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

On Tuesday, 12 September 2017 14:29:16 CEST Richard W.M. Jones wrote: > @@ -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"); > } The same ought to be done for the appliance drive too.