lv_t
lv_t lv[MAX_LVM_LV];
lv_t *dev_ptr = ((struct part_entry *)arg)[opt].dev_ptr;
lv_t *dev_ptr = arg;
lv_t *dev_ptr = arg;
lv_t *dev_ptr = arg;
*dev_ptr = (struct lv_t) {
lv_t *dev_ptr = arg;