How can i configure zfs as storage?

hello, I would like to know if someone configured zfs as datastores, I have followed the steps OpenNebula/addon-zfs - Libraries.io.
But the amount of storage does not appear when I run onedatastore list

~# onedatastore list
ID NAME SIZE AVA CLUSTERS IMAGES TYPE DS TM STAT
100 zfs 0M - 0 0 img zfs zfs on
2 files 18.6G 89% 0 0 fil fs ssh on
1 default 18.6G 89% 0 0 img fs ssh on
0 system - - 0 0 sys - ssh on
~# zfs list
NAME USED AVAIL REFER MOUNTPOINT
pool1 278G 1.75T 128K /pool1
pool1/one 266K 1.48T 139K /pool1/one
pool1/one/images 128K 1.48T 128K /pool1/one/images

Can somebody help me ?