From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Greaves Subject: Re: Bad drive discovered during raid5 reshape Date: Tue, 30 Oct 2007 11:17:57 +0000 Message-ID: <472712E5.10806@dgreaves.com> References: <47258776.9020601@sisna.com> <18214.53051.652280.492087@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <18214.53051.652280.492087@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: Kyle Stuart , linux-raid@vger.kernel.org List-Id: linux-raid.ids Neil Brown wrote: > On Monday October 29, kstuart@sisna.com wrote: >> Hi, >> I bought two new hard drives to expand my raid array today and >> unfortunately one of them appears to be bad. The problem didn't arise > Looks like you are in real trouble. Both the drives seem bad in some > way. If it was just sdc that was failing it would have picked up > after the "-Af", but when it tried, sdb gave errors. Humble enquiry.... :) I'm not sure that's right? He *removed* sdb and sdc when the failure occurred so sdc would indeed be non-fresh. The key question I think is: will md continue to grow an array even if it enters degraded mode during the grow? ie grow from a 6 drive array to a 7-of-8 degraded array? Technically I guess it should be able to. In which case should he be able to re-add /dev/sdc and allow md to retry the grow? (possibly losing some data due to the sdc staleness) David