From mboxrd@z Thu Jan 1 00:00:00 1970 From: Justin Piszcz Subject: Re: Software RAID when it works and when it doesn't Date: Sat, 20 Oct 2007 09:55:15 -0400 (EDT) Message-ID: References: <14526.1192571833@mdt.ecitele.com> <87bqaw5tqb.fsf@informatik.uni-tuebingen.de> <1192777672.16416.495.camel@w100> <471A065F.9030202@msgid.tls.msk.ru> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Return-path: In-Reply-To: <471A065F.9030202@msgid.tls.msk.ru> Sender: linux-raid-owner@vger.kernel.org To: Michael Tokarev Cc: Alberto Alonso , Goswin von Brederlow , Mike Accetta , Neil Brown , linux-raid@vger.kernel.org List-Id: linux-raid.ids On Sat, 20 Oct 2007, Michael Tokarev wrote: > There was an idea some years ago about having an additional layer on > between a block device and whatever else is above it (filesystem or > something else), that will just do bad block remapping. Maybe it was > even implemented in LVM or IBM-proposed EVMS (the version that included > in-kernel stuff too, not only the userspace management), but I don't > remember details anymore. In any case, - but again, if memory serves > me right, -- there was low interest in that because of exactly this -- > drives are now more intelligent, there's hardly a notion of "bad block" > anymore, at least persistent bad block, -- at least visible to the > upper layers. > > /mjt > When I run 3dm2 (3ware 3dm2/tools/daemon) I often see LBA remapped sector, success, etc.. My question is, how come I do not see this with mdadm/software raid? Justin.