[CentOS] smartmontools

m.roth at 5-cent.us m.roth at 5-cent.us
Tue Nov 3 18:48:43 UTC 2009


Hi, Corey,

> m.roth at 5-cent.us wrote:
>> I'm in the process of rolling out the upgrade from (mostly) 5.3 to 5.4.
>> One of my servers started throwing the following:
>> Nov  1 05:22:51 <server> kernel:  target4:0:0: FAST-80 WIDE SCSI 160.0
>> MB/s DT (12.5 ns, offset 62)
>> Nov  1 05:22:51 <server> kernel:  target4:0:1: FAST-80 WIDE SCSI 160.0
>> MB/s DT (12.5 ns, offset 62)
>>
>> into my logs every half hour. I don't see anything resembling an error
>> message. The only thing I noted while googling was everyone else spoke
>> of "...ns, offset 127", but I have no clue if that's relevant to
>> anything. The smartd.conf is the default. I'm not running the debug
kernel.
>>
>> Does anyone have any idea why it's doing this, and, if it's not
>> important, how to get it to stop cluttering my logs?
>>
> What do you see when you run a smartctl -a $DEVICE on the drive that's
> choking?

Wasn't sure if I should run it on /dev/sdx, or /dev/sdx[#]. I did both, on
all three drives, and no errors showing anywhere - the latter two (on
/dev/sdb and /dev/sdc) show no uncorrected errors, and no errors corrected
by ECC. /dev/sda gives me a lot more output, but says no errors logged.

I don't really understand why sda gives so much more info, nor do I
understand the o/p at the beginning. The headers for the second section
read:
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED 
WHEN_FAILED RAW_VALUE

and there are numbers under RAW_VALUE, but are those the values of the
manufacturer's limits? Certainly, there is nothing but dashes under
WHEN_FAILED.

Do you need more info?

       mark



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