Smartd сообщает, что «количество ошибок журнала самопроверки увеличилось», но не выдает журналы

Я установил и настроил smartdдля выполнения коротких SMART-тестов ежедневно и длинных SMART-тестов еженедельно, и уведомляю меня, когда регистрируются ошибки:

$ ls /dev/sd* /dev/sda /dev/sda1 /dev/sda2 /dev/sdb /dev/sdb1 /dev/sdb2 /dev/sdb3 /dev/sdb4 /dev/sdb5 /dev/sdb6 /dev/sdb7  $ cat /etc/smartd.conf /dev/sda -m root -M diminishing -s (S/../.././23|L/../../1/02) /dev/sdb -m root -M diminishing -s (S/../.././23|L/../../1/02)  # systemctl status smartd ● smartd.service - Self Monitoring and Reporting Technology (SMART) Daemon Loaded: loaded (/lib/systemd/system/smartd.service; enabled; vendor preset: enab Active: active (running) since Tue 2018-06-05 22:46:00 CEST; 1 day 19h ago Docs: man:smartd(8) man:smartd.conf(5) Main PID: 691 (smartd) Tasks: 1 (limit: 4915) CGroup: /system.slice/smartd.service `-691 /usr/sbin/smartd -n --interval=7200  Jun 07 00:46:01 inspiron smartd[691]: Sending warning via <mail> to root ... Jun 07 00:46:01 inspiron smartd[691]: Warning via <mail> to root: successful Jun 07 00:46:01 inspiron smartd[691]: Device: /dev/sdb [SAT], previous self-test co Jun 07 02:46:01 inspiron smartd[691]: Device: /dev/sda [SAT], SMART Usage Attribute Jun 07 04:46:01 inspiron smartd[691]: Device: /dev/sda [SAT], SMART Usage Attribute Jun 07 06:46:01 inspiron smartd[691]: Device: /dev/sda [SAT], SMART Usage Attribute Jun 07 08:46:01 inspiron smartd[691]: Device: /dev/sda [SAT], SMART Usage Attribute Jun 07 10:46:04 inspiron smartd[691]: Device: /dev/sda [SAT], SMART Usage Attribute Jun 07 13:24:29 inspiron smartd[691]: Device: /dev/sda [SAT], SMART Usage Attribute Jun 07 14:46:01 inspiron smartd[691]: Device: /dev/sda [SAT], SMART Usage Attribute 

Однако теперь я получаю электронные письма, в которых сообщается, что «Количество ошибок в журнале самопроверки увеличивалось с 0 до», либо «1», «2» или «3», /dev/sdaкаждые несколько дней.

$ mutt 1 Jun 07 root@inspiron (0.5K) SMART error (SelfTest) detected on host: inspiron 6 Jun 03 root@inspiron (0.5K) SMART error (SelfTest) detected on host: inspiron 7 May 31 root@inspiron (0.5K) SMART error (SelfTest) detected on host: inspiron 16 May 28 root@inspiron (0.5K) SMART error (SelfTest) detected on host: inspiron ---NeoMutt: =localhost [Msgs:8/98 Inc:2 147K]---(reverse-threads/last-date-received)-(50%)--- Date: Thu, 07 Jun 2018 00:46:01 +0200 From: root@inspiron To: root@inspiron Subject: SMART error (SelfTest) detected on host: inspiron X-Mailer: mail (GNU Mailutils 3.1.1)  This message was generated by the smartd daemon running on:  host name: inspiron DNS domain: [Empty]  The following warning/error was logged by the smartd daemon:  Device: /dev/sda [SAT], Self-Test Log error count increased from 0 to 2  Device info: Crucial_CT275MX300SSD4, S/N:163613DAF037, WWN:5-00a075-113daf037, FW:M0CR021, 275 GB  For details see host's SYSLOG.  You can also use the smartctl utility for further investigation. Another message will be sent in 24 hours if the problem persists. 

Электронные письма советуют мне «посмотреть SYSLOG хоста», но системный журнал не содержит ничего интересного и не smartctlсообщает ничего необычного:

# grep smart </var/log/syslog Jun 7 00:46:01 inspiron smartd[691]: Device: /dev/sda [SAT], previous self-test completed without error Jun 7 00:46:01 inspiron smartd[691]: Device: /dev/sda [SAT], Self-Test Log error count increased from 0 to 2 Jun 7 00:46:01 inspiron smartd[691]: Sending warning via <mail> to root ... Jun 7 00:46:01 inspiron smartd[691]: Warning via <mail> to root: successful Jun 7 00:46:01 inspiron smartd[691]: Device: /dev/sdb [SAT], previous self-test completed without error Jun 7 02:46:01 inspiron smartd[691]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 56 to 57  # smartctl -a /dev/sda | sed -n '/Self-test execution status/,/been run/p' Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever  been run. 

Как я могу узнать больше о том, что беспокоит smartd?