ZFS 0.7.9 was released in Cosmic (18.10). You could update to Cosmic. Alternatively, on 18.04, you can install the HWE kernel package: linux-image-generic-hwe-18.04
ZFS 0.7.9 was released in Cosmic (18.10). You could update to Cosmic. Alternatively, on 18.04, you can install the HWE kernel package: linux-image- generic- hwe-18. 04