==========================
Dell EMC PowerStore driver
==========================

This section explains how to configure and connect the block
storage nodes to an PowerStore storage cluster.

Supported operations
~~~~~~~~~~~~~~~~~~~~

- Create, delete, attach and detach volumes.
- Create, delete volume snapshots.
- Create a volume from a snapshot.
- Copy an image to a volume.
- Copy a volume to an image.
- Clone a volume.
- Extend a volume.
- Get volume statistics.
- Attach a volume to multiple servers simultaneously (multiattach).
- Revert a volume to a snapshot.

Driver configuration
~~~~~~~~~~~~~~~~~~~~

Add the following content into ``/etc/cinder/cinder.conf``:

.. code-block:: ini

  [DEFAULT]
  enabled_backends = powerstore

  [powerstore]
  # PowerStore REST IP
  san_ip = <San IP>
  # PowerStore REST username and password
  san_login = <San username>
  san_password = <San Password>
  # Storage protocol
  storage_protocol = <Storage protocol> # FC or iSCSI
  # Volume driver name
  volume_driver = cinder.volume.drivers.dell_emc.powerstore.driver.PowerStoreDriver
  # Backend name
  volume_backend_name = <Backend name>
  # PowerStore appliances
  powerstore_appliances = <Appliances names> # Ex. Appliance-1,Appliance-2
  # PowerStore allowed ports
  powerstore_ports = <Allowed ports> # Ex. 58:cc:f0:98:49:22:07:02,58:cc:f0:98:49:23:07:02

Driver options
~~~~~~~~~~~~~~

The driver supports the following configuration options:

.. config-table::
   :config-target: PowerStore

  cinder.volume.drivers.dell_emc.powerstore.driver

SSL support
~~~~~~~~~~~

To enable the SSL certificate verification, modify the following options in the
``cinder.conf`` file:

.. code-block:: ini

  driver_ssl_cert_verify = True
  driver_ssl_cert_path = <path to the CA>

By default, the SSL certificate validation is disabled.

If the ``driver_ssl_cert_path`` option is omitted, the system default CA will
be used.

Thin provisioning and compression
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The driver creates thin provisioned compressed volumes by default.
Thick provisioning is not supported.