I got a message: "Your Jenkins data directory C:\Program Files (x86)\Jenkins (AKA JENKINS_HOME) is almost full. You should act on it before it gets completely full.". When I click "Tell me more button" it doesn't tell much more: "

Your JENKINS_HOME (C:\Program Files (x86)\Jenkins) is almost full. When this directory completely fills up, itll wreak havoc because Jenkins cant store any more data.

To prevent that problem, you should act now.

1. Clean up some files from this partition to make more room.
2. Move JENKINS_HOME to a bigger partition. See our documentation for how to do this"

I would like to know:

1. Which node has the problem?
2. What does it mean "almost full"? Is it less ten 1GiB? Less then 10%?

I feel those information can and should be part of the error message, or at least they should be presented on "tell me more" page.

I have inspected all my nodes and only one of them had full disk but it was E: drive and the error message refers to C: drive.