Kernel driver drivetemp

References

ANS T13/1699-D Information technology - AT Attachment 8 - ATA/ATAPI Command Set (ATA8-ACS)

ANS Project T10/BSR INCITS 513 Information technology - SCSI Primary Commands - 4 (SPC-4)

ANS Project INCITS 557 Information technology - SCSI / ATA Translation - 5 (SAT-5)

Description

This driver supports reporting the temperature of disk and solid state drives with temperature sensors.

If supported, it uses the ATA SCT Command Transport feature to read the current drive temperature and, if available, temperature limits as well as historic minimum and maximum temperatures. If SCT Command Transport is not supported, the driver uses SMART attributes to read the drive temperature.

Sysfs entries

Only the temp1_input attribute is always available. Other attributes are available only if reported by the drive. All temperatures are reported in milli-degrees Celsius.

temp1_input	Current drive temperature
temp1_lcrit	Minimum temperature limit. Operating the device below this temperature may cause physical damage to the device.
temp1_min	Minimum recommended continuous operating limit
temp1_max	Maximum recommended continuous operating temperature
temp1_crit	Maximum temperature limit. Operating the device above this temperature may cause physical damage to the device.
temp1_lowest	Minimum temperature seen this power cycle
temp1_highest	Maximum temperature seen this power cycle