The cinder-multi-attach-volume test checks if a single block storage volume can be attached to and accessed from multiple hosts or servers. It runs the following tests:

• Booting a VM from a multi-attach volume
• Resizing a server with a multi-attach volume
• Listing volume attachments for a multi-attach volume
• Creating a snapshot from a multi-attach volume
• Attaching and detaching a multi-attach volume from a shelved or offloaded server
• Deleting an attached multi-attach volume
• Attaching a multi-attach volume to the same or a different server