Liberty -  Liberty -  Liberty -  Liberty -  Liberty -  Liberty -  Liberty -  Liberty - 

 Dell Storage Center Fibre Channel and iSCSI drivers

The Dell Storage Center volume driver interacts with configured Storage Center arrays.

The Dell Storage Center driver manages Storage Center arrays through Enterprise Manager. Enterprise Manager connection settings and Storage Center options are defined in the cinder.conf file.

Prerequisite: Dell Enterprise Manager 2015 R1 or later must be used.

 Supported operations

The Dell Storage Center volume driver provides the following Cinder volume operations:

  • Create, delete, attach (map), and detach (unmap) 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.

 Extra spec options

Volume type extra specs can be used to select different Storage Profiles.

Storage Profiles control how Storage Center manages volume data. For a given volume, the selected Storage Profile dictates which disk tier accepts initial writes, as well as how data progression moves data between tiers to balance performance and cost. Predefined Storage Profiles are the most effective way to manage data in Storage Center.

By default, if no Storage Profile is specified in the volume extra specs, the default Storage Profile for the user account configured for the Block Storage driver is used. The extra spec key storagetype:storageprofile with the value of the name of the Storage Profile on the Storage Center can be set to allow to use Storage Profiles other than the default.

For ease of use from the command line, spaces in Storage Profile names are ignored. As an example, here is how to define two volume types using the High Priority and Low Priority Storage Profiles:

$ cinder type-create "GoldVolumeType"
$ cinder type-key "GoldVolumeType" set storagetype:storageprofile=highpriority
$ cinder type-create "BronzeVolumeType"
$ cinder type-key "BronzeVolumeType" set storagetype:storageprofile=lowpriority

 iSCSI configuration

Use the following instructions to update the configuration file for iSCSI:

 

Example 2.3. Sample iSCSI Configuration

default_volume_type = delliscsi
enabled_backends = delliscsi

[delliscsi]
# Name to give this storage backend
volume_backend_name = delliscsi
# The iSCSI driver to load
volume_driver = cinder.volume.drivers.dell.dell_storagecenter_iscsi.DellStorageCenterISCSIDriver
# IP address of Enterprise Manager
san_ip = 172.23.8.101
# Enterprise Manager user name
san_login = Admin
# Enterprise Manager password
san_password = secret
# The Storage Center iSCSI IP address
iscsi_ip_address = 192.168.0.20
# The Storage Center serial number to use
dell_sc_ssn = 64702

# ==Optional settings==
# The Enterprise Manager API port
dell_sc_api_port = 3033
# Server folder to place new server definitions
dell_sc_server_folder = devstacksrv
# Volume folder to place created volumes
dell_sc_volume_folder = devstackvol/Cinder
# The iSCSI IP port
iscsi_port = 3260


 Fibre Channel configuration

Use the following instructions to update the configuration file for fibre channel:

 

Example 2.4. Sample FC configuration

default_volume_type = dellfc
enabled_backends = dellfc

[dellfc]
# Name to give this storage backend
volume_backend_name = dellfc
# The FC driver to load
volume_driver = cinder.volume.drivers.dell.dell_storagecenter_fc.DellStorageCenterFCDriver
# IP address of Enterprise Manager
san_ip = 172.23.8.101
# Enterprise Manager user name
san_login = Admin
# Enterprise Manager password
san_password = secret
# The Storage Center serial number to use
dell_sc_ssn = 64702

# Optional settings

# The Enterprise Manager API port
dell_sc_api_port = 3033
# Server folder to place new server definitions
dell_sc_server_folder = devstacksrv
# Volume folder to place created volumes
dell_sc_volume_folder = devstackvol/Cinder


 Driver options

The following table contains the configuration options specific to the Dell Storage Center volume driver.

Table 2.4. Description of Dell Storage Center volume driver configuration options
Configuration option = Default value Description
[DEFAULT]
dell_sc_api_port = 3033 (IntOpt) Dell API port
dell_sc_server_folder = openstack (StrOpt) Name of the server folder to use on the Storage Center
dell_sc_ssn = 64702 (IntOpt) Storage Center System Serial Number
dell_sc_verify_cert = False (BoolOpt) Enable HTTPS SC certificate verification.
dell_sc_volume_folder = openstack (StrOpt) Name of the volume folder to use on the Storage Center

Questions? Discuss on ask.openstack.org
Found an error? Report a bug against this page

loading table of contents...