Similar question exists but the solution (using
mv) is awful because in this case it works as "copy, then remove" rather than pure "move".
So, I created a pool:
zpool create tank /dev/loop0
and rsynced my data from another storage in there directly so that my data is now in
zfs list NAME USED AVAIL REFER MOUNTPOINT tank 591G 2.10T 591G /tank
Now I've realized that I need my data to be in a child filesystem, not in
/tank filesystem directly.
So how do I move or rename the existing root filesystem so that it becomes a child within the pool?
Simple rename won't work:
zfs rename tank tank/mydata cannot rename to 'tank/mydata': datasets must be within same pool
(Btw, why does it complain the datasets are not within same pool when if fact I only have one pool?)
I know there are solutions that involve copying all the data (
mv, or sending the whole dataset to another device and back), but shouldn't there be a simple elegant way?
Just noting that I do not care of snapshots at this stage (there are none yet to care of).