Device open failed, device did not return an IDENTIFY DEVICE

[Anagastes]

Hi guys,

the exporter cant open one device.

smartctl_exporter[609640]: time=2025-04-02T20:45:06.140Z level=ERROR source=readjson.go:135 msg="Device open failed, device did not return an IDENTIFY DEVICE structure, or device is in a low-power mode" device="/dev/sda;sat (sda)"

But directly smartctl -a /dev/sda works.

The systemd service run as root user. So I dont have any idea :D
Do you have an idea? xD

[k0ste]

Do you have an idea? xD

You can get more information about what the exporter is actually trying to do, by raising the logging level to debug

[Anagastes]

Do you have an idea? xD

You can get more information about what the exporter is actually trying to do, by raising the logging level to debug

Found it.

this one cause this error.

--nocheck=standby

If i use smartctl wth this args, it works.

smartctl --json --info --health --attributes --tolerance=verypermissive --nocheck=standby --format=brief -a /dev/sda

But how can I say the exporter to use not --nocheck=standby?

[k0ste]

But how can I say the exporter to use not --nocheck=standby?

Not how, but when. When @SuperQ merge PR #242

[NiceGuyIT]

PR #242 has been merged. @Anagastes Can you build from master and test if the --smartctl.powermode-check flag fixes the issue?

[Anagastes]

PR #242 has been merged. @Anagastes Can you build from master and test if the --smartctl.powermode-check flag fixes the issue?

If build it now with go version go1.24.2 linux/arm64

And changed my systemd service.

[Unit]
Description=Prometheus exporter for SMART

[Service]
Restart=always
ExecStart=/usr/local/bin/smartctl_exporter --smartctl.powermode-check
[Install]
WantedBy=multi-user.target

Only I must have missed something. Because the binary does not start with this flag. It does without it :)

 ░░ The job identifier is 18007.
Apr 22 14:25:06 HOST smartctl_exporter[1464599]: smartctl_exporter: error: expected argument for flag '--smartctl.powermode-check', try --help
Apr 22 14:25:06 HOST systemd[1]: smartctl_exporter.service: Main process exited, code=exited, status=1/FAILURE
░░ Subject: Unit process exited
░░ Defined-By: systemd
░░ Support: https://www.debian.org/support

[k0ste]

Only I must have missed something

You forget to add the value of the flag. "Must be one of: never, sleep, standby, idle"

[Anagastes]

My mistake. Sorry. :S

Hm, now it starts. I think it's working now.

I have metrics about the device. Still need to configure a bit in Grafana. But I think the data is there now. :)

[k0ste]

The fix/feature released in v0.14.0

[Anagastes]

The fix/feature released in v0.14.0

I have tested the release, it also works. So I close the case :)

[k0ste]

I have tested the release, it also works. So I close the case :)

In #290 will add more clear help, what argument values exactly supported