Red Hat Bugzilla – Bug 202254
Smartmontools temperature is sometimes farenheit
Last modified: 2007-11-30 17:11:40 EST
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:
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