From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Rabbitson Subject: Re: In this partition scheme, grub does not find md information? Date: Wed, 30 Jan 2008 16:35:27 +0100 Message-ID: <47A0993F.8000005@rabbit.us> References: <479F07E1.7060408@pobox.com> <479F0AAB.3090702@rabbit.us> <479F331F.7080902@msgid.tls.msk.ru> <479F3C74.1050605@rabbit.us> <479F42A5.8040007@msgid.tls.msk.ru> <20080129162640.GA16250@rap.rap.dk> <479F5882.8050400@msgid.tls.msk.ru> <20080129180101.GB19527@rap.rap.dk> <47A07D95.2030902@msgid.tls.msk.ru> <47A08E02.3000009@rabbit.us> <20080130152156.GA22131@rap.rap.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20080130152156.GA22131@rap.rap.dk> Sender: linux-raid-owner@vger.kernel.org To: =?UTF-8?B?S2VsZCBKw7hybiBTaW1vbnNlbg==?= Cc: Michael Tokarev , Moshe Yudkowsky , linux-raid@vger.kernel.org List-Id: linux-raid.ids Keld J=C3=B8rn Simonsen wrote: > On Wed, Jan 30, 2008 at 03:47:30PM +0100, Peter Rabbitson wrote: >> Michael Tokarev wrote: >> >>> With 5-drive linux raid10: >>> >>> A B C D E >>> 0 0 1 1 2 >>> 2 3 3 4 4 >>> 5 5 6 6 7 >>> 7 8 8 9 9 >>> 10 10 11 11 12 >>> ... >>> >>> A&B can't be removed - 0, 5. A&C CAN be removed, as >>> are A&D. But not A&E - losing 2 and 7. And so on. >=20 > I see. Does the kernel code allow this? And mdadm? >=20 > And can B+E be removed safely, and C+E and B+D?=20 >=20 It seems like it. I just created the above raid configuration with 5 lo= op=20 devices. Everything behaved just like Michael described. When the wrong= drives=20 disappeared - I started getting IO errors. - To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html