search for: my_overlay

...n the handle is closed: https://github.com/libguestfs/libguestfs/blob/master/lib/drives.c#L68 https://github.com/libguestfs/libguestfs/blob/master/lib/launch-direct.c#L78 However you can simply create your own overlay and use that. Run something like: qemu-img create -b orig_disk -f qcow2 my_overlay and change the guestfs_add_drive_opts call to use ?my_overlay? and don't use the readonly flag. > I'm talking about read-only mode so the real disks are not touched. The above won't touch the original disk, as long as you do _not_ run any commands such as ?qemu-img commit?. Rich....