linux-kernel - Re: SATA exceptions

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Message-ID: <46928066.7000705@gmail.com>
Date:	Tue, 10 Jul 2007 03:37:26 +0900
From:	Tejun Heo <htejun@...il.com>
To:	caglar@...dus.org.tr
CC:	Robert Hancock <hancockr@...w.ca>,
	LKML <linux-kernel@...r.kernel.org>,
	Jeff Garzik <jgarzik@...ox.com>
Subject: Re: SATA exceptions

Hello,

S.Çağlar Onur wrote:
> 07 Tem 2007 Cts tarihinde, Robert Hancock şunları yazmıştı: 
>> It's not the free space on the drive that matters, it's the number of
>> free sectors in the spare sector pool on the drive, which is invisible
>> to software.
>>
>> Your SMART log shows 309 reallocated sectors. That seems somewhat high..
> 
> Ah sorry to misinterpret the content:), its a quiet new piece of hardware (at 
> most ~1.5 month old) and  "Reallocated_Event_Count" constantly increases 
> (currently its increased to 313) and although i'm not 100 percent sure these 
> errors only occured with kernels > 2.6.18 (or 2.6.18 didn't report these 
> cause according to kern.log these only visible with 2.6.22+) 

OS and driver can't really do much about the reallocation event.  Some
number of reallocations is okay but if you it going up constantly, you
probably have a dying disk.

> We bought 3 HP Pavillon dv2385ea and one of them only runs with 2.6.18 and its 
> smartctl output follows as a reference;
>
>   5 Reallocated_Sector_Ct   0x0033   253   253   010    Pre-fail  
> 196 Reallocated_Event_Count 0x0032   253   253   000    Old_age   

Hmm... This is pretty high too.  Do the counts increase on this machine too?

-- 
tejun
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