linux-kernel - Re: SATA exceptions

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Message-ID: <4695114F.1010206@tmr.com>
Date:	Wed, 11 Jul 2007 13:20:15 -0400
From:	Bill Davidsen <davidsen@....com>
To:	Tejun Heo <htejun@...il.com>
CC:	caglar@...dus.org.tr, Robert Hancock <hancockr@...w.ca>,
	LKML <linux-kernel@...r.kernel.org>,
	Jeff Garzik <jgarzik@...ox.com>
Subject: Re: SATA exceptions

Tejun Heo wrote:
> 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.
> 
Or, as I learned the hard way, if you have the problem on all drives 
sharing a power supply, a power issue.

>> 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?
> 


-- 
Bill Davidsen <davidsen@....com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot

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