On Tue, 28 Oct 2014 19:06:20 +0100 Hans Kraus <hans@xxxxxxxxxxxxxx> wrote:
> Hi,
>
> I debugged my problem a bit more: it seems that mdadm creates a defect
> superblock. That's repeatedly happening, but only for one drive. I
> copied zeros to that drive (via ddrescue /dev/zero ...) and the drive
> looks OK. The info I got:
>
and you send me the metadata of all your devices please?
mkdir /tmp/dump
mdadm --dump /tmp/dump /dev/sde1
tar czvf /tmp/dump.tgz /tmp/dump
and then send /tmp/dump.tgz
Thanks.
NeilBrown
=================================================================================================================================================================================================
> root@nashorn:/home/kraush/work/smartctrl# mdadm --zero-superblock /dev/sde1
> mdadm: Unrecognised md component device - /dev/sde1
> root@nashorn:/home/kraush/work/smartctrl# mdadm --add /dev/md126 /dev/sde1
> mdadm: add new device failed for /dev/sde1 as 4: Invalid argument
> root@nashorn:/home/kraush/work/smartctrl# mdadm -E /dev/sde1
> /dev/sde1:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : e7caa5d1:b33fd2a5:7782fb0c:9d8d9d5b
> Name : nashorn:126 (local to host nashorn)
> Creation Time : Mon Oct 27 15:58:38 2014
> Raid Level : raid1
> Raid Devices : 2
>
> Avail Dev Size : 1953260976 (931.39 GiB 1000.07 GB)
> Array Size : 0
> Used Dev Size : 0
> Data Offset : 262144 sectors
> Super Offset : 8 sectors
> Unused Space : before=262056 sectors, after=1953260976 sectors
> State : clean
> Device UUID : 4d1420c6:79978477:e86412b1:24beebfc
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Oct 28 11:53:49 2014
> Bad Block Log : 512 entries available at offset 72 sectors
> Checksum : 6f02d040 - expected 891eedff
> Events : 0
>
>
> Device Role : spare
> Array State : RR ('A' == active, '.' == missing, 'R' == replacing)
> root@nashorn:/home/kraush/work/smartctrl#
> -----------------------------------------------------------------------------------------------------------
> root@nashorn:/home/kraush/work/smartctrl# cat /proc/mdstat
> Personalities : [raid1] [raid6] [raid5] [raid4]
> md127 : active (auto-read-only) raid6 sda1[0] sdk1[6](S) sdl2[7](S)
> sdh1[5] sdg1[4] sdf1[3] sdc1[2] sdb1[1]
> 1953017856 blocks super 1.2 level 6, 512k chunk, algorithm 2
> [6/6] [UUUUUU]
> bitmap: 0/4 pages [0KB], 65536KB chunk
>
> md10 : active (auto-read-only) raid1 sdi2[0] sdl3[1]
> 87833408 blocks super 1.2 [2/2] [UU]
> bitmap: 0/1 pages [0KB], 65536KB chunk
>
> md126 : active raid1 sdd1[3] sdj1[2]
> 488254464 blocks super 1.2 [2/2] [UU]
> bitmap: 0/4 pages [0KB], 65536KB chunk
>
> md0 : active raid1 sdl1[4] sdd2[3] sdi1[5]
> 156157824 blocks super 1.2 [3/1] [U__]
> [===================>.] recovery = 95.6% (149290048/156157824)
> finish=8.4min speed=13496K/sec
> bitmap: 1/2 pages [4KB], 65536KB chunk
>
> unused devices: <none>
> root@nashorn:/home/kraush/work/smartctrl#
> -----------------------------------------------------------------------------------------------------------
> dmesg:
> [33299.387382] md: invalid superblock checksum on sde1
> [33299.387385] md: sde1 does not have a valid v1.2 superblock, not
> importing!
> [33299.387408] md: md_import_device returned -22
> root@nashorn:/home/kraush/work/smartctrl#
> -----------------------------------------------------------------------------------------------------------
> root@nashorn:/home/kraush/work/mdadm# mdadm --version
> mdadm - v3.3-161-gfed12d4 - 21st August 2014
> =================================================================================================================================================================================================
>
> Kind regards, Hans
> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
Attachment:
pgpIy5q4qdA85.pgp
Description: OpenPGP digital signature
