confict

src/main/java/com/kamco/cd/training/train/service/TmpDatasetService.java

@@ -92,8 +92,20 @@ public class TmpDatasetService {
       Files.delete(dst);
     }
 
+    try {
+      Files.createLink(dst, src);
+      log.info("hardlink created: {} -> {}", dst, src);
+    } catch (FileSystemException e) {
+      if (e.getMessage() != null && e.getMessage().contains("Invalid cross-device link")) {
+        log.warn(
+            "Hardlink failed due to cross-device link. Fallback to symlink. src={}, dst={}",
+            src,
+            dst);
         Files.createSymbolicLink(dst, src);
-    log.info("symlink created: {} -> {}", dst, src);
+      } else {
+        throw e;
+      }
+    }
 
     return 1;
   }