[smartmontools-support] WD WD101EFBX drive has insane temperatures?

[Christian Franke]

Ed Trumbull wrote:
> I have a WD 10TB drive connected to a megaraid controller housed on a 
> Supermicro motherboard.
> The system is running the Proxmox VE version 7.2-7 kernel
> (root at kvm-00:~# uname -a
> Linux kvm-00 5.15.39-3-pve #2 SMP PVE 5.15.39-3 (Wed, 27 Jul 2022 
> 13:45:39 +0200) x86_64 GNU/Linux)
>
> This drive has been reporting "peculiar" temperatures to the syslog:
>
> Aug 17 08:19:04 kvm-00 smartd[1401]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], state written to 
> /var/lib/smartmontools/smartd.WDC_WD101EFBX_68B0AN0-VCJ2P3WP.ata.state
> Aug 17 08:25:03 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21], type changed from 'megaraid,21' to 'sat+megaraid,21'
> Aug 17 08:25:03 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], opened
> Aug 17 08:25:03 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], WDC WD101EFBX-68B0AN0, S/N:VCJ2P3WP, 
> WWN:5-000cca-0b0dd670d, FW:85.00A85, 10.0 TB
> Aug 17 08:25:03 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], not found in smartd database.
> Aug 17 08:25:03 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], not capable of SMART Health Status check
> Aug 17 08:25:03 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], no ATA CHECK POWER STATUS support, ignoring 
> -n Directive
> Aug 17 08:25:03 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], is SMART capable. Adding to "monitor" list.
> Aug 17 08:25:03 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], state read from 
> /var/lib/smartmontools/smartd.WDC_WD101EFBX_68B0AN0-VCJ2P3WP.ata.state
> Aug 17 08:25:04 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], state written to 
> /var/lib/smartmontools/smartd.WDC_WD101EFBX_68B0AN0-VCJ2P3WP.ata.state
> Aug 17 08:55:04 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], SMART Usage Attribute: 194 
> Temperature_Celsius changed from 240 to 250
> Aug 17 09:25:04 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], SMART Usage Attribute: 194 
> Temperature_Celsius changed from 250 to 232

This is normal, please see:
https://www.smartmontools.org/wiki/FAQ#Whyismydisktemperaturereportedbysmartdas150Celsius


> Aug 17 09:55:04 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], SMART Usage Attribute: 194 
> Temperature_Celsius changed from 232 to 4
> Aug 17 10:25:04 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], SMART Usage Attribute: 194 
> Temperature_Celsius changed from 4 to 224
> Aug 17 10:55:04 kvm-00 smartd[1389]: Device: /dev/bus/0 
> [megaraid_disk_21] [SAT], SMART Usage Attribute: 194 
> Temperature_Celsius changed from 224 to 4
>

These flipping values look strange. Add '-r 194' to smartd.conf to see 
corresponding raw values (usually temperature in celsius) also.


Regards,
Christian