PAS_PAA

Hello,

I have been trying to set up a software RAID on my Ubuntu machine (7.10).
I have one disk for the OS and then two identical Maxtor 320GB SATA disks that I
want to set up as RAID 1.

Both disks are formatted ntfs.

Output from fdisk -l

root@office:/home/bob# fdisk -l

Disk /dev/sda: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x8ac8b60f

Device Boot Start End Blocks Id System
/dev/sda1 1 38913 312568641 7 HPFS/NTFS

Disk /dev/sdb: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x8ac8b60f

Device Boot Start End Blocks Id System
/dev/sdb1 1 38913 312568641 7 HPFS/NTFS

Disk /dev/hda: 20.4 GB, 20490559488 bytes
255 heads, 63 sectors/track, 2491 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xe06c8ea5

Device Boot Start End Blocks Id System
/dev/hda1 * 1 2382 19133383+ 83 Linux
/dev/hda2 2383 2491 875542+ 5 Extended
/dev/hda5 2383 2491 875511 82 Linux swap / Solaris

Disk /dev/md0: 320.0 GB, 320070221824 bytes
255 heads, 63 sectors/track, 38912 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00030f75

Device Boot Start End Blocks Id System
/dev/md0p1 1 38912 312560608+ 83 Linux


I had given command:
mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sda /dev/sdb

so now /dev/md0 shows up in the fdisk output

followed by:
mkfs -t ntfs /dev/md0

both commands execute fine.

However, when trying to mount md0, I get:

root@office:/home/bob# mount -t ntfs /dev/md0 /media/store
NTFS signature is missing.
Failed to mount '/dev/md0': Invalid argument
The device '/dev/md0' doesn't have a valid NTFS.
Maybe you selected the wrong device? Or the whole disk instead of a
partition (e.g. /dev/hda, not /dev/hda1)? Or the other way around?

root@office:/home/bob# mount -t ntfs /dev/md0p1 /media/store
Failed to access '/dev/md0p1': No such file or directory


I tried to use GParted to create a partition, but I get this error:

++++++++++++++++++++++++++++++++++++++++++++++++++++++
GParted 0.3.3

Libparted 1.7.1

Format /dev/md0p1 as ntfs 00:01 ( ERROR )

calibrate /dev/md0p1 00:01 ( SUCCES )

path: /dev/md0p1
start: 63
end: 625121279
size: 625121217 (298.08 GiB)
set partitiontype on /dev/md0p1 00:00 ( SUCCES )

new partitiontype: ntfs
create new ntfs filesystem 00:00 ( ERROR )

mkntfs -Q -vv /dev/md0p1

The device doesn't exist; did you specify it correctly?
++++++++++++++++++++++++++++++++++++++++++++++++++++++

Any help would be greatly appreciated.

__________________
ASUS A8N SLI, AMD Athlon 64 3700+ socket 939
ASUS GF6600, 1GB Corsair TWINX 3200 RAM
300GB Seagate SATA HD