From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ric Wheeler Subject: Re: Some very basic questions Date: Wed, 22 Oct 2008 10:32:11 -0400 Message-ID: <48FF396B.6000000@redhat.com> References: <20081021132322.271ad728.skraw@ithnet.com> <1224597580.27474.93.camel@think.oraclecorp.com> <20081021182710.a12f4914.skraw@ithnet.com> <1224611383.27474.140.camel@think.oraclecorp.com> <20081022141906.f6529c6d.skraw@ithnet.com> <1224683433.6448.36.camel@think.oraclecorp.com> <48FF32DA.2010103@waechter.wiz.at> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Cc: Chris Mason , Stephan von Krawczynski , linux-btrfs@vger.kernel.org To: =?UTF-8?B?TWF0dGhpYXMgV8OkY2h0ZXI=?= Return-path: In-Reply-To: <48FF32DA.2010103@waechter.wiz.at> List-ID: Matthias W=C3=A4chter wrote: > On 10/22/2008 3:50 PM, Chris Mason wrote: > > =20 >> Let me reword my answer ;). The next write will always succeed unle= ss >> the drive is out of remapping sectors. If the drive is out, it is o= nly >> good for reads and holding down paper on your desk. >> =20 > > I have a fairly new SATA disk with about 3000 hours of 24/7 duty > (very light load), 0 remapped sectors and 8 consecutive sectors with > read/write errors. Still, it did not perform remapping facing heavy > writes on the bad sectors. Now what? For whatever reason, remapping > not always works (or mine was produced with a total of zero > remapping sectors=E2=80=A6). > > - Matthias > =20 It sounds like this drive is actually fine, you might have seen some=20 transient issues. Are you positive that the writes went directly to the sectors in=20 question - that should either clear the error or cause it to remap the=20 sectors internally. (Reads will continue to fail). Mark Lord has added some options to hdparm that you might be able to us= e=20 to expressly clear the sectors in question in a more direct way. Regards, Ric -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html