Test that preallocating metadata results in a somewhat larger qcow2 file, but preallocating data only affects the disk usage of the data file and the qcow2 file stays small. Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>