$ lvcreate -L 100m -s /dev/vg01/data -n data_snapshot 
$ lvs
  LV            VG   Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root          vg00 -wi-ao----  57,90g
  swap          vg00 -wi-ao----   1,86g
  data          vg01 owi-aos---  30,00g
  data_snapshot vg01 swi-a-s--- 100,00m      data   0,21