Hey there! I'm experiencing a strange behavior with libvirt and backing chains. Getting higher than the first overlay results in a permission denied to the base image and I can't start any machine. # Results while attempting to start machine (after every attemt the whole files from ./houseBackup are restored) Base.img (ok - Win 10 Installation starting) FirstFloor.ovl (ok - Win 10 Installation starting) SecondFloor.ovl (permission denied -> Base.img) => assumed Bug Roof.ovl (permission denied -> Base.img) => assumed Bug The bug is described in detail here together with a minimal example. But maybe I'm still doing something wrong and somebody can give me a heads up =). https://bugzilla.redhat.com/show_bug.cgi?id=1588373 Thx, yours Xensemann!