Retrieve Data from Shared Storage Without Starting a Cluster

This procedure describes how to retrieve your shared storage from Amazon® Web Services (AWS®), without starting a cluster to access /shared/persisted. The major steps are described in the following subtopics:

Find Shared Storage Resources in AWS

  1. Log in to the AWS Management Console and access your Amazon EC2® Dashboard.

  2. On the right side of the tool bar at the top of the page, select the Region that your cluster is located in.

  3. In the left side navigation pane, select Elastic Block Store > Snapshots.

  4. Search for your snapshot:

    • In the Filter list, select Owned By Me.

    • In the Search Snapshots field, search for your cluster using the string "Name : <cluster_name>", where <cluster_name> is the name of your cluster in Cloud Center.

    • Sort the Started column in descending order.

    • Select the snapshot that you want to copy.

  5. In the lower half of the page, review the Tags for the top result in the list, and verify that the mw-ClusterName value has the correct cluster name.

  6. Select the snapshot with the most recent Started value in the Details tab. Copy the Snapshot ID (for example, snap-20cd6642) and note its Volume size value.

Launch Instance or Attach Volume to Existing Instance

Select one of these two options:

Option 1: Create Ubuntu Instance

To create an instance from the Amazon Elastic Block Store (EBS) snapshot, you must first create an AMI from an EBS snapshot that will become the root volume for your new EBS instance. For details, see the AWS documentation on Creating or Restoring an EC2 Instance from an EBS Snapshot.

Option 2: Attach Volume to Existing Ubuntu Instance

To attach the snapshot to your existing Ubuntu® instance, see the AWS documentation on Attach an Amazon EBS Volume to an Amazon EC2 Instance. Note that the EBS volume and the instance must be in the same Availability Zone.

For more information on EBS volumes, see the AWS documentation on Replace an Amazon EBS volume using a snapshot.

Mount Volume for Access

Make the volume available for use from the instance. As you are restoring your snapshot, your volume already has a file system. You only need to mount the volume for access. For details on how to mount your volume, see the AWS documentation on Make an Amazon EBS volume available for use.

Transfer Data

You can now transfer data between the mounted volume and your local drive, as described in Transfer Data with Standard Utilities.

See Also

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