[ILUG] smartd errors

[Gavin McCullagh]

Hi,

I'm not getting too much luck online looking for this so I wonder does
anyone here know.

I installed a new home server recently with two identical seagate disks,
partitions set up with MD RAID1.  I then recently set up smartd to monitor
the disks and logcheck to monitor the logs.  I'm getting very regular
(hourly) logs of the form:

Oct 23 21:06:19 robin smartd[6894]: Device: /dev/hda, SMART Usage Attribute: 195 Hardware_ECC_Recovered changed from 63 to 64
Oct 23 21:06:19 robin smartd[6894]: Device: /dev/hdc, SMART Usage Attribute: 190 Unknown_Attribute changed from 60 to 59
Oct 23 21:06:19 robin smartd[6894]: Device: /dev/hdc, SMART Usage Attribute: 194 Temperature_Celsius changed from 40 to 41
Oct 23 21:06:19 robin smartd[6894]: Device: /dev/hdc, SMART Usage Attribute: 195 Hardware_ECC_Recovered changed from 61 to 62

and I'm not sure whether to worry about them.  For the first time, I've now
seen this:

Oct 24 02:36:19 robin smartd[6894]: Device: /dev/hda, SMART Prefailure Attribute: 7 Seek_Error_Rate changed from 64 to 65

which is a little worrying.  As it's RAID1 I should be able to withstand a
disk failure so I'm not panicking but I'd like to know if I can ignore
any of these (and tell logcheck to do so too) or if they are all telling me
something important.

Does anyone have much knowledge of this stuff?

Gavin