mdadm and 2.4 kernel?

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Hi, for various reasons i'll need to run mdadm on a 2.4 kernel.
Now I have 2.4.32 kernel.

Take a look:

root@data:~# mdadm --create --verbose /dev/md0 --level=1 --bitmap=/root/md0bitmap -n 2 /dev/nda /dev/ndb --force --assume-clean
mdadm: /dev/nda appears to be part of a raid array:
   level=raid1 devices=2 ctime=Thu May 25 20:10:47 2006
mdadm: /dev/ndb appears to be part of a raid array:
   level=raid1 devices=2 ctime=Thu May 25 20:10:47 2006
mdadm: size set to 39118144K
Continue creating array? y
mdadm: Warning - bitmaps created on this kernel are not portable
 between different architectured.  Consider upgrading the Linux kernel.
mdadm: Cannot set bitmap file for /dev/md0: No such device


root@data:~# mdadm --create --verbose /dev/md0 --level=1 -n 2 /dev/nda /dev/ndb --force --assume-clean
mdadm: /dev/nda appears to be part of a raid array:
   level=raid1 devices=2 ctime=Thu May 25 20:10:47 2006
mdadm: /dev/ndb appears to be part of a raid array:
   level=raid1 devices=2 ctime=Thu May 25 20:10:47 2006
mdadm: size set to 39118144K
Continue creating array? y
mdadm: SET_ARRAY_INFO failed for /dev/md0: File exists
root@data:~# Obviously the devices "/dev/nda" and "/dev/ndb" exists (i can make fdisk on them).

Can someone help me?
Thanks.
Stefano.



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