VD_BLOCK_DEVICE_PROP
if (md_get_prop_str(md, vd_node, VD_BLOCK_DEVICE_PROP,
PRN("Error getting vdisk \"%s\"", VD_BLOCK_DEVICE_PROP);
if (md_get_prop_str(prev_md, prev_vd_node, VD_BLOCK_DEVICE_PROP,
VD_BLOCK_DEVICE_PROP);
if (md_get_prop_str(curr_md, curr_vd_node, VD_BLOCK_DEVICE_PROP,
PRN("Error getting current vdisk \"%s\"", VD_BLOCK_DEVICE_PROP);