In the release notes I saw that they have added the ability to create Hassio snapshots through a service call:
Pascal has made it easier to create and restore snapshots for Hass.io by calling the new services. This way it will be easy to automate the creation of a snapshot at night. The updater has also been fixed and will now report on new versions of Hass.io that are available.
Has anyone seen any documentation around this feature? I was digging through the code and looking at the hassio component and see mention of a snapshot ability, but no documentation around how to use it. And the documentation link in the code does not work (https://home-assistant.io/components/hassio/).