From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: addingdrive to raid 1 Date: Mon, 26 Mar 2007 21:17:34 +1000 Message-ID: <17927.43982.475535.846718@notabene.brown> References: <46061A61.7030806@stanford.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: message from Robert Stanford on Sunday March 25 Sender: linux-raid-owner@vger.kernel.org To: Robert Stanford Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Sunday March 25, rob@stanford.com.au wrote: > Hi All, Long time Linux software raid user, first real problem. > > I built md2 with 1 missing drive and am now trying to add a drive (hda4) > > The partition that is hda4 was previously part of another raid array > md1 that no longer exists. > > I have zeroed the superblock in hda4, however when I try to add it it > sync's instantly, no rebuild. > > The original raid array md1 is several years old and was built with the > old raidtools package. > > I even ran > dd if=/dev/zero of=/dev/hda4 > just to be sure that nothing was left on the partition from the previous > raid setup and still no joy. > > Any help would be appreciated You didn't say what kernel version. I'd guess 2.6.18. You want 2.6.18.2 or later to fix this problem. NeilBrown