You need to give more info. What is the available size of the rpool? Does it have free space to use?
If there is space available and all you want to do is chnage the quota, you can just use the zfs command
to chnage the quota property:
zfs set quota=20G rpool/ded01.bruno-fernandes
If you do not have any free space, then normally you can just add disks to a zpool, but unfortunately
the rpool is special in this regard and cannot have separate vdevs. Please clarify what you really need
to do.
