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From: Andrew Burgess <aab@cichlid.com>
To: Jeremy Sanders <jss@ast.cam.ac.uk>
Cc: linux-raid@vger.kernel.org
Subject: Re: Raid and badblocks
Date: Tue, 26 May 2009 08:27:23 -0700	[thread overview]
Message-ID: <1243351643.11073.29.camel@cichlid.com> (raw)
In-Reply-To: <gvgp32$9se$1@ger.gmane.org>

On Tue, 2009-05-26 at 13:59 +0100, Jeremy Sanders wrote:

> Strangely, the Reallocated_Sector_Ct is still zero on the drive even though 
> Current_Pending_Sector is now zero. This is a Samsung HD103UJ by the way.

That can be ok. It probably tried writing and then rereading and when
that worked it decided the sector didn't really have a 'hard' error
(like a physical defect on the platter) and thus didn't need to be
reallocated to a spare sector. You could generate an unreadable sector
during a write by the power failing or with excessive vibration.

That said, the drive firmware could also be broken


  reply	other threads:[~2009-05-26 15:27 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-22  9:09 Raid and badblocks Jeremy Sanders
2009-05-22  9:19 ` Jeremy Sanders
2009-05-22 11:50   ` NeilBrown
2009-05-26 12:59     ` Jeremy Sanders
2009-05-26 15:27       ` Andrew Burgess [this message]
2009-05-30 10:13         ` hank peng
2009-05-30 13:29           ` John Robinson
2009-05-30 14:21   ` Sujit Karataparambil

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