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Hi,
I trying to setup a raid0 without success, using the mdadm 2.3.1
package, compiled from sources.
No matters if its linear or stripping raid0 mode, the errors are the same:
master# mdadm --create --verbose /dev/md0 --level=0 --raid-devices=2
/dev/sda2 /dev/sda3
master:~# mdadm -E /dev/md0
mdadm: No md superblock detected on /dev/md0.
I made a lot's of tests with this, trying to recriate, but without sucess.
The strange thing is that the Raid is running:
master:~# mdadm -Q -D /dev/md0
/dev/md0:
Version : 00.90.01
Creation Time : Fri Feb 17 19:35:21 2006
Raid Level : raid0
Array Size : 1052096 (1027.61 MiB 1077.35 MB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Fri Feb 17 19:35:21 2006
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Chunk Size : 64K
UUID : ad53c04e:73590c3f:8ea811aa:f81097e1
Events : 0.1
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 8 3 1 active sync /dev/sda3
But I cant mount the device:
mount: wrong fs type, bad option, bad superblock on /dev/md0,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
I'm using a Debian Sarge box, updated, but with mdadm compiled from
sources. With Debian binaries, the same error occours.
Kernel 2.6.8-2-686
Tested with ubuntu 5.10, kernel 2.6.12 compiled from source with the
same resoults.
Is it a problem if the devices are on the same HD? I'm trying this way
because it's a test. If, so thats ok, in real life we will be using 2
SATA 160GB discs.
Has anyone else that I can do?
If anyone has any clue about this, please, let me know, as it is part of
a important project I'm working on, and I gave this solution to "merge"
the hard discs in one bigger device.
Thanks in advance,
- --
William Marques
Consultor Linux - TI
LPIC-1: LPI000058633
Scinergy Consulting Ltda.
Fone: +55 21 2224-3224
http://www.scinergy.com.br
Rio de Janeiro - Brasil
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