Defines the type of storage for Nova to use on the compute hosts for
the images that back up the instances.
The list of supported options include:
The local storage is used.
The pros include faster operation, failure domain independency
from the external storage. The cons include local space consumption
and less performant and robust live migration with block migration.
Instance images are stored in a Ceph pool shared across all
Nova hypervisors. The pros include faster image start, faster and
more robust live migration. The cons include considerably slower
IO performance, workload operations direct dependency on Ceph cluster
availability and performance.
Instance images and ephemeral images are stored on a local Logical
Volume. If specified,
be set to an available LVM Volume Group, by default,
For details, see Enable LVM ephemeral storage.