Dell EqualLogic volume driver

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The Dell EqualLogic volume driver interacts with configured EqualLogic arrays and supports various operations.

Supported operations

Create, delete, attach, and detach volumes.
Create, list, and delete volume snapshots.
Clone a volume.

The OpenStack Block Storage service supports:

Multiple instances of Dell EqualLogic Groups or Dell EqualLogic Group Storage Pools and multiple pools on a single array.
Multiple instances of Dell EqualLogic Groups or Dell EqualLogic Group Storage Pools or multiple pools on a single array.

The Dell EqualLogic volume driver's ability to access the EqualLogic Group is dependent upon the generic block storage driver's SSH settings in the /etc/cinder/cinder.conf file (see the section called “Block Storage sample configuration files” for reference).

Table 1.3. Description of Dell EqualLogic volume driver configuration options
Configuration option = Default value	Description
[DEFAULT]
eqlx_chap_login = admin	(StrOpt) Existing CHAