From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Robinson Subject: Re: 4x3TB raid5 - no autodetect Date: Mon, 22 Oct 2012 15:11:11 +0100 Message-ID: <508553FF.6020302@anonymous.org.uk> References: <441614417.20121022155507@oudeis.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <441614417.20121022155507@oudeis.org> Sender: linux-raid-owner@vger.kernel.org To: =?ISO-8859-1?Q?Rainer_F=FCgenstein?= Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 22/10/2012 14:55, Rainer F=FCgenstein wrote: > I'm trying to create a RAID5 consisting of 4 3TB drives from scratch: [...] > - raid created using: > # mdadm --create /dev/md0 --level=3D5 --metadata=3D1.2 --raid-devices= =3D4 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 > before that the raid was created without "--metadata=3D1.2", also did= n't > work. > > - on boot, dmesg says: > md: Autodetecting RAID arrays. > md: invalid raid superblock magic on sdb1 > md: sdb1 has invalid sb, not importing! > md: invalid raid superblock magic on sdc1 > md: sdc1 has invalid sb, not importing! > md: invalid raid superblock magic on sdd1 > md: sdd1 has invalid sb, not importing! > md: invalid raid superblock magic on sde1 > md: sde1 has invalid sb, not importing! > md: autorun ... > md: ... autorun DONE. [...] > > there's something I'm missing here - please advise. In-kernel auto-assembly is only supported for metadata 0.90, and even=20 then the feature is deprecated. If you have your root filesystem on a m= d=20 array, use an initrd with mdadm in it to start it. 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