go
index 52537f741..4f14d01c9 100644
--- a/state/history.go
+++ b/state/history.go
@@ -182,6 +182,7 @@ func (h *History) scanStateFiles(files []fs.DirEntry) {
 				continue
 			}
 		}
+		log.Info("scan files", "name", fmt.Sprintf("%s.%d-%d.v", h.filenameBase, startStep, endStep))
 		h.files.ReplaceOrInsert(item)
 	}
 	if len(uselessFiles) > 0 {
@@ -201,10 +202,12 @@ func (h *History) openFiles() error {
 		fromStep, toStep := item.startTxNum/h.aggregationStep, item.endTxNum/h.aggregationStep
 		datPath := filepath.Join(h.dir, fmt.Sprintf("%s.%d-%d.v", h.filenameBase, fromStep, toStep))
 		if !dir.FileExist(datPath) {
+			log.Warn("open files: not exists!", "name", fmt.Sprintf("%s.%d-%d.v", h.filenameBase, fromStep, toStep))
 			invalidFileItems = append(invalidFileItems, item)
 			return true
 		}
 		if item.decompressor, err = compress.NewDecompressor(datPath); err != nil {
+			log.Warn("open files: NewDecompressor!", "err", err, "name", fmt.Sprintf("%s.%d-%d.v", h.filenameBase, fromStep, toStep))
 			log.Debug("Hisrory.openFiles: %w, %s", err, datPath)
 			return false
 		}
@@ -212,10 +215,13 @@ func (h *History) openFiles() error {
 			idxPath := filepath.Join(h.dir, fmt.Sprintf("%s.%d-%d.vi", h.filenameBase, fromStep, toStep))
 			if dir.FileExist(idxPath) {
 				if item.index, err = recsplit.OpenIndex(idxPath); err != nil {
+					log.Warn("open files: recsplit.OpenIndex!", "err", err, "name", fmt.Sprintf("%s.%d-%d.v", h.filenameBase, fromStep, toStep))
 					log.Debug("Hisrory.openFiles: %w, %s", err, idxPath)
 					return false
 				}
 				totalKeys += item.index.KeyCount()
+			} else {
+				log.Warn("open files: not exists!", "err", fmt.Sprintf("%s.%d-%d.vi", h.filenameBase, fromStep, toStep))
 			}
 		}
 		return true
diff --git a/state/inverted_index.go b/state/inverted_index.go
index f4485446f..6bf81a43a 100644
--- a/state/inverted_index.go
+++ b/state/inverted_index.go
@@ -246,9 +246,11 @@ func (ii *InvertedIndex) openFiles() error {
 		fromStep, toStep := item.startTxNum/ii.aggregationStep, item.endTxNum/ii.aggregationStep
 		datPath := filepath.Join(ii.dir, fmt.Sprintf("%s.%d-%d.ef", ii.filenameBase, fromStep, toStep))
 		if !dir.FileExist(datPath) {
+			log.Warn("open files: not exists!", "name", fmt.Sprintf("%s.%d-%d.ef", ii.filenameBase, fromStep, toStep))
 			invalidFileItems = append(invalidFileItems, item)
 		}
 		if item.decompressor, err = compress.NewDecompressor(datPath); err != nil {
+			log.Warn("open files: compress.NewDecompressor!", "err", err, "name", fmt.Sprintf("%s.%d-%d.ef", ii.filenameBase, fromStep, toStep))
 			log.Debug("InvertedIndex.openFiles: %w, %s", err, datPath)
 			return false
 		}
@@ -257,10 +259,13 @@ func (ii *InvertedIndex) openFiles() error {
 			idxPath := filepath.Join(ii.dir, fmt.Sprintf("%s.%d-%d.efi", ii.filenameBase, fromStep, toStep))
 			if dir.FileExist(idxPath) {
 				if item.index, err = recsplit.OpenIndex(idxPath); err != nil {
-					log.Debug("InvertedIndex.openFiles: %w, %s", err, idxPath)
+					log.Warn("open files: recsplit.OpenIndex!", "err", err, "name", fmt.Sprintf("%s.%d-%d.efi", ii.filenameBase, fromStep, toStep))
+					log.Info("open files: not exists!", "name", fmt.Sprintf("%s.%d-%d.efi", ii.filenameBase, fromStep, toStep))
 					return false
 				}
 				totalKeys += item.index.KeyCount()
+			} else {
+				log.Warn("open files: not exists!", "name", fmt.Sprintf("%s.%d-%d.efi", ii.filenameBase, fromStep, toStep))
 			}
 		}
 		return true