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SubjectRe: Lots of con-current I/O = resets SATA link? (2.6.25.10)
Hello!

BTW:
The error in syslog also accoured when Reallocated_Sector_Ct didn't go up.

Ciao,
Gerhard

--
http://www.wiesinger.com/


On Tue, 8 Jul 2008, Gerhard Wiesinger wrote:

> On Mon, 7 Jul 2008, Justin Piszcz wrote:
>
>> Hi Gerhard,
>>
>> It /could/ be the port itself if you have changed the cable and disk..
>>
>
> Yes, but it is very unlikely. I have written TB of data there without any
> problems. Anyway this is my 3rd exchanged SAMSUNG disk ...
>
>
>> Have you tried loading the disk with dd and seeing if you can reproduce the
>> problem? You are getting the same error I get generally, I can recommend
>> turning OFF NCQ first and see if the problem goes away.
>>
>> # Define DISKS.
>> cd /sys/block
>> DISKS=$(/bin/ls -1d sd[a-z])
>>
>> # Disable NCQ on all disks.
>> echo "Disabling NCQ on all disks..."
>> for i in $DISKS
>> do
>> echo "Disabling NCQ on $i"
>> echo 1 > /sys/block/"$i"/device/queue_depth
>> done
>>
>
> I tried to disable NCQ on all disks and tried to rebuild the raid, but it
> still failed to rebuild with the same error message.
>
> I also tried the nolapic kernel parameter without success.
>
> /dev/sda: 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail
> Always - 0
> /dev/sdb: 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail
> Always - 0
> /dev/sdc: 5 Reallocated_Sector_Ct 0x0033 091 091 010 Pre-fail
> Always - 413
> /dev/sdd: 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail
> Always - 0
> /dev/sde: 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail
> Always - 0
> /dev/sdf: 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail
> Always - 0
>
> The only thing is that the Reallocated_Sector_Ct is still >0 on /dev/sdc
> (keep in mind this is my 3rd new Samsung disk on /dev/sdc and I had up to
> 3000 Reallocated_Sector_Ct on previous disks in < 1 day !!!).
>
> Should I replace the disk a fourth time?
>
> When you search in google you find a lot of threads with the timeout problem.
> Might this be a software issue?
>


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