========================== 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 = # PowerStore REST username and password san_login = san_password = # 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 = # PowerStore appliances powerstore_appliances = # Ex. Appliance-1,Appliance-2 # PowerStore allowed ports powerstore_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 = 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. CHAP authentication support ~~~~~~~~~~~~~~~~~~~~~~~~~~~ The driver supports one-way (Single mode) CHAP authentication. To use CHAP authentication CHAP Single mode has to be enabled on the storage side. .. note:: When enabling CHAP, any previously added hosts will need to be updated with CHAP configuration since there will be I/O disruption for those hosts. It is recommended that before adding hosts to the cluster, decide what type of CHAP configuration is required, if any. CHAP configuration is retrieved from the storage during driver initialization, no additional configuration is needed. Secrets are generated automatically.