Re: [Libguestfs] [PATCH v2 5/5] launch: direct: Disable qemu locking when opening drives readonly (RHBZ#1417306).

@@ -255,11 +256,13 @@ add_drive_standard_params (guestfs_h *g, struct backend_direct_data *data, } else { /* Writable qcow2 overlay on top of read-only drive. */ - append_list_format ("file=%s", drv->overlay); + append_list_format ("file.file.filename=%s", drv->overlay); + append_list ("file.driver=qcow2"); append_list ("cache=unsafe"); - append_list ("format=qcow2"); if (drv->disk_label) append_list_format ("serial=%s", drv->disk_label); + if (data->qemu_mandatory_locking) + append_list ("file.backing.file.locking=off"); }