From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ankur Bose Subject: Bad Block Management in RAID1 and "Faulty" Date: Mon, 16 Mar 2015 15:04:04 +0530 Message-ID: <5506A38C.3030002@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org Cc: neilb@suse.de List-Id: linux-raid.ids Hi Group , I would like to understand more about bad block management ( esp RAID1 )that given the below link http://neil.brown.name/blog/20100519043730 . Highly appreciate any kind of help. 1) What happens when a write comes on a known bad block ?. 2) When exactly the raid1 decides to make the device "Faulty"? Does that depends on the number of bad blocks in the list ie: 512? Thanks, Ankur