A ZFS clone is a writable copy of a file system with the initial content of the clone being identical to the original file system.

• A ZFS clone can only be created from a ZFS snapshot and the snapshot cannot be destroyed until the clones created from it are also destroyed.

First take a snapshot and then clone:

sudo zfs snapshot -r testpool/projects@snap1
sudo zfs clone testpool/projects@snap1 testpool/projects-clone

Detailed Instructions