OpenStack OpenStack Storage (Cinder & Swift)

Question 1

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

Accepted Answer

Cinder

Answer

Swift

Answer

Glance

Answer

Manila

Question 2

What is OpenStack Swift used for?

Accepted Answer

Object storage for unstructured data like files and backups

Answer

Block storage for VM disks

Answer

File storage with NFS/CIFS protocols

Answer

Ephemeral storage for running instances

Question 3

In Cinder, what is a 'volume'?

Accepted Answer

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

Answer

A logical storage pool shared among all tenants

Answer

A snapshot of a running instance's root disk

Answer

A filesystem mounted directly on the compute node

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

cinder.volume.drivers.rbd.RBDDriver

Answer

cinder.volume.drivers.nfs.NfsDriver

Answer

cinder.volume.drivers.iscsi.ISCSIDriver

Question 5

What is a Cinder 'snapshot'?

Accepted Answer

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

Answer

A full clone of a volume stored in a separate pool

Answer

A live backup of a running instance's root disk

Answer

A pre-configured volume template

Question 6

In Swift, what is the basic unit of storage called?

Accepted Answer

Object

Answer

Blob

Answer

Bucket

Answer

Block