Re: Corsair Force 3 SSD, no temperature sensor

Jonathan Russell wrote:
> Hi,
> I have a fairly large fleet of linux servers (500+) with a few custom
> scripts on them to collect smart data and send it to a back-end database.
> Some of the servers have SSD's that identify as:
>
> Model Family:     SandForce Driven SSDs
> Device Model:     Corsair Force 3 SSD
>
> According to the manufacturer, these drives do not have temperature
> sensors at all.
> Attribute 194 is present in the smart output, (despite being commented
> out normally in the drivedb.h file for this particular drive)
> 194 Temperature_Celsius     0x0022   128   129   000    Old_age
> Always       -       128 (0 127 0 129 0)

Older sandforce drives return 0 if no sensor is available.

> The attribute is always reporting 128, which is causing alerting
> triggers for drive temperature to my administrators.

Could you possibly change the 'alerting' script such that raw values 
above some threshold are interpreted as 'unknown temperature' ?


> I can manually edit the drivedb.h and simply change the value to:
> 194 Ignore_this             0x0022   128   129   000    Old_age
> Always       -       128 (0 127 0 129 0)
> However, this means I can no longer update the drive db, as my changes
> would be destroyed.  Is there a way to cause smartctl to ignore a value,
> or rename it in this case?

Add a custom drivedb entry to local drive database. This file is never 
overwritten on drivedb.h update and should also not be overwritten on 
smartmontools package update.

See -B option on smartctl man page for the distribution specific default 
path (usually /etc/smart_drivedb.h).


> Since these disks do not have temperature sensors, is there a way that
> the master drivedb.h can have a specific entry to ignore this value for
> this drive?

Hmm... we could possibly split the SandForce entry (with, without 
sensor). Unfortunately for most drives I don't have the info whether a 
sensor is present or not (or is optional). Added to my TODO list.

Thanks,
Christian


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