mdadm --detail XXX gives strange output for raid1 (doble disk space as it should be)
 

Hello

I have a problem with raid1.
I have 4 raid partitions were I have rearranged the disk partitions.
I have removed raid config, array etc. of 2 arrays, partitioned the disk at the beginning to rearrange and created the 2 arrays again with yast and opensuse 10.3
Now one array (md0) shows me the Used Dev Size 18.63GB and Array Size 9.31GB
but I use raid1 not raid0 and the fs details of the "normal" partitions shows the right sizes (9.31GB)...
I have already created and formated again the md0 but still the same problem.
Mounted the /dev/md0 it shows the right space but I really don't trust this.
And this will be my new / filesytem so I want to be shure that it will be right.
BTW: All raid arrays were created with suse 9.0 this 2 new ones with opensuse 10.3 ...
The version from mdadm --detail /dev/mdX says:
old one: 00.90.03
new one: 01.00.03
What could this be? Any idea?
What can I do?
Here the output of the good one and bad one raid arrays ...

Greetings

Beat

Info of newly created /dev/md0 (Bad one)
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###### /dev/md0 infos

gw1:~ # mdadm --detail /dev/md0
/dev/md0:
Version : 01.00.03
Creation Time : Fri Oct 24 12:26:34 2008
Raid Level : raid1
Array Size : 9767416 (9.31 GiB 10.00 GB)
Used Dev Size : 19534832 (18.63 GiB 20.00 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent

Intent Bitmap : Internal

Update Time : Fri Oct 24 12:29:52 2008
State : active
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0

Name : 0
UUID : fc1cbc64:d9dec569:023063e5:e847ffbc
Events : 5

Number Major Minor RaidDevice State
0 8 7 0 active sync /dev/sda7
1 8 23 1 active sync /dev/sdb7

###### /dev/sda7 infos

gw1:~ # mdadm -E /dev/sda7
/dev/sda7:
Magic : a92b4efc
Version : 01
Feature Map : 0x1
Array UUID : fc1cbc64:d9dec569:023063e5:e847ffbc
Name : 0
Creation Time : Fri Oct 24 12:26:34 2008
Raid Level : raid1
Raid Devices : 2

Used Dev Size : 19534832 (9.31 GiB 10.00 GB)
Array Size : 19534832 (9.31 GiB 10.00 GB)
Super Offset : 19534960 sectors
State : active
Device UUID : eacbc428:29e67ecb:d0151ce3:59e1d742

Internal Bitmap : -76 sectors from superblock
Update Time : Fri Oct 24 12:29:52 2008
Checksum : c9ca60b5 - correct
Events : 5


Array Slot : 0 (0, 1)
Array State : Uu

###### /dev/sdb7 infos

gw1:~ # mdadm -E /dev/sdb7
/dev/sdb7:
Magic : a92b4efc
Version : 01
Feature Map : 0x1
Array UUID : fc1cbc64:d9dec569:023063e5:e847ffbc
Name : 0
Creation Time : Fri Oct 24 12:26:34 2008
Raid Level : raid1
Raid Devices : 2

Used Dev Size : 19534832 (9.31 GiB 10.00 GB)
Array Size : 19534832 (9.31 GiB 10.00 GB)
Super Offset : 19534960 sectors
State : active
Device UUID : a2058e71:10517059:f5a082bd:ae00a2f0

Internal Bitmap : -76 sectors from superblock
Update Time : Fri Oct 24 12:29:52 2008
Checksum : 28b5afd0 - correct
Events : 5


Array Slot : 1 (0, 1)
Array State : uU

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Info of newly created /dev/md4 (Good one)
Output of /proc/mdstat