From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Robinson Subject: Re: Hello,Re: GPT Table broken on a Raid1 Date: Tue, 25 Sep 2012 10:28:34 +0100 Message-ID: <50617942.4070707@anonymous.org.uk> References: <4961154.0TR9MeFlIq@techz> <2286535.1cCOBDZvYY@techz> <505B736A-B9FE-4DB5-BA22-FEFDF1F9EE47@colorremedies.com> <5231765.ZMIFzBOKSc@techz> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <5231765.ZMIFzBOKSc@techz> Sender: linux-raid-owner@vger.kernel.org To: =?ISO-8859-1?Q?=22G=FCnther_J=2E_Niederwimmer=22?= Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 25/09/2012 09:27, G=FCnther J. Niederwimmer wrote: > Am Montag, 24. September 2012, 15:12:22 schrieb Chris Murphy: >> On Sep 24, 2012, at 3:06 PM, G=FCnther J. Niederwimmer wrote: [...] >>> Question: Why create mdadm also a md127, I found this now ? >> >> Kernel is mapping /dev/md/Volume0 to /dev/md126. It's doing the same= on my >> system, although it's using md126. Not sure if that's controllable o= r not. >> Maybe someone else can answer it. > > No Problem, but i tell it to you, for me it is mystery. ;) It's the way IMSM works. You have md127 which is a "container",=20 essentially spanning all the discs concerned. That container holds one=20 or more RAID sets. You have md126 aka Volume0 as a RAID-1 set that fill= s=20 the container, but you could have more than one RAID set, e.g. you coul= d=20 have a RAID-1 as md126 and a RAID-10 as md125. Cheers, John. -- 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