Patches are ready to solve this entirely in the libvirt layer one & for all. It'll be fixed with libvirt 1.3.3 https://www.redhat.com/archives/libvir-list/2016-February/msg01449.html -- You received this bug notification because you are a member of OpenStack Security, which is subscribed to OpenStack. https://bugs.launchpad.net/bugs/832507 Title: console.log grows indefinitely Status in OpenStack Compute (nova): Confirmed Status in OpenStack Security Advisory: Won't Fix Status in libvirt package in Ubuntu: Fix Released Status in nova package in Ubuntu: Fix Released Status in qemu-kvm package in Ubuntu: Triaged Bug description: KVM takes everything from stdout and prints it to console.log. This does not appear to have a size limit, so if a user (mistakenly or otherwise) sends a lot of data to stdout, the console.log file can fill the entire disk of the compute node quite quickly. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/832507/+subscriptions