home-assistant.io/source/_components/sensor.filesize.markdown

layout	title	description	date	sidebar	comments	sharing	footer	logo	ha_category	ha_iot_class	ha_release
page	File size sensor	Component for monitoring the size of a file.	2018-02-06 14:00	true	false	true	true	file.png	Sensor	Local Polling	0.64

Component for displaying the size in MB of a file. Note that paths must be added to whitelist_external_dirs. Add to your config:

sensor:
  - platform: filesize
    file_paths:
      - /config/home-assistant_v2.db

{% configuration %} file_paths: description: The absolute path to the file. required: true type: list of strings {% endconfiguration %}