From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Leslie Rhorer" Subject: RE: Growing a RAID array Date: Sat, 14 May 2011 09:43:36 -0500 Message-ID: <8F.2D.17273.3159ECD4@cdptpa-omtalb.mail.rr.com> References: <20110514181455.7e97e755@notabene.brown> Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20110514181455.7e97e755@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: 'NeilBrown' Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids > 10Meg devices with a 1Meg chunk size means just 10 stripes. > > To grow from 4 to 5 data disks it calculates that it needs to back up the > first 20 stripes (I think). It sees this is more than half the device and > gets confused and assumes something is wrong. > > Try with 4k chunks, or 100Meg devices. Silly machine. :-) 'Works like a champ, thanks. No errors, and the process completes in the blink of an eye. Now if growing an array with 3T spindles were only that fast...