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