[Libguestfs] [PATCH] launch: direct: specify format for appliance drive

The drive used for the appliance is a raw (sparse) disk: specify that explicitly in its -drive qemu command line options, so qemu can skip the autodetection of its format and save a tiny bit of time. --- src/launch-direct.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/launch-direct.c b/src/launch-direct.c index ee0a855..8521e5a 100644 --- a/src/launch-direct.c +++ b/src/launch-direct.c @@ -563,7 +563,7 @@ launch_direct (guestfs_h *g, void *datav, const char *arg) /* Add the ext2 appliance drive (after all the drives). */ if (has_appliance_drive) { ADD_CMDLINE ("-drive"); - ADD_CMDLINE_PRINTF ("file=%s,snapshot=on,id=appliance,cache=unsafe,if=none", + ADD_CMDLINE_PRINTF ("file=%s,snapshot=on,id=appliance,cache=unsafe,if=none,format=raw", appliance); if (virtio_scsi) { -- 2.5.5