[smartmontools-support] Unknown_Attribute

[Kai M. <ka...@fi...>]

So I set up smartd (lucky me, it looks like) yesterday, and am getting 
some Unknown_Attribute lines. Your FAQ suggests I email you about it. 
I'll be taking care of the failed self-check disk. I'm just curious 
about the unknown attribute changing from 75 to 76 and back. What would 
this value be?

These disks are attached to a 3ware 9650SE-12ML (12 port) card. I have 
the latest drivers for the card as of about 3 weeks ago.


Jul 22 08:32:01 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_00], SMART Prefailure Attribute: 1 Raw_Read_Error_Rate 
changed from 112 to 113
Jul 22 08:32:01 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_00], SMART Usage Attribute: 190 Unknown_Attribute changed 
from 76 to 75
Jul 22 08:32:01 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_00], SMART Usage Attribute: 194 Temperature_Celsius changed 
from 24 to 25
Jul 22 08:32:01 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_00], SMART Usage Attribute: 195 Hardware_ECC_Recovered 
changed from 55 to 56
Jul 22 08:32:01 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_01], FAILED SMART self-check. BACK UP DATA NOW!
Jul 22 08:32:02 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_01], SMART Usage Attribute: 190 Unknown_Attribute changed 
from 76 to 75
Jul 22 08:32:02 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_01], SMART Usage Attribute: 194 Temperature_Celsius changed 
from 24 to 25
Jul 22 08:32:02 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_04], SMART Usage Attribute: 190 Unknown_Attribute changed 
from 76 to 75
Jul 22 08:32:02 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_04], SMART Usage Attribute: 194 Temperature_Celsius changed 
from 24 to 25
Jul 22 08:32:03 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_09], SMART Usage Attribute: 190 Unknown_Attribute changed 
from 76 to 75
Jul 22 08:32:03 r1soft-monster smartd[22662]: Device: /dev/twa0 
[3ware_disk_09], SMART Usage Attribute: 194 Temperature_Celsius changed 
from 24 to 25


I am also curious if anybody knows how to clearly define which 3ware 
disks are which /dev/sd* device? I have 12 identical drives set up in 6 
identical raid-1 arrays for this particular box, and I'd like to verify 
which disks belong to which linux device. I am mostly interested in 
knowing for sure which one is /dev/sda, since that drive has my OS on it 
(for now).

-Kai Meyer