Grafana 8 - Graph disappearing from our dashboard(s)

  • Last week we upgraded from Grafana 7.5 to Grafana 8.1.1 - running into a container
    Since then whenever we edit/save a dashboard some graph seems to disappear. In this very specific case our disk space graph are concerned. Even I do not change anything, save and reload my page the graphs will be gone.

I will then restore the dashboard from a previous version and my graphs are back.

The really weird thing is that I do not see my graph as part of the JSON file anymore. Even when they are still visible before I save.

I really do not understand the issue here. Am i the only one facing this one ?

Please find here my dashboard JSON Ubuntu Pastebin

do you mean that they are “gone” like the queries are now broken, or gone as in the panels are “gone”. I was able to load that json into 8.1.2, fwiw. The panels were empty, of course, but they all seemed present…

By gone I just mean that the panel is no longer on my dashboard. Totally wiped out.

You said you just imported the json, did you had any panels about Disk usage ? One of them is ‘beemje04 - Disk usage for /home’. Because it exists on the dashboard I currently have (the source of the json output), but as mentionned above this panel (among others) will dissapear whenever I save. And does not seems to exist in the json.

I did some investigation with my test server still running on Grafana 7.5 and the very same dashboard goes from a ±3700 lines JSON to ±1500 lines in Grafana 8.

https://pastebin.ubuntu.com/p/ppbyvJhYVy/

So in the process my json is getting smaller and loosing panels

When you say this, are you saying that you just upgraded Grafana and the auto-migrations truncated the JSON, or are you exporting/importing the JSON in some other way?

Both ways actually, during the upgrade it seems that the json were truncated, then again when I import json from an older server the json are truncated.

Downgrading grafana to 7.5 restored the dashboards an json to their original states.