From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tim Small Subject: Re: Fault tolerance with badblocks Date: Tue, 9 May 2017 13:15:46 +0100 Message-ID: <7dfa3eff-9194-002d-918b-42fbae865df3@buttersideup.com> References: <03294ec0-2df0-8c1c-dd98-2e9e5efb6f4f@hale.ee> <590B3039.3060000@youngman.org.uk> <84184eb3-52c4-e7ad-cd5b-5021b5cf47ee@hale.ee> <590DC905.60207@youngman.org.uk> <87h90v8kt3.fsf@esperi.org.uk> <591171BD.3060707@hesbynett.no> <87efvy73n9.fsf@esperi.org.uk> <9306fd68-4eeb-f487-a500-27050050af98@fnarfbargle.com> <87wp9q5n49.fsf@esperi.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <87wp9q5n49.fsf@esperi.org.uk> Sender: linux-raid-owner@vger.kernel.org To: Nix Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 09/05/17 11:40, Nix wrote: > I've had disk failures without warning, and > non-failed disks with both read and write errors that would not go away, > but that SMART reallocation value just stayed stuck at zero through all > of it. Really? I see them pretty frequently... Let's see server1, RAID6 (4 disks), reallocated_sector_ct: 0 9 1 0 server2, RAID5 (4 disks), reallocated_sector_ct: 0 0 0 0 server3, RAID6 (5 disks), reallocated_sector_ct: 34 754 15 115 1 server4, RAID5 (4 disks), reallocated_sector_ct: 0 0 0 0 server5, RAID5 (4 disks), reallocated_sector_ct: 0 0 0 0 Disk 2 in server3 (which has drives which are a bit long in the tooth) is scheduled to be replaced next time I visit that site. Are you looking at the 'raw' column in the smartctl output? Tim