From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jools Wills Subject: Re: Problems with RAID 6 across 15 disks Date: Thu, 01 Apr 2010 23:58:56 +0100 Message-ID: <1270162736.24051.0.camel@travelmate.workshop> References: <4BB49E4D.1090809@maxeaves.co.uk> <4BB4A461.5030704@redhat.com> <4BB4A89F.7030707@maxeaves.co.uk> <20100402074325.3ce34e8f@notabene.brown> <20100401224644.GA2455@lazy.lzy> Reply-To: jools@oxfordinspire.co.uk Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20100401224644.GA2455@lazy.lzy> Sender: linux-raid-owner@vger.kernel.org To: Piergiorgio Sartor Cc: Neil Brown , max@maxeaves.co.uk, linux-raid@vger.kernel.org, Doug Ledford List-Id: linux-raid.ids On Fri, 2010-04-02 at 00:46 +0200, Piergiorgio Sartor wrote: > Hi, > > > However there is real value in doing that check, at least occasionally. It > > catches latent read errors. > > but since it is not possible to correct those errors, > there is no point in doing it... :-) Well it can. It can try and rewrite the block based on the data from the other disks, and if the drive needs to, it can remap the bad block. Best Regards Jools Jools Wills -- IT Consultant Oxford Inspire - http://www.oxfordinspire.co.uk - be inspired t: 01235 519446 m: 07966 577498 jools@oxfordinspire.co.uk