[smartmontools-support] journalctl -b -u smartd finds nothing

[David C. Partridge]

Since upgrading my Ubuntu system to 20.04.01 (smartmontools 7.1-1) if I
search for smartd entries in the log using journalctl I don't find any :(

amonra at Charon:~$ journalctl -b | grep smartd
Oct 08 21:51:35 Charon smartd[944]: smartd 7.1 2019-12-30 r5022
[x86_64-linux-5.4.0-48-generic] (local build)
Oct 08 21:51:35 Charon smartd[944]: Copyright (C) 2002-19, Bruce Allen,
Christian Franke, www.smartmontools.org
Oct 08 21:51:35 Charon smartd[944]: Opened configuration file
/etc/smartd.conf
Oct 08 21:51:35 Charon smartd[944]: Drive: DEVICESCAN, implied '-a'
Directive on line 21 of file /etc/smartd.conf
Oct 08 21:51:35 Charon smartd[944]: Configuration file /etc/smartd.conf was
parsed, found DEVICESCAN, scanning devices
Oct 08 21:51:35 Charon smartd[944]: Device: /dev/sda, opened
Oct 08 21:51:35 Charon smartd[944]: Device: /dev/sda, [Adaptec  Shared
V1.0], S/N: B81AE929, 27.9 TB
Oct 08 21:51:35 Charon smartd[944]: Device: /dev/sda, does not support SMART
Self-Test Log.
Oct 08 21:51:35 Charon smartd[944]: Device: /dev/sda, is SMART capable.
Adding to "monitor" list.
Oct 08 21:51:35 Charon smartd[944]: Device: /dev/sda, state read from
/var/lib/smartmontools/smartd.Adaptec-Shared-B81AE929.scsi.state
Oct 08 21:51:35 Charon smartd[944]: Device: /dev/sdb, type changed from
'scsi' to 'sat'
Oct 08 21:51:35 Charon smartd[944]: Device: /dev/sdb [SAT], opened
Oct 08 21:51:35 Charon smartd[944]: Device: /dev/sdb [SAT], KINGSTON
SVP100S296G, S/N:312Y10B7Y5SK, FW:CJR10202, 96.0 GB
Oct 08 21:51:35 Charon smartd[944]: Device: /dev/sdb [SAT], found in smartd
database: JMicron based SSDs
Oct 08 21:51:36 Charon smartd[944]: Device: /dev/sdb [SAT], can't monitor
Offline_Uncorrectable count - no Attribute 198
Oct 08 21:51:36 Charon smartd[944]: Device: /dev/sdb [SAT], is SMART
capable. Adding to "monitor" list.
Oct 08 21:51:36 Charon smartd[944]: Device: /dev/sdb [SAT], state read from
/var/lib/smartmontools/smartd.KINGSTON_SVP100S296G-312Y10B7Y5SK.ata.state
Oct 08 21:51:36 Charon smartd[944]: Monitoring 1 ATA/SATA, 1 SCSI/SAS and 0
NVMe devices
Oct 08 21:51:36 Charon smartd[944]: Device: /dev/sda, state written to
/var/lib/smartmontools/smartd.Adaptec-Shared-B81AE929.scsi.state
Oct 08 21:51:36 Charon smartd[944]: Device: /dev/sdb [SAT], state written to
/var/lib/smartmontools/smartd.KINGSTON_SVP100S296G-312Y10B7Y5SK.ata.state
amonra at Charon:~$ journalctl -b -u smartd
-- Logs begin at Mon 2018-10-22 13:58:37 BST, end at Thu 2020-10-08 21:55:16
BST. --
-- No entries --
amonra at Charon

Any clues as to what's amiss?

Thanks
David