I have HA installed on a raspberry pi 4. Data are stored on 250GB usb stick. I use temperature sensors (via rfxcom) and Shelly devices. Suddenly some cards are not showing any more, sensors also become unavailable. Only statistics cards works. Tried to revert to last full backup but didn’t fix the issue. What could be the cause? Thanks for your help.
What value is shown in more-info for any of these “unavailable” entities?
If “unavailable” in fact - then yes, these entities ARE unavailable.
Possibly related to errors shown in your “integrations” screenshot.
Statistics card may show a graph with old data.
Not sure a backup will fix things. First check the logs for errors to see why the integrations won’t load. What install type and version are you running? How long have you been running HA from the USB stick? These things have limited lifetime with systems like HA that write a lot of data.