During bootup smartd daemon turns itself off because "No devices to monitor"

opensuse leap 15.4 on asus l210 laptop

/media/q/HDD1 $ systemctl status smartd.service
× smartd.service - Self Monitoring and Reporting Technology (SMART) Daemon
     Loaded: loaded (/usr/lib/systemd/system/smartd.service; enabled; vendor preset: enab>
     Active: failed (Result: exit-code) since Sat 2022-11-26 16:35:54 PST; 1min 28s ago
       Docs: man:smartd(8)
    Process: 892 ExecStart=/usr/sbin/smartd -n $smartd_opts (code=exited, status=17)
   Main PID: 892 (code=exited, status=17)
     Status: "No devices to monitor"
lines 1-8/8 (END)

In /etc/smartd.conf I changed the line
DEVICESCAN -d removable
because I have an sd[x] device that I sometimes use, and sometimes not.

man smartd.conf states about type -d

removable - the device or its media is removable. This indicates to
smartd that it should continue (instead of exiting, which is the default
behavior) if the device does not appear to be present when smartd is

Regardless, the smartd daemon still exits during bootup. What am I doing wrong?

I never used smartctl, thus this comment is based on a short study of the man pages.

As I understand it, you may define the type of a device as “removable”, but you still have to tell which device you define as being “removable”. I do not see that in your story. And that story is missing of course any prove of what you tell. Better show the whole of the configuration file, instead of picking out a few words without any context.

cat /etc/smartd.conf

Unlike yourself, I studied man smartd.conf extensively. Although it recommends specifying a separate line for each device, it does not state that you must do so. I did not specify a device because sometimes that device is on /dev/sda, at other times on /dev/sdb, and I am not sure what determines which it would be. Hence I looked for a more general way to solve the problem.
But acting on your advice I expanded the line

DEVICESCAN type -d removable


DEVICESCAN /dev/sda type -d removable

which produced exactly the same result as before.

I was not “picking out a few words without any context”, as you put it, but one of only 2 active lines in the entire file, and how I had changed it, and quoted the relevant section of the man page to support my action. But as you seem to feel the situation would be clearer if I provide the entirety of /etc/smartd.conf, here it is.

Sample configuration file for smartd. See man smartd.conf.

Home page is: http://www.smartmontools.org

$Id: smartd.conf 4120 2015-08-27 16:12:21Z samm2 $

smartd will re-read the configuration file if it receives a HUP


The file gives a list of devices to monitor using smartd, with one

device per line. Text after a hash (#) is ignored, and you may use

spaces and tabs for white space. You may use ‘’ to continue lines.

You can usually identify which hard disks are on your system by

looking in /proc/ide and in /proc/scsi.

SUSE default:

-d removable: Prevent error messages after disconnecting of

monitored removable discs.

-s S/: Run Short Self Test every day in the deep night.

(Takes several minutes.)

-s L/: Run Extended Self Test every first Sunday in the

month. (Start earlier, it could take tens of hours.)

DEFAULT -d removable -s (S/…/…/./03|L/…/(01|02|03|04|05|06|07)/7/01)

The word DEVICESCAN will cause any remaining lines in this

configuration file to be ignored: it tells smartd to scan for all

ATA and SCSI devices. DEVICESCAN may be followed by any of the

Directives listed below, which will be applied to all devices that

are found. Most users should comment out DEVICESCAN and explicitly

list the devices that they wish to monitor.

DEVICESCAN /dev/sda -d removable

Alternative setting to ignore temperature and power-on hours reports

in syslog.

#DEVICESCAN -I 194 -I 231 -I 9

Alternative setting to report more useful raw temperature in syslog.

#DEVICESCAN -R 194 -R 231 -I 9

Alternative setting to report raw temperature changes >= 5 Celsius

and min/max temperatures.

#DEVICESCAN -I 194 -I 231 -I 9 -W 5

First ATA/SATA or SCSI/SAS disk. Monitor all attributes, enable

automatic online data collection, automatic Attribute autosave, and

start a short self-test every day between 2-3am, and a long self test

Saturdays between 3-4am.

#/dev/sda -a -o on -S on -s (S/…/…/./02|L/…/…/6/03)

Monitor SMART status, ATA Error Log, Self-test log, and track

changes in all attributes except for attribute 194

#/dev/sdb -H -l error -l selftest -t -I 194

Monitor all attributes except normalized Temperature (usually 194),

but track Temperature changes >= 4 Celsius, report Temperatures

>= 45 Celsius and changes in Raw value of Reallocated_Sector_Ct (5).

Send mail on SMART failures or when Temperature is >= 55 Celsius.

#/dev/sdc -a -I 194 -W 4,45,55 -R 5 -m admin@example.com

An ATA disk may appear as a SCSI device to the OS. If a SCSI to

ATA Translation (SAT) layer is between the OS and the device then

this can be flagged with the ‘-d sat’ option. This situation may

become common with SATA disks in SAS and FC environments.

/dev/sda -a -d sat

A very silent check. Only report SMART health status if it fails

But send an email in this case

#/dev/sdc -H -C 0 -U 0 -m admin@example.com

First two SCSI disks. This will monitor everything that smartd can

monitor. Start extended self-tests Wednesdays between 6-7pm and

Sundays between 1-2 am

#/dev/sda -d scsi -s L/…/…/3/18
#/dev/sdb -d scsi -s L/…/…/7/01

Monitor 4 ATA disks connected to a 3ware 6/7/8000 controller which uses

the 3w-xxxx driver. Start long self-tests Sundays between 1-2, 2-3, 3-4,

and 4-5 am.

