I have to move my Munin instance on new server. I've installed from package (Debian) Munin 2.x. All was fine, but ... I copied /var/lib/munin to new server. But after updating munin overwrite old data and i have empty graph :( Could you tell me why? And how i can save old data?
I tried rrdtool dump/restore too. It was the same :(
Thank you for answer and help.