openstack/cinder
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Merge "[Docs] Pull over Cinder service overview for install"

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doc/source/install/get-started-block-storage.rst Normal file
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=====================================
Cinder Block Storage service overview
=====================================
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.

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doc/source/install/index.rst
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.. toctree::
get-started-block-storage
index-obs
index-rdo
index-ubuntu