hook script for changing disk definition before guest start

Hi all, due to this [1] I am trying to change a guest's disk definition from "pool volume" to "file" via hook scripts. This seems an easy task via virsh detach-disk and virsh attach-disk, but virsh can not be called inside libvirt hook scripts. The best approach would be to change the disk definition right when a disk is attached, but I can not find any event calling a hook script when a disk is attache/detached. Do you have any suggestion short of monitoring the directory /etc/libvirt/qemu itself for changed files? Thanks. [1] https://github.com/cockpit-project/cockpit-machines/issues/815 -- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it email: g.danti@assyoma.it - info@assyoma.it GPG public key ID: FF5F32A8