Bug 202254 - Smartmontools temperature is sometimes farenheit
Summary: Smartmontools temperature is sometimes farenheit
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: smartmontools
Version: 5
Hardware: i686
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Tomas Mraz
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2006-08-11 19:53 UTC by Nicolai Langfeldt
Modified: 2007-11-30 22:11 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2006-08-21 12:48:24 UTC
Type: ---
Embargoed:


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Description Nicolai Langfeldt 2006-08-11 19:53:47 UTC
Description of problem:

Some disks (at least?) gets smartctl to report their temperature in Farenheit
not Celcius.

Version-Release number of selected component (if applicable):
smartmontools-5.36-fc5.1

How reproducible:
Always with the correct disks.  I suspect it's a feature of the firmware - or
the interaction with smartmontools:
- Model Family:     Western Digital Caviar SE (Serial ATA) family
  Device Model:     WDC WD2500JD-00FYB0
- Device Model:     SAMSUNG HD401LJ

Steps to Reproduce:
1.  # smartctl -d ata -a /dev/sdb
...
194 Temperature_Celsius     0x0022   119   253   000    Old_age   Always       -
      31

2. # smartctl -F samsung2 -d ata -a /dev/sdc

...
194 Temperature_Celsius     0x0022   145   121   000    Old_age   Always       -
      31

Actual results:

The temperatures does not esp. make sense as C+100, but pretty good sence as
Farenheit temperatures.  The first disk is in a cool cabinet, the second one in
a somewhat denser array.

Expected results:


Additional info:

Comment 1 Tomas Mraz 2006-08-21 12:48:24 UTC
The Temperature_Celsius value is actually the last number on the line - the
value 31 which could theoretically make sense although it seems a little bit too
low to me. The values 119 an 145 are 'magic numbers' which can mean basically
anything.

See http://smartmontools.sourceforge.net/#FAQ



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