From mboxrd@z Thu Jan 1 00:00:00 1970 From: hpa@zytor.com (H. Peter Anvin) Subject: Re: raid6 raidreconf progress Date: Tue, 4 May 2004 20:18:51 +0000 (UTC) Sender: linux-raid-owner@vger.kernel.org Message-ID: References: <4087C14D.6030605@wasp.net.au> <4087DC41.8060206@wasp.net.au> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Followup to: <4087DC41.8060206@wasp.net.au> By author: Brad Campbell In newsgroup: linux.dev.raid > > Brad Campbell wrote: > > G'day all, > > > > I'm currently adding raid6 support to raidreconf, and as part of my > > testing I'm doing all sorts of > > nasty things to a 200GB usb2 hard disk. > > Ok, false alarm (sort of, I'm still interested in what happens with odd device sizes), but it was a > thinko in the raid6 parity block locator. In the kernel or in raidreconf? > We have liftoff. It has now performed 2 raid5->raid6 and back again cycles. > I test it by using dd to dump 400mb of /dev/urandom to the device and then running md5sum on it, so > far we have 4 complete cycles to differing devices in different orders and different sizes (As long > as it stays above 400MB of course) and it's all good. > Hope to have something cleaned up and presentable in the near future. Kick ass. -hpa