Your Jenkins data directory "/home/jenkins" (AKA JENKINS_HOME) is almost full. You should act on it before it gets completely full.

[Artis Abolts]

Hi,

I Have "Your Jenkins data directory "/home/jenkins" (AKA JENKINS_HOME) is almost full. You should act on it before it gets completely full." warning message.

What I must delete, or maybe I can increase storage? 

On server I have much free space.

[Ingo Richter]

Hi,

You can change the workspace and the build record directory to a drive with more available space.

I wrote a blogpost about it a couple of months ago http://ingorichter.blogspot.com/2012/02/jenkins-change-workspaces-and-build.html

I hope this helps,

 Ingo