f6ce6bd328
Keep the sync target repo path "common-rst" as of now. Change-Id: I552d2c0a422c4824632b11fa273629004b889306
37 lines
1.4 KiB
ReStructuredText
37 lines
1.4 KiB
ReStructuredText
=======================
|
|
OpenStack Block Storage
|
|
=======================
|
|
|
|
The OpenStack Block Storage service (cinder) adds persistent storage
|
|
to a virtual machine. Block Storage provides an infrastructure for managing
|
|
volumes, and interacts with OpenStack Compute to provide volumes for
|
|
instances. The service also enables management of volume snapshots, and
|
|
volume types.
|
|
|
|
The Block Storage service consists of the following components:
|
|
|
|
cinder-api
|
|
Accepts API requests, and routes them to the ``cinder-volume`` for
|
|
action.
|
|
|
|
cinder-volume
|
|
Interacts directly with the Block Storage service, and processes
|
|
such as the ``cinder-scheduler``. It also interacts with these processes
|
|
through a message queue. The ``cinder-volume`` service responds to read
|
|
and write requests sent to the Block Storage service to maintain
|
|
state. It can interact with a variety of storage providers through a
|
|
driver architecture.
|
|
|
|
cinder-scheduler daemon
|
|
Selects the optimal storage provider node on which to create the
|
|
volume. A similar component to the ``nova-scheduler``.
|
|
|
|
cinder-backup daemon
|
|
The ``cinder-backup`` service provides backing up volumes of any type to
|
|
a backup storage provider. Like the ``cinder-volume`` service, it can
|
|
interact with a variety of storage providers through a driver
|
|
architecture.
|
|
|
|
Messaging queue
|
|
Routes information between the Block Storage processes.
|