#804168 smartmontools: The temperature values in the systemlog not Celcuis but Fahrenheit

Package:
smartmontools
Source:
smartmontools
Description:
control and monitor storage systems using S.M.A.R.T.
Submitter:
henk
Date:
2019-10-11 09:57:03 UTC
Severity:
normal
#804168#5
Date:
2015-11-05 17:27:50 UTC
From:
To:
Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

Looking at systemlog and alarming temperature hard disks.
The temperature values in the systemlog apair to be in Fahrenheit although
Celcius is explicitly mentioned there.
These log values difer from those after executing smartctl -x /dev/sda.

*** End of the template - remove these template lines ***
#804168#10
Date:
2015-11-22 13:55:47 UTC
From:
To:
Please provide info about affected drive models and sample temperature
outputs from smartd and smartctl.

Note that a ATA/SATA devices may have various sources for current
temperature: SMART Attributes (190, 194, ...), SCT Status and Device
Statistics. Smartctl could read all, but smartd only checks the attributes.
#804168#19
Date:
2019-10-10 04:18:26 UTC
From:
To:
I observe this very behavior on 7.0:

smartd logs:

  Device: /dev/sdc [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 117 to 116

but according to `smartctl --all /dev/sdc`:

~~~~
smartctl 7.0 2018-12-30 r4883 [x86_64-linux-4.19.0-5-amd64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Red
Device Model:     WDC WD60EFRX-68L0BN1

[...]

Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE

194 Temperature_Celsius     0x0022   116   095   000    Old_age   Always       -       36
~~~~

Package: smartmontools
Version: 7.0-1

Debian Release: 10.1
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