while (remove_end >= 0) {
fseek(infile,sizeof(rrd_value_t)*rrdnew.stat_head->ds_cnt,SEEK_CUR);
rrdnew.rra_ptr[target_rra].cur_row--;
while (remove_end >= 0) {
fseek(infile,sizeof(rrd_value_t)*rrdnew.stat_head->ds_cnt,SEEK_CUR);
rrdnew.rra_ptr[target_rra].cur_row--;