Lenovo Fibre Channel and iSCSI drivers

The LenovoFCDriver and LenovoISCSIDriver Cinder drivers allow Lenovo S-Series arrays to be used for block storage in OpenStack deployments.

System requirements

To use the Lenovo drivers, the following are required:

• Lenovo S2200, S3200, DS2200, DS4200 or DS6200 array with:

  • iSCSI or FC host interfaces

  • G22x firmware or later

• Network connectivity between the OpenStack host and the array management interfaces

• HTTPS or HTTP must be enabled on the array

Supported operations

• Create, delete, attach, and detach volumes.

• Create, list, and 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.

• Migrate a volume with back-end assistance.

• Retype a volume.

• Manage and unmanage a volume.

Note

The generic grouping functionality supported in the G265 and later firmware is not supported by OpenStack Cinder due to differences in the grouping models used in Cinder and the S-Series firmware.

Configuring the array

1. Verify that the array can be managed using an HTTPS connection. HTTP can also be used if hpmsa_api_protocol=http is placed into the appropriate sections of the cinder.conf file, but this option is deprecated and will be removed in a future release.

   Confirm that virtual pools A and B are present if you plan to use virtual pools for OpenStack storage.

2. Edit the cinder.conf file to define a storage back-end entry for each storage pool on the array that will be managed by OpenStack. Each entry consists of a unique section name, surrounded by square brackets, followed by options specified in key=value format.

   • The lenovo_pool_name value specifies the name of the storage pool on the array.

   • The volume_backend_name option value can be a unique value, if you wish to be able to assign volumes to a specific storage pool on the array, or a name that is shared among multiple storage pools to let the volume scheduler choose where new volumes are allocated.

   • The rest of the options will be repeated for each storage pool in a given array:

     • volume_driver specifies the Cinder driver name.

     • san_ip specifies the IP addresses or host names of the array’s management controllers.

     • san_login and san_password specify the username and password of an array user account with manage privileges.

     • driver_use_ssl should be set to true to enable use of the HTTPS protocol.

     • lenovo_iscsi_ips specfies the iSCSI IP addresses for the array if using the iSCSI transport protocol.

   In the examples below, two back ends are defined, one for pool A and one for pool B, and a common volume_backend_name is used so that a single volume type definition can be used to allocate volumes from both pools.

   Example: iSCSI example back-end entries

   [pool-a]
   lenovo_pool_name = A
   volume_backend_name = lenovo-array
   volume_driver = cinder.volume.drivers.lenovo.lenovo_iscsi.LenovoISCSIDriver
   san_ip = 10.1.2.3
   san_login = manage
   san_password = !manage
   lenovo_iscsi_ips = 10.2.3.4,10.2.3.5
   driver_use_ssl = true
   
   [pool-b]
   lenovo_pool_name = B
   volume_backend_name = lenovo-array
   volume_driver = cinder.volume.drivers.lenovo.lenovo_iscsi.LenovoISCSIDriver
   san_ip = 10.1.2.3
   san_login = manage
   san_password = !manage
   lenovo_iscsi_ips = 10.2.3.4,10.2.3.5
   driver_use_ssl = true
   

   Example: Fibre Channel example back-end entries

   [pool-a]
   lenovo_pool_name = A
   volume_backend_name = lenovo-array
   volume_driver = cinder.volume.drivers.lenovo.lenovo_fc.LenovoFCDriver
   san_ip = 10.1.2.3
   san_login = manage
   san_password = !manage
   driver_use_ssl = true
   
   [pool-b]
   lenovo_pool_name = B
   volume_backend_name = lenovo-array
   volume_driver = cinder.volume.drivers.lenovo.lenovo_fc.LenovoFCDriver
   san_ip = 10.1.2.3
   san_login = manage
   san_password = !manage
   driver_use_ssl = true
   

3. If HTTPS is not enabled in the array, add lenovo_api_protocol = http in each of the back-end definitions.

4. If HTTPS is enabled, you can enable certificate verification with the option driver_ssl_cert_verify = True. You may also use the driver_ssl_cert_path option to specify the path to a CA_BUNDLE file containing CAs other than those in the default list.

5. Modify the [DEFAULT] section of the cinder.conf file to add an enabled_backends parameter specifying the back-end entries you added, and a default_volume_type parameter specifying the name of a volume type that you will create in the next step.

   Example: [DEFAULT] section changes

   [DEFAULT]
   # ...
   enabled_backends = pool-a,pool-b
   default_volume_type = lenovo
   

6. Create a new volume type for each distinct volume_backend_name value that you added to the cinder.conf file. The example below assumes that the same volume_backend_name=lenovo-array option was specified in all of the entries, and specifies that the volume type lenovo can be used to allocate volumes from any of them.

   Example: Creating a volume type

   $ openstack volume type create lenovo
   $ openstack volume type set --property volume_backend_name=lenovo-array lenovo
   

7. After modifying the cinder.conf file, restart the cinder-volume service.

Driver-specific options

The following table contains the configuration options that are specific to the Lenovo drivers.

Description of Lenovo configuration options

Configuration option = Default value	Description
lenovo_iscsi_ips = []	(List of String) List of comma-separated target iSCSI IP addresses.
lenovo_pool_name = A	(String) Pool or Vdisk name to use for volume creation.
lenovo_pool_type = virtual	(String(choices=[‘linear’, ‘virtual’])) linear (for VDisk) or virtual (for Pool).
lenovo_api_protocol = https	(String(choices=[‘http’, ‘https’])) Lenovo api interface protocol. DEPRECATED
lenovo_verify_certificate = False	(Boolean) Whether to verify Lenovo array SSL certificate. DEPRECATED
lenovo_verify_certificate_path = None	(String) Lenovo array SSL certificate path. DEPRECATED