Changes between Version 74 and Version 75 of FAQ


Ignore:
Timestamp:
Apr 8, 2020, 5:57:50 PM (20 months ago)
Author:
Christian Franke
Comment:

Add info about smartd temperature reports

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  • FAQ

    v74 v75  
    6262----
    6363
    64 === Why is my disk temperature s reported by {{{smartd}}} as 150 Celsius? ===
    65 
    66 It's not.  Please read the end of the {{{smartd}}} man page (NOTES).
     64=== Why is my disk temperature reported by `smartd` as 150 Celsius? ===
     65
     66It's not.
    6767For example, in the message:[[BR]]
    6868{{{
    69  Device: /dev/hda, SMART Attribute: 194
    70  Temperature_Celsius changed from 94 to 93
     69Device: /dev/sda, SMART Usage Attribute: 194 Temperature_Celsius changed from 78 to 77
    7170}}}
    7271the value given is the ''Normalized'' not the ''Raw'' Attribute value (the
     
    7574the information is printed with the ''Raw'' values as well, for example:
    7675{{{
    77  Device: /dev/hda, SMART Attribute: 194
    78  Temperature_Celsius changed from 94 [Raw 22] to 93 [Raw 23]
    79 }}}
    80 Here the Raw values are the actual disk temperatures in Celsius.  The
    81 way in which the Raw values are printed, and the names under which the
    82 Attributes are reported, is governed by the various
    83 {{{'-v Num,Description'}}} Directives described in the {{{smartd}}}
    84 man page. Please see the {{{smartctl}}} manual page for further
    85 explanation of the differences between ''Normalized'' and ''Raw'' Attribute values.
     76Device: /dev/sda, SMART Usage Attribute: 194 Temperature_Celsius changed from 78 [Raw 22] to 77 [Raw 23]
     77}}}
     78Here the Raw values are the actual disk temperatures in Celsius.
     79Please see the {{{smartctl}}} manual page for further explanation of the differences between ''Normalized'' and ''Raw'' Attribute values.
     80
     81Alternatively suppress these messages with `-I` and enable temperature reports and/or warnings with `-W` directive.
     82For example this `smartd.conf` setting:
     83{{{
     84/dev/sda -a -I 190 -I 194 -W 1,45,50 -m ADDRESS
     85}}}
     86would result in messages like:
     87{{{
     88Device: /dev/sda, Temperature changed +1 Celsius to 23 Celsius (Min/Max 20/38)
     89Device: /dev/sda, Temperature 48 Celsius reached limit of 45 Celsius (Min/Max 20/48!)
     90Device: /dev/sda, Temperature 52 Celsius reached critical limit of 50 Celsius (Min/Max 20/52!)
     91}}}
     92The last message would also be sent as a warning email to ADDRESS.
    8693
    8794----