Delink console text on duplication

app/classes/console.py

@@ -51,3 +51,14 @@ class Console:
                     f.write(text)
             except IOError:
                 logger.warn("Cannot reset console file: %s" % self.file)
+
+    def delink(self):
+        try:
+            if os.path.isfile(self.file) and os.stat(self.file).st_nlink > 1:
+                with open(self.file, "r", encoding="utf-8") as f:
+                    text = f.read()
+                os.unlink(self.file)
+                with open(self.file, "w", encoding="utf-8") as f:
+                    f.write(text)
+        except OSError:
+            logger.warn("Cannot delink console file: %s" % self.file)

app/models/task.py

@@ -438,6 +438,9 @@ class Task(models.Model):
                     try:
                         # Try to use hard links first
                         shutil.copytree(self.task_path(), task.task_path(), copy_function=os.link)
+
+                        # Make sure the console output is not linked to the original task
+                        task.console.delink()
                     except Exception as e:
                         logger.warning("Cannot duplicate task using hard links, will use normal copy instead: {}".format(str(e)))
                         shutil.copytree(self.task_path(), task.task_path())