Cloning Volumes

Cloning a volume creates a new volume with a new name and iSCSI target, but the same size, contents, and thin provisioning setting as the original volume at the time of the cloning. The new volume is located in the same pool as the original volume and is available immediately. Cloning a volume does not affect the original volume, which continues to exist after the cloning operation.

A cloned volume consumes 100% of the original volume size from free space in the pool in which the original volume resides. If you want to create snapshots or replicas of the new volume, you will need additional pool space.

To clone a volume, click:

Volumes > volume_name > Clone volume

The Clone Volume - General Settings dialog box (Figure 22: Clone Volume - General Settings ) appears.

Figure 22: Clone Volume - General Settings

Specify information about the new volume in the following fields:

Note: You cannot choose a different storage pool (if available) during the clone operation.

Click Next.

The Clone Volume - Space Reserve dialog box appears (Figure 23: Clone Volume - Space Reserve ).

Figure 23: Clone Volume - Space Reserve

Note: You cannot change the volume size during the clone operation. You can change the size and other volume attributes after creating the volume, as described in Modifying Volume Settings.

In the Snapshot reserve field, optionally, specify the amount of space, as a percentage of the volume reserve, to reserve for snapshots of the new volume. The default is the group-wide volume setting. Snapshot space is reserved even if you never create a snapshot. You cannot create snapshots of a volume until you reserve space.

The values in the pool space table shown in Figure 23: Clone Volume - Space Reserve reflect the effect of the new volume on the pool space. See Table 1: Storage Pool Space Table Values for Volumes for a description of the values.

If cloning the volume will exceed the capacity of the pool or the delegated space on the partner, the relevant table cell will turn red.

Click Next to display the Clone Volume – iSCSI Access Policy dialog box (Figure 24: Clone Volume - iSCSI Access Policy ).

Figure 24: Clone Volume - iSCSI Access Policy

This dialog box enables you to create an access control record that restricts host access to the new volume and its snapshots, as described in Creating Access Control Records.

Select the method of restricting access and specify the required information.

Click Next to display the Clone Volume – Summary dialog box, which summarizes the volume configuration (Figure 25: Clone Volume - Summary ).

Figure 25: Clone Volume - Summary

If the configuration is correct, click Finish to clone the volume. Click Back to make changes.