Public bug reported:
I added new SATA-card to my system, and new, empty 1T disk on it. I can
partition drive, badblock -vw runs fine, etc.
But adding partitions as spare to raid arrays doesn't work. When trying dozen's
of times adding and zeroing raid superblock finally adding to array as spare
may success, but most commonly it goes like below. On other system with same
software everything works.
------ typescript (edited ctrl-codes away, hopefully no mistakes)
---------------
r...@hermo:~# mdadm --zero-superblock /dev/sda3
r...@hermo:~# mdadm --zero-superblock /dev/sda3
mdadm: Unrecognised md component device - /dev/sda3
r...@hermo:~# mdadm --examine /dev/sda3
mdadm: No md superblock detected on /dev/sda3.
r...@hermo:~# mdadm /dev/md1 -a /dev/sda3
mdadm: add new device failed for /dev/sda3 as 2: Invalid argument
r...@hermo:~# dmesg | tail -3
[63629.203016] md: invalid superblock checksum on sda3
[63629.203029] md: sda3 does not have a valid v0.90 superblock, not importing!
[63629.203039] md: md_import_device returned -22
r...@hermo:~# mdadm --examine /dev/sda3
/dev/sda3:
Magic : a92b4efc
Version : 00.90.00
UUID : 648a7995:c3388f0f:019f6ea3:9eae676e
Creation Time : Sun Mar 28 09:38:44 2004
Raid Level : raid1
Used Dev Size : 19237760 (18.35 GiB 19.70 GB)
Array Size : 19237760 (18.35 GiB 19.70 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Update Time : Fri Oct 9 10:39:02 2009
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Checksum : fd971688 - expected fd97167c
Events : 0.116
Number Major Minor RaidDevice State
this 2 8 3 -1 spare /dev/sda3
0 0 8 51 0 active sync /dev/sdd3
1 1 8 19 1 active sync /dev/sdb3
r...@hermo:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4]
[raid10]
md3 : active raid1 sdb6[0] sdc6[1]
244187904 blocks [2/2] [UU]
md2 : active raid5 sda5[3](S) sdb5[0] sdd5[2] sdc5[1]
410267776 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md1 : active raid1 sdd3[0] sdb3[1]
19237760 blocks [2/2] [UU]
md0 : active raid1 sda2[2](S) sdd2[0] sdb2[1]
19534976 blocks [2/2] [UU]
unused devices: <none>
r...@hermo:~# dpkg -l linux-image-2.6.24-24-server
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-f/Unpacked/Failed-cfg/Half-inst/t-aWait/T-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name Version Description
+++-==============-==============-============================================
ii linux-image-2. 2.6.24-24.61 Linux kernel image for version 2.6.24 on x86
r...@hermo:~# uname -a
Linux hermo 2.6.24-24-server #1 SMP Fri Sep 18 17:24:10 UTC 2009 i686 GNU/Linux
r...@hermo:~# mdadm /dev/md1 -a /dev/sda3
mdadm: add new device failed for /dev/sda3 as 2: Invalid argument
r...@hermo:~# dmesg | tail -3
[63692.616424] md: invalid superblock checksum on sda3
[63692.616436] md: sda3 does not have a valid v0.90 superblock, not importing!
[63692.616444] md: md_import_device returned -22
r...@hermo:~# mdadm /dev/md1
/dev/md1: 18.35GiB raid1 2 devices, 0 spares. Use mdadm --detail for more
detail.
r...@hermo:~# mdadm --detail /dev/md1
/dev/md1:
Version : 00.90.03
Creation Time : Sun Mar 28 09:38:44 2004
Raid Level : raid1
Array Size : 19237760 (18.35 GiB 19.70 GB)
Used Dev Size : 19237760 (18.35 GiB 19.70 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Fri Oct 9 10:39:02 2009
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 648a7995:c3388f0f:019f6ea3:9eae676e
Events : 0.116
Number Major Minor RaidDevice State
0 8 51 0 active sync /dev/sdd3
1 8 19 1 active sync /dev/sdb3
ProblemType: Bug
Architecture: i386
Date: Fri Oct 9 11:32:46 2009
DistroRelease: Ubuntu 8.04
Package: mdadm 2.6.3+200709292116+4450e59-3ubuntu3.1
PackageArchitecture: i386
ProcEnviron:
SHELL=/bin/bash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
LANG=en_US.UTF-8
LC_CTYPE=fi_FI.ISO8859-1
SourcePackage: mdadm
Uname: Linux 2.6.24-24-server i686
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: apport-bug
--
'md: invalid superblock checksum' when adding empty device to raid
https://bugs.launchpad.net/bugs/447059
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