Update Date/Time: Fri 19 Oct 21:20:01 BST 2018
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$ /bin/echo "OS: $(/bin/cat /etc/redhat-release) Kernel: $(/bin/uname -r)"

OS: CentOS Linux release 7.5.1804 (Core)  Kernel: 3.10.0-862.14.4.el7.x86_64

$ /bin/dmesg | /bin/grep 'ZFS: Loaded' | /bin/sed 's/^.*ZFS:/ZFS:/'

ZFS: Loaded module v0.7.11-1, ZFS pool version 5000, ZFS filesystem version 5

$ /sbin/zpool status | /bin/sed 's%\(luks-\)[^[:space:]]\+%\100000000-0000-0000-0000-000000000000%g'

  pool: centos_hell01-serv01-core
 state: ONLINE
  scan: scrub repaired 0B in 0h0m with 0 errors on Thu Oct 18 20:00:22 2018
config:

	NAME                                         STATE     READ WRITE CKSUM
	centos_hell01-serv01-core                    ONLINE       0     0     0
	  luks-00000000-0000-0000-0000-000000000000  ONLINE       0     0     0

errors: No known data errors

  pool: centos_hell01-serv01-data
 state: ONLINE
  scan: scrub repaired 0B in 7h57m with 0 errors on Fri Oct 19 03:57:28 2018
config:

	NAME                                           STATE     READ WRITE CKSUM
	centos_hell01-serv01-data                      ONLINE       0     0     0
	  mirror-0                                     ONLINE       0     0     0
	    luks-00000000-0000-0000-0000-000000000000  ONLINE       0     0     0
	    luks-00000000-0000-0000-0000-000000000000  ONLINE       0     0     0
	logs
	  luks-00000000-0000-0000-0000-000000000000    ONLINE       0     0     0
	cache
	  luks-00000000-0000-0000-0000-000000000000    ONLINE       0     0     0

errors: No known data errors

$ /usr/bin/systemctl status sanoid.service -l

● sanoid.service - Snapshot ZFS Pool
   Loaded: loaded (/etc/systemd/system/sanoid.service; static; vendor preset: disabled)
   Active: inactive (dead) since Fri 2018-10-19 21:20:00 BST; 871ms ago
  Process: 10429 ExecStart=/usr/sbin/sanoid --cron (code=exited, status=0/SUCCESS)
 Main PID: 10429 (code=exited, status=0/SUCCESS)

Oct 19 21:20:00 hell01-serv01 systemd[1]: Starting Snapshot ZFS Pool...
Oct 19 21:20:00 hell01-serv01 systemd[1]: Started Snapshot ZFS Pool.