testpool  19.5G  2.51G  17.0G        -         -     0%    12%  1.00x    ONLINE  -
root@debian-zfs-master:~# systemctl status zfs-zed
● zfs-zed.service - ZFS Event Daemon (zed)
   Loaded: loaded (/usr/lib/systemd/system/zfs-zed.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2019-02-15 20:54:51 EST; 47s ago
     Docs: man:zed(8)
 Main PID: 1154 (zed)
    Tasks: 3 (limit: 5529)
   CGroup: /system.slice/zfs-zed.service
           └─1154 /sbin/zed -F

Feb 15 20:54:51 debian-zfs-master systemd[1]: Started ZFS Event Daemon (zed).
Feb 15 20:54:51 debian-zfs-master zed[1154]: ZFS Event Daemon 0.8.0-rc3_48_g65282ee9e (PID 1154)
Feb 15 20:54:51 debian-zfs-master zed[1154]: Processing events since eid=0