[IMP] auto_backup: Add timeout note & blog link

auto_backup/README.rst

@@ -72,10 +72,18 @@ manually execute the selected processes.
    :alt: Try me on Runbot
    :target: https://runbot.odoo-community.org/runbot/149/10.0
 
+Known issues / Roadmap
+======================
+
+* On larger databases, it is possible that backups will die due to Odoo server
+  settings. In order to circumvent this without frivolously changing settings,
+  you need to run the backup from outside of the main Odoo instance. How to do
+  this is outlined in `this blog post
+  <https://blog.laslabs.com/2016/10/running-python-scripts-within-odoos-environment/>`_.
+
 Bug Tracker
 ===========
 
-
 Bugs are tracked on `GitHub Issues
 <https://github.com/OCA/server-tools/issues>`_. In case of trouble, please
 check there if your issue has already been reported. If you spotted it first,