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From: Christian Gusenbauer <c47g@gmx.at>
To: freebsd-hackers@freebsd.org
Subject: Re: SATA disk disappears
Date: Sat, 12 Jan 2013 09:25:54 +0100
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References: <alpine.BSF.2.00.1301110121060.6708@wojtek.tensor.gdynia.pl>
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Cc: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
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On Friday 11 January 2013 22:47:03 Warren Block wrote:
> On Fri, 11 Jan 2013, Wojciech Puchar wrote:
> >>> GEOM_MIRROR: Component ada2 (device home1) broken, skipping.
> >>> GEOM_MIRROR: Cannot add disk ada2 to home1 (error=22).
> >>> 
> >>> 
> >>> started gmirror rebuild and it now works at full speed.
> >>> 
> >>> GEOM_MIRROR: Device home1: rebuilding provider ada2.
> >>> 
> >>> 
> >>> What kind of hardware failure may it be? smartctl -a /dev/ada2 shows
> >>> disk is fine.
> >> 
> >> I had a new WD drive recently that had a write error.  Reallocated
> >> sector count did not go up, but it quickly failed the SMART self-test,
> >> short or long.  See smartctl(8) about the -t parameters.
> > 
> > this is WD "green" 3TB
> 
> 1T Red here.  The firmware is likely very similar.

The same here: brandnew WD 2T green, 9.1 stable, svn rev. 244773, not using 
GEOM. I had that problem two times within the last two weeks, but the smart 
self tests can not find any errors/bad sectors.

Ciao,
Christian.