Hi
I have now set my RAID1 but if I use :
[root@muckla root]# mdadm -E /dev/md0
mdadm: No super block found on /dev/md0 (Expected magic a92b4efc, got
00000000)
[root@muckla root]# mdadm -E /dev/md1
mdadm: No super block found on /dev/md1 (Expected magic a92b4efc, got
00000000)
[root@muckla root]# mdadm -E /dev/md2
mdadm: No super block found on /dev/md2 (Expected magic a92b4efc, got
139d47d7)
[root@muckla root]#
What does it mean ?. I think my raid running well.
Here the output of lsraid for md0:
[root@muckla root]# lsraid -a /dev/md0
[dev 9, 0] /dev/md0 1628B05F.8E582771.6BC25A99.B080AB1F
online
[dev 3, 1] /dev/hda1 1628B05F.8E582771.6BC25A99.B080AB1F good
[dev 22, 1] /dev/hdc1 1628B05F.8E582771.6BC25A99.B080AB1F good
If I do an query with mdadm I get :
[root@muckla root]# mdadm -Q --detail /dev/md0
/dev/md0:
Version : 00.90.00
Creation Time : Sun May 2 21:53:46 2004
Raid Level : raid1
Array Size : 4882624 (4.66 GiB 4.100 GB)
Device Size : 4882624 (4.66 GiB 4.100 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon May 3 05:49:54 2004
State : dirty, no-errors
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Number Major Minor RaidDevice State
0 3 1 0 active sync /dev/hda1
1 22 1 1 active sync /dev/hdc1
UUID : 1628b05f:8e582771:6bc25a99:b080ab1f
Events : 0.13
[root@muckla root]#
Is the state dirty a problem ? I have nothing found in the man page of
mdadm.
Here some additional information about the disks.....
fdisk looks good I set the type to fd
[root@muckla root]# fdisk -l /dev/hda
Disk /dev/hda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 1 608 4883728+ fd Linux raid autodetect
/dev/hda2 609 1094 3903795 fd Linux raid autodetect
/dev/hda3 1095 9729 69360637+ fd Linux raid autodetect
[root@muckla root]# fdisk -l /dev/hdc
Disk /dev/hdc: 80.0 GB, 80026361856 bytes
16 heads, 63 sectors/track, 155061 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Device Boot Start End Blocks Id System
/dev/hdc1 1 9688 4882720+ fd Linux raid autodetect
/dev/hdc2 9689 17438 3906000 fd Linux raid autodetect
/dev/hdc3 17439 155061 69361992 fd Linux raid autodetect
Here my /etc/raidtab:
[root@muckla root]# cat /etc/raidtab
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 4
persistent-superblock 1
device /dev/hda1
raid-disk 0
device /dev/hdc1
raid-disk 1
raiddev /dev/md1
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 4
persistent-superblock 1
device /dev/hda2
raid-disk 0
device /dev/hdc2
raid-disk 1
raiddev /dev/md2
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 4
persistent-superblock 1
device /dev/hda3
raid-disk 0
device /dev/hdc3
raid-disk 1
Sorry a lot of questions.
Has anybody got the same problems or is it not a problem ?
BTW: I am running a smp kernel: Linux muckla 2.4.21-9.0.1.EL.um.3smp #1
SMP Thu Apr 22 12:46:27 JST 2004 i686 i686 i386 GNU/Linux
Is this the problem.
Thanks for any hint
Reinhard
