  LV       VG       Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert LV Tags Devices       KRahead Rahead #Str Stripe
  ceph_lv0 ceph_vg0 -wi-a----- <20.00g                                                             /dev/loop3(0)   4.00m   auto    1     0 
