MDF_FULL_SYNC
if (drbd_md_test_flag(device->ldev, MDF_FULL_SYNC)) {
drbd_md_clear_flag(device, MDF_FULL_SYNC);
drbd_md_set_flag(device, MDF_FULL_SYNC);
drbd_md_clear_flag(device, MDF_FULL_SYNC);
md->flags |= MDF_FULL_SYNC | MDF_AL_DISABLED;
if (drbd_md_test_flag(device->ldev, MDF_FULL_SYNC) ||
(drbd_md_test_flag(device->ldev, MDF_FULL_SYNC) ?
drbd_md_set_flag(device, MDF_FULL_SYNC);