Here i am trying to increase the array partition using the commands of mdadm such as:
mdadm --grow /dev/md0 --size="60000"
and resizing it using resize2fs and then adding a array or
the /dev/md0 which i created using dd command

Problem here is it does not increasing the size of array partition from 20m ,which i used for only one loop device but after adding 2 or 3 more i am unable to increase the size of the array partition . even after sync all those.....

Plz help me out it's very urgent.....

Without knowing more about your raid array, it's difficult to help. However I have found these instructions useful in the past.

http://www.howtoforge.com/how-to-res...-software-raid

The commands present in that link i have done it earlier only but not got the result...
I will till u in detail

i have used dd if=/dev/zero 0f=disk0 bs=1M count=256
and used losetup for this
i have repeated this and created about 5 of them by name disk0-5,
and used mdadm command and created a raid 1 using two of the above arrays or disk's of

now what i want is to increase the size of that raid which here it shows only 20m i used the given commands present in the link
but it does not increase and shows error that it's not enough memory ,and also after sync all disk to one raid the memory
used is not increasing for the for the given array....

plz help....