OpenStack OpenStack Storage (Cinder & Swift)

Question 1

Which OpenStack service provides block storage (persistent volumes) to virtual machines?

Accepted Answer

Cinder

Answer

Cinder is the OpenStack Block Storage service that provides persistent block storage volumes to VM instances.

Question 2

What is OpenStack Swift used for?

Accepted Answer

Object storage for unstructured data like files and backups

Answer

Swift is OpenStack's Object Storage service for storing and retrieving unstructured data such as files, images, and backups.

Question 3

In Cinder, what is a 'volume'?

Accepted Answer

A detachable persistent block device that can be attached to a VM

Answer

A Cinder volume is a persistent, detachable block device that can be attached to and detached from VM instances.

Question 4

Which Cinder driver is commonly used with LVM (Logical Volume Manager) for local block storage?

Accepted Answer

cinder.volume.drivers.lvm.LVMVolumeDriver

Answer

The LVMVolumeDriver uses Linux LVM to create volumes and exports them via iSCSI to compute nodes by default.

Question 5

What is a Cinder 'snapshot'?

Accepted Answer

A point-in-time read-only copy of a Cinder volume

Answer

A Cinder snapshot is a point-in-time, read-only copy of a volume that can be used to create new volumes.

OpenStack Practice Test