linux-kernel - Re: SATA exceptions

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Message-Id: <200707131044.20466.caglar@pardus.org.tr>
Date:	Fri, 13 Jul 2007 10:44:11 +0300
From:	"S.Çağlar Onur" <caglar@...dus.org.tr>
To:	Tejun Heo <htejun@...il.com>
Cc:	Pavel Machek <pavel@....cz>, Robert Hancock <hancockr@...w.ca>,
	LKML <linux-kernel@...r.kernel.org>,
	Jeff Garzik <jgarzik@...ox.com>
Subject: Re: SATA exceptions

13 Tem 2007 Cum tarihinde, Tejun Heo şunları yazmıştı: 
> >> 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.
> >
> > Hmm... cut the power while writing is doable from OS and might force
> > reallocations?
>
> Hmmm... We don't have any pending write when power goes out and I don't
> emergency unload can directly increase reallocation count.  It can
> shorten lifespan of the head tho.
>
> > You might want to check if number of reallocated sectors increases
> > with shutdowns/reboots.
>
> I'm curious too.

It seems reboot/shutdown has no effect on reallocated sectors. After 5 rebot/5 
shutdown it didn't change at all.

zangetsu ~ # smartctl -a /dev/sda | grep Reall
  5 Reallocated_Sector_Ct   0x0033   067   067   010    Pre-fail  
Always       -       314
196 Reallocated_Event_Count 0x0032   067   067   000    Old_age   
Always       -       314

Cheers
-- 
S.Çağlar Onur <caglar@...dus.org.tr>
http://cekirdek.pardus.org.tr/~caglar/

Linux is like living in a teepee. No Windows, no Gates and an Apache in house!

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