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Wed, 24 Jan 2024 18:06:23 +0000 Date: Wed, 24 Jan 2024 18:06:21 +0000 (UTC) From: RJ Marquette To: "linux-raid@vger.kernel.org" Message-ID: <2058198167.201827.1706119581305@mail.yahoo.com> In-Reply-To: <006fe0ca-a2fb-4ccd-b4d4-c01945d72661@penguinpee.nl> References: <432300551.863689.1705953121879.ref@mail.yahoo.com> <432300551.863689.1705953121879@mail.yahoo.com> <04757cef-9edf-449a-93ab-a0534a821dc6@thelounge.net> <1085291040.906901.1705961588972@mail.yahoo.com> <0f28b23e-54f2-49ed-9149-87dbe3cffb30@thelounge.net> <598555968.936049.1705968542252@mail.yahoo.com> <755754794.951974.1705974751281@mail.yahoo.com> <20240123110624.1b625180@firefly> <12445908.1094378.1706026572835@mail.yahoo.com> <20240123221935.683eb1eb@firefly> <1979173383.106122.1706098632056@mail.yahoo.com> <006fe0ca-a2fb-4ccd-b4d4-c01945d72661@penguinpee.nl> Subject: Re: Requesting help recovering my array Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Mailer: WebService/1.1.22046 YMailNorrin Other than sdc (as you noted), the other array drives come back like this: root@jackie:/etc/mdadm# mdadm --examine /dev/sda /dev/sda: =C2=A0=C2=A0MBR Magic : aa55 Partition[0] : =C2=A0=C2=A04294967295 sectors at =C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A01 (type ee) root@jackie:/etc/mdadm# mdadm --examine /dev/sda1 mdadm: No md superblock detected on /dev/sda1. Trying your other suggestion: root@jackie:/etc/mdadm# mdadm --assemble /dev/md0 /dev/sdb1 /dev/sde1 /dev/= sdf1 /dev/sdg1 mdadm: no recogniseable superblock on /dev/sdb1 mdadm: /dev/sdb1 has no superblock - assembly aborted root@jackie:/etc/mdadm# mdadm --assemble /dev/md0 /dev/sdb /dev/sde /dev/sd= f /dev/sdg mdadm: Cannot assemble mbr metadata on /dev/sdb mdadm: /dev/sdb has no superblock - assembly aborted Basically I've tried everything here:=C2=A0 https://raid.wiki.kernel.org/in= dex.php/Linux_Raid The impression I'm getting here is that we aren't really sure what the issu= e is.=C2=A0 I think tonight I'll play with some of the BIOS settings and se= e if there's something in there.=C2=A0 If not I'll swap back to the old mot= herboard and see what happens. Thanks. --RJ On Wednesday, January 24, 2024 at 12:06:26 PM EST, Sandro wrote:=20 On 24-01-2024 13:17, RJ Marquette wrote: > When I try the command you suggested below, I get: > root@jackie:/etc/mdadm# mdadm --assemble /dev/md0 /dev/sd{a,b,e,f,g}1 > mdadm: no recogniseable superblock on /dev/sda1 > mdadm: /dev/sda1 has no superblock - assembly aborted Try `mdadm --examine` on every partition / drive that is giving you=20 trouble. Maybe you are remembering things wrong and the raid device is=20 /dev/sda and not /dev/sda1. You can also go through the entire list (/dev/sd*), you posted earlier.=20 There's no harm in running the command. It will look for the superblock=20 and tell you what has been found. This could provide the information you=20 need to assemble the array. Alternatively, leave sda1 out of the assembly and see if mdadm will be=20 able to partially assemble the array. -- Sandro