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Thu, 25 Jan 2024 15:08:51 +0000 Date: Thu, 25 Jan 2024 15:08:49 +0000 (UTC) From: RJ Marquette To: "linux-raid@vger.kernel.org" Message-ID: <1700056512.428301.1706195329259@mail.yahoo.com> In-Reply-To: References: <432300551.863689.1705953121879.ref@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> <2058198167.201827.1706119581305@mail.yahoo.com> <544664840.269616.1706131905741@mail.yahoo.com> <5112393.323817.1706145196938@mail.yahoo.com> <1822211334.391999.1706183367969@mail.yahoo.com> 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 It's an ext4 RAID5 array.=C2=A0 No LVM, LUKS, etc. You make a good point about the BIOS explanation - it seems to have affecte= d only the 5 RAID drives that had data on them, not the spare, nor the othe= r system drive (and the latter two are both connected to the motherboard).= =C2=A0 How would it have decided to grab exactly those 5? Thanks. --RJ On Thursday, January 25, 2024 at 10:01:40 AM EST, Pascal Hambourg wrote:=20 On 25/01/2024 at 12:49, RJ Marquette wrote: > root@jackie:/home/rj# /sbin/fdisk -l /dev/sdb > Disk /dev/sdb: 2.73 TiB, 3000592982016 bytes, 5860533168 sectors > Disk model: Hitachi HUS72403 > Units: sectors of 1 * 512 =3D 512 bytes > Sector size (logical/physical): 512 bytes / 4096 bytes > I/O size (minimum/optimal): 4096 bytes / 4096 bytes > Disklabel type: gpt > Disk identifier: AF5DC5DE-1404-4F4F-85AF-B5574CD9C627 >=20 > Device =C2=A0=C2=A0=C2=A0=C2=A0Start =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0End =C2=A0=C2=A0=C2=A0Sectors =C2=A0Size Type > /dev/sdb1 =C2=A0=C2=A02048 5860532223 5860530176 =C2=A02.7T Microsoft bas= ic data >=20 > root@jackie:/home/rj# cat /sys/block/sdb/sdb1/start > 2048 > root@jackie:/home/rj# cat /sys/block/sdb/sdb1/size > 5860530176 The partition geometry looks correct, with standard alignment. And the kernel view of the partition matches the partition table. The partition type "Microsoft basic data" is neither "Linux RAID" nor=20 the default type "Linux flesystem" set by usual GNU/Linux partitioning=20 tools such as fdisk, parted and gdisk so it seems unlikely that the=20 partition was created with one of these tools. >>> It looks like this is what happened after all.=C2=A0 I searched for "MB= R >>> Magic aa55" and found someone else with the same issue long ago: >>>=C2=A0https://serverfault.com/questions/580761/is-mdadm-raid-toast=C2=A0= Looks like >>> his was caused by a RAID configuration option in BIOS.=C2=A0 I recall s= eeing >>> that on mine; I must have activated it by accident when setting the boo= t >>> drive or something. I am a bit suspicious about this cause for two reasons: - sde, sdf and sdg are affected even though they are connected to the=20 add-on Marvell SATA controller card which is supposed to be outside the=20 motherboard RAID scope; - sdc is not affected even though it is connected to the onboard Intel=20 SATA controller. What was contents type of the RAID array ? LVM, LUKS, plain filesystem ?