On Mon, Sep 26, 2016 at 11:42:41AM CEST, Tony van der Hoff <t...@vanderhoff.org> said: > Hi, > > For the last few days, my jessie VM has apparently run out of disk space > overnight. df shows 100% usage on / but du does not show any enormous files. > > If I reboot, the disk usage goes back to 50% on a 40GB volume. > > How can I determine what is eating the space?
A possibility is that you have processes writing into deleted files. You can see them with lsof +L1 (as root)