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MapR on Ubuntu 12.0.4 - Disk setup on EC2

Question asked by manikandan on Jan 14, 2013
Latest reply on Jan 18, 2013 by morillo
I see these steps in seting up the disk for MapR installation at [link][1]

To determine if a disk or partition is ready for use by MapR:

Run the command sudo lsof to determine whether any processes are already using the disk or partition.

There should be no output when running sudo fuser , indicating there is no > process accessing the specific disk or partition.

The disk or partition should not be mounted, as checked via the output of the mount ?command.

The disk or partition should not have an entry in the /etc/fstab file.

The disk or partition should be accessible to standard Linux tools such as mkfs. You should be able to successfully format the partition using a command like sudo mkfs.ext3 as this is similar to the operations MapR performs during installation. If mkfs fails to access and format the partition, then it is highly likely MapR will encounter the same problem.

I have issues in acheiving this on amazon EC2 instance. Steps that i have tried

I have created a large EC2 instance.
Created the snapsot of that volume associated with that instance
Created a new volume with 500 GB from the snapshot created above
I am not sure, how to unmount this new volume and make it available for MapR. I also see an entry in /etc/fstab for this new volume.

Can some one give a step-by-step approach to create a disk or partition which satisfies the above mentioned criteria for MapR?