OpenNebula Attach Additional Storage To A Virtual Machine

1. Log into OpenNebula Sunstone.
2. You can attach and existing disk image or you can create a new one.
3. Go to “Virtual Resources” in the left menu and click on “Virtual Machines” in the drop down menu.

   

   
   

4. Click on the virtual machine you need to add the storage and go to "Storage" menu.

   

   
   

5. Click on the "Attach Disk" button. A flyout will appear where you can select the image you want to attach.

   

   
   

6. Click on "Advanced Option" and select "none" as cache option.

   Warning: without that option VM cannot be live migrated. In case the server it is running on needs to be taken out for maintenance your and will have to be shutdown.

   

   
   

7. Click on the "Attach" button to add the storage to the Virtual Machine.

   
   

8. If you want to have the storage attached to the virtual machine next time it is instantiated, you must update the machine's template accordingly. See Configure Template.