MTM_ROLL_RUNNING
if ((logmap->mtm_flags & MTM_ROLL_RUNNING) == 0) {
logmap->mtm_flags |= MTM_ROLL_RUNNING;
while (mtm->mtm_flags & MTM_ROLL_RUNNING) {
if ((mtm->mtm_flags & MTM_ROLL_RUNNING) == 0) {
logmap->mtm_flags &= ~(MTM_FORCE_ROLL | MTM_ROLL_RUNNING |