Merge "[config-ref] Convert lenovo-driver to RST"
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======================================
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Lenovo Fibre Channel and iSCSI drivers
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======================================
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The ``LenovoFCDriver`` and ``LenovoISCSIDriver`` Cinder drivers allow
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Lenovo S3200 or S2200 arrays to be used for block storage in OpenStack
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deployments.
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System requirements
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~~~~~~~~~~~~~~~~~~~
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To use the Lenovo drivers, the following are required:
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- Lenovo S3200 or S2200 array with:
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- iSCSI or FC host interfaces
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- G22x firmware or later
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- Network connectivity between the OpenStack host and the array
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management interfaces
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- HTTPS or HTTP must be enabled on the array
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Supported operations
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~~~~~~~~~~~~~~~~~~~~
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- Create, delete, attach, and detach volumes.
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- Create, list, and delete volume snapshots.
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- Create a volume from a snapshot.
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- Copy an image to a volume.
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- Copy a volume to an image.
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- Clone a volume.
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- Extend a volume.
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- Migrate a volume with back-end assistance.
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- Retype a volume.
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- Manage and unmanage a volume.
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Configuring the array
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~~~~~~~~~~~~~~~~~~~~~
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#. Verify that the array can be managed using an HTTPS connection. HTTP can
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also be used if ``lenovo_api_protocol=http`` is placed into the
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appropriate sections of the ``cinder.conf`` file.
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Confirm that virtual pools A and B are present if you plan to use
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virtual pools for OpenStack storage.
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#. Edit the ``cinder.conf`` file to define a storage back-end entry for
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each storage pool on the array that will be managed by OpenStack. Each
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entry consists of a unique section name, surrounded by square brackets,
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followed by options specified in ``key=value`` format.
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- The ``lenovo_backend_name`` value specifies the name of the storage
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pool on the array.
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- The ``volume_backend_name`` option value can be a unique value, if
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you wish to be able to assign volumes to a specific storage pool on
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the array, or a name that's shared among multiple storage pools to
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let the volume scheduler choose where new volumes are allocated.
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- The rest of the options will be repeated for each storage pool in a
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given array: the appropriate Cinder driver name; IP address or
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hostname of the array management interface; the username and password
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of an array user account with ``manage`` privileges; and the iSCSI IP
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addresses for the array if using the iSCSI transport protocol.
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In the examples below, two back ends are defined, one for pool A and one
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for pool B, and a common ``volume_backend_name`` is used so that a
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single volume type definition can be used to allocate volumes from both
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pools.
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**Example: iSCSI example back-end entries**
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.. code-block:: ini
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[pool-a]
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lenovo_backend_name = A
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volume_backend_name = lenovo-array
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volume_driver = cinder.volume.drivers.lenovo.lenovo_iscsi.LenovoISCSIDriver
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san_ip = 10.1.2.3
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san_login = manage
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san_password = !manage
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lenovo_iscsi_ips = 10.2.3.4,10.2.3.5
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[pool-b]
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lenovo_backend_name = B
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volume_backend_name = lenovo-array
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volume_driver = cinder.volume.drivers.lenovo.lenovo_iscsi.LenovoISCSIDriver
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san_ip = 10.1.2.3
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san_login = manage
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san_password = !manage
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lenovo_iscsi_ips = 10.2.3.4,10.2.3.5
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**Example: Fibre Channel example back-end entries**
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.. code-block:: ini
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[pool-a]
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lenovo_backend_name = A
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volume_backend_name = lenovo-array
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volume_driver = cinder.volume.drivers.lenovo.lenovo_fc.LenovoFCDriver
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san_ip = 10.1.2.3
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san_login = manage
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san_password = !manage
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[pool-b]
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lenovo_backend_name = B
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volume_backend_name = lenovo-array
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volume_driver = cinder.volume.drivers.lenovo.lenovo_fc.LenovoFCDriver
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san_ip = 10.1.2.3
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san_login = manage
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san_password = !manage
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#. If HTTPS is not enabled in the array, include
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``lenovo_api_protocol = http`` in each of the back-end definitions.
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#. If HTTPS is enabled, you can enable certificate verification with the
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option ``lenovo_verify_certificate=True``. You may also use the
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``lenovo_verify_certificate_path`` parameter to specify the path to a
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CA_BUNDLE file containing CAs other than those in the default list.
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#. Modify the ``[DEFAULT]`` section of the ``cinder.conf`` file to add an
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``enabled_backends`` parameter specifying the back-end entries you added,
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and a ``default_volume_type`` parameter specifying the name of a volume
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type that you will create in the next step.
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**Example: [DEFAULT] section changes**
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.. code-block:: ini
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[DEFAULT]
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...
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enabled_backends = pool-a,pool-b
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default_volume_type = lenovo
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...
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#. Create a new volume type for each distinct ``volume_backend_name`` value
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that you added to the ``cinder.conf`` file. The example below
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assumes that the same ``volume_backend_name=lenovo-array``
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option was specified in all of the
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entries, and specifies that the volume type ``lenovo`` can be used to
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allocate volumes from any of them.
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**Example: Creating a volume type**
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.. code-block:: console
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$ cinder type-create lenovo
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$ cinder type-key lenovo set volume_backend_name=lenovo-array
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#. After modifying the ``cinder.conf`` file,
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restart the ``cinder-volume`` service.
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Driver-specific options
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~~~~~~~~~~~~~~~~~~~~~~~
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The following table contains the configuration options that are specific
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to the Lenovo drivers.
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.. include:: ../../tables/cinder-lenovo.rst
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