From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: BUG: possible array corruption when adding a component to a degraded raid5 (possibly other levels too) Date: Mon, 28 Jan 2008 22:34:49 +1100 Message-ID: <18333.48601.218262.452373@notabene.brown> References: <479DA8E6.6040209@rabbit.us> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: message from Peter Rabbitson on Monday January 28 Sender: linux-raid-owner@vger.kernel.org To: Peter Rabbitson Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Monday January 28, rabbit+list@rabbit.us wrote: > Hello, > > It seems that mdadm/md do not perform proper sanity checks before adding a > component to a degraded array. If the size of the new component is just right, > the superblock information will overlap with the data area. This will happen > without any error indications in the syslog or otherwise. I thought I fixed that.... What versions of Linux kernel and mdadm are you using for your tests? Thanks, NeilBrown