fix: Do not cleanup range files in cache SaveMetadata when total hits are false (#10728)

cmd/disk-cache-backend.go

@@ -538,13 +538,16 @@ func (c *diskCache) saveMetadata(ctx context.Context, bucket, object string, met
 			}
 			m.Ranges[rs.String(actualSize)] = rsFileName
 		}
-	} else {
+	}
+	if rs == nil && !incHitsOnly {
 		// this is necessary cleanup of range files if entire object is cached.
+		if _, err := os.Stat(pathJoin(cachedPath, cacheDataFile)); err == nil {
 			for _, f := range m.Ranges {
 				removeAll(pathJoin(cachedPath, f))
 			}
 			m.Ranges = nil
 		}
+	}
 	m.Stat.Size = actualSize
 	m.Stat.ModTime = UTCNow()
 	if !incHitsOnly {