matrix-docker-ansible-deploy/docs/restoring-media-store.md

Restoring media_store data files from an existing installation (optional)

Run this if you'd like to import your media_store files from a previous installation of Matrix Synapse.

Run this command (make sure to replace <local-path-to-media_store> with a path on your local machine):

ansible-playbook -i inventory/hosts setup.yml --extra-vars='local_path_media_store=<local-path-to-media_store>' --tags=import-media-store

Note: <local-path-to-media_store> must be a file path to a media_store directory on your local machine (not on the server!). This directory's contents are then copied to the server.