diff --git a/IPython/html/services/notebooks/filenbmanager.py b/IPython/html/services/notebooks/filenbmanager.py
index 78500ff..8e99bc5 100644
--- a/IPython/html/services/notebooks/filenbmanager.py
+++ b/IPython/html/services/notebooks/filenbmanager.py
@@ -85,7 +85,18 @@ class FileNotebookManager(NotebookManager):
os.mkdir(new)
except:
raise TraitError("Couldn't create checkpoint dir %r" % new)
-
+
+ def _copy(self, src, dest):
+ """copy src to dest
+
+ like shutil.copy2, but log errors in copystat
+ """
+ shutil.copyfile(src, dest)
+ try:
+ shutil.copystat(src, dest)
+ except OSError as e:
+ self.log.debug("copystat on %s failed", dest, exc_info=True)
+
def get_notebook_names(self, path=''):
"""List all notebook names in the notebook dir and path."""
path = path.strip('/')
@@ -432,7 +443,7 @@ class FileNotebookManager(NotebookManager):
self.log.debug("creating checkpoint for notebook %s", name)
if not os.path.exists(self.checkpoint_dir):
os.mkdir(self.checkpoint_dir)
- shutil.copy2(nb_path, cp_path)
+ self._copy(nb_path, cp_path)
# return the checkpoint info
return self.get_checkpoint_model(checkpoint_id, name, path)
@@ -465,7 +476,7 @@ class FileNotebookManager(NotebookManager):
# ensure notebook is readable (never restore from an unreadable notebook)
with io.open(cp_path, 'r', encoding='utf-8') as f:
current.read(f, u'json')
- shutil.copy2(cp_path, nb_path)
+ self._copy(cp_path, nb_path)
self.log.debug("copying %s -> %s", cp_path, nb_path)
def delete_checkpoint(self, checkpoint_id, name, path=''):