Ah, think I see it, did u run upgrade() on the backend before running?
https://github.com/openstack/taskflow/blob/master/taskflow/persistence/backends/base.py#L61
When the file/dir persistence backend is used this goes through and creates the needed directories.
https://github.com/openstack/taskflow/blob/master/taskflow/persistence/backends/impl_dir.py#L301
Ah, think I see it, did u run upgrade() on the backend before running?
https:/ /github. com/openstack/ taskflow/ blob/master/ taskflow/ persistence/ backends/ base.py# L61
When the file/dir persistence backend is used this goes through and creates the needed directories.
https:/ /github. com/openstack/ taskflow/ blob/master/ taskflow/ persistence/ backends/ impl_dir. py#L301