def statistic_snapshot_create_error(self, req, start=None, end=None):
"""
list all failed created images,
then statistic for operations.
"""
success, error = self._statistic_snapshot_operation(req, start, end)
error = list_filter.filter_snapshot_error(req, error)
error = list_sort.sort_snapshot_error(req, error)
ret = {"ErrorSnapshotOperation": len(error), "FaultList": error}
if start is not None:
ret.update(start=start)
if end is not None:
ret.update(end=end)
return ret
