[smartmontools-support] smartctl / Airflow_Temperature_Cel, In_the_past-values

[Christian Franke]

Robert Gruber wrote:
> I have a Seagate Barracuda XT ST33000651AS and during a malfunction of a
> fan which was in the mean while solved I got these values now:
>
> ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED
> WHEN_FAILED RAW_VALUE
> 190 Airflow_Temperature_Cel 0x0022   062   043   045    Old_age   Always
> In_the_past 38 (0 84 40 38 0)
>
> State before:
> ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED
> WHEN_FAILED RAW_VALUE
> 190 Airflow_Temperature_Cel 0x0022   052   052   045    Old_age   Always
>      -       48 (Min/Max 23/48)
>
> I understand these values but can not find any help under man pages for
> the values in the brackets (next to In_the_past).

Smartctl uses a heuristics to detect some known min/max temperature 
encodings from the 48-bit raw value. None of these matched in the "now" 
case above. The raw bytes are printed instead.

> Can anybody tell me what meaning they have ?

Someone at Seagate possibly can :-)

The "84" may be "time (minutes?) in over temperature".

Thanks,
Christian