From mboxrd@z Thu Jan 1 00:00:00 1970 From: hank peng Subject: Re: Raid and badblocks Date: Sat, 30 May 2009 18:13:43 +0800 Message-ID: <389deec70905300313v70766bcfmc10bef87ab11c9a8@mail.gmail.com> References: <77f027ed892f0a37b3df63d574ae7955.squirrel@neil.brown.name> <1243351643.11073.29.camel@cichlid.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1243351643.11073.29.camel@cichlid.com> Sender: linux-raid-owner@vger.kernel.org To: Andrew Burgess Cc: Jeremy Sanders , linux-raid@vger.kernel.org List-Id: linux-raid.ids 2009/5/26 Andrew Burgess : > 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 secto= r > during a write by the power failing or with excessive vibration. > I have a question, in this situation, if I do as Jeremy did, write zero to bad block to make drive think it is not bad any more, then what about old data? Isn't it lost? > That said, the drive firmware could also be broken > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =C2=A0http://vger.kernel.org/majordomo-info.ht= ml > --=20 The simplest is not all best but the best is surely the simplest! -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html