MD_ELEMENT_SIZE
(void) memset(mdep, 0, MD_ELEMENT_SIZE);
total_size = MD_HEADER_SIZE + offset * MD_ELEMENT_SIZE +
string_bufferp = bufferp + MD_HEADER_SIZE + offset * MD_ELEMENT_SIZE;
mdhp->node_blk_sz = htomd32(offset * MD_ELEMENT_SIZE);
if (mdp->element_count != (mdp->node_blk_size / MD_ELEMENT_SIZE))