NOTE: starting with the Linux 2.6 kernel series, the /dev/sdX interface

is DEPRECATED. Use the /dev/tweN character device interface instead.

For example /dev/twe0, /dev/twe1, and so on.

#/dev/sdc -d 3ware,0 -a -s L/…/…/7/01
#/dev/sdc -d 3ware,1 -a -s L/…/…/7/02
#/dev/sdc -d 3ware,2 -a -s L/…/…/7/03
#/dev/sdc -d 3ware,3 -a -s L/…/…/7/04

Monitor 2 ATA disks connected to a 3ware 9000 controller which

uses the 3w-9xxx driver (Linux, FreeBSD). Start long self-tests Tuesdays

between 1-2 and 3-4 am.

#/dev/twa0 -d 3ware,0 -a -s L/…/…/2/01
#/dev/twa0 -d 3ware,1 -a -s L/…/…/2/03

Monitor 2 SATA (not SAS) disks connected to a 3ware 9000 controller which

uses the 3w-sas driver (Linux). Start long self-tests Tuesdays

between 1-2 and 3-4 am.

On FreeBSD /dev/tws0 should be used instead

#/dev/twl0 -d 3ware,0 -a -s L/…/…/2/01
#/dev/twl0 -d 3ware,1 -a -s L/…/…/2/03

Same as above for Windows. Option ‘-d 3ware,N’ is not necessary,

disk (port) number is specified in device name.

NOTE: On Windows, DEVICESCAN works also for 3ware controllers.

#/dev/hdc,0 -a -s L/…/…/2/01
#/dev/hdc,1 -a -s L/…/…/2/03

Monitor 3 ATA disks directly connected to a HighPoint RocketRAID. Start long

self-tests Sundays between 1-2, 2-3, and 3-4 am.

#/dev/sdd -d hpt,1/1 -a -s L/…/…/7/01
#/dev/sdd -d hpt,1/2 -a -s L/…/…/7/02
#/dev/sdd -d hpt,1/3 -a -s L/…/…/7/03

Monitor 2 ATA disks connected to the same PMPort which connected to the

HighPoint RocketRAID. Start long self-tests Tuesdays between 1-2 and 3-4 am

#/dev/sdd -d hpt,1/4/1 -a -s L/…/…/2/01
#/dev/sdd -d hpt,1/4/2 -a -s L/…/…/2/03



-d TYPE Set the device type: ata, scsi, marvell, removable, 3ware,N, hpt,L/M/N

-T TYPE set the tolerance to one of: normal, permissive

-o VAL Enable/disable automatic offline tests (on/off)

-S VAL Enable/disable attribute autosave (on/off)

-n MODE No check. MODE is one of: never, sleep, standby, idle

-H Monitor SMART Health Status, report if failed

-l TYPE Monitor SMART log. Type is one of: error, selftest

-f Monitor for failure of any ‘Usage’ Attributes

-m ADD Send warning email to ADD for -H, -l error, -l selftest, and -f

-M TYPE Modify email warning behavior (see man page)

-s REGE Start self-test when type/date matches regular expression (see man page)

-p Report changes in ‘Prefailure’ Normalized Attributes

-u Report changes in ‘Usage’ Normalized Attributes

-t Equivalent to -p and -u Directives

-r ID Also report Raw values of Attribute ID with -p, -u or -t

-R ID Track changes in Attribute ID Raw value with -p, -u or -t

-i ID Ignore Attribute ID for -f Directive

-I ID Ignore Attribute ID for -p, -u or -t Directive

-C ID Report if Current Pending Sector count non-zero

-U ID Report if Offline Uncorrectable count non-zero

-W D,I,C Monitor Temperature D)ifference, I)nformal limit, C)ritical limit

-v N,ST Modifies labeling of Attribute N (see man page)

-a Default: equivalent to -H -f -t -l error -l selftest -C 197 -U 198

-F TYPE Use firmware bug workaround. Type is one of: none, samsung

-P TYPE Drive-specific presets: use, ignore, show, showall

# Comment: text after a hash sign is ignored

\ Line continuation character

Attribute ID is a decimal integer 1 <= ID <= 255

except for -C and -U, where ID = 0 turns them off.

All but -d, -m and -M Directives are only implemented for ATA devices

If the test string DEVICESCAN is the first uncommented text

then smartd will scan for devices.

DEVICESCAN may be followed by any desired Directives.

I was quite astonished by the tone of your response, it could easily be interpreted as insulting. Perhaps this was inadvertent on your part, deriving from your unfamiliarity with the language. For example, you use the verb form ‘prove’, in a context that requires the noun form ‘proof’.

You should consider to tone down your responses and behave more cooperative. You did not provide any useful information, that’s why hcvv asked that you provide more context and post the complete setting file. You did indeed “pick” some lines out of your configuration file without context.

Answers like yours will repell other ppl with much more experience than you to help you…just saying.
(And insulting/attacking a Global Moderator is never a good starting point as a newbie in a forum…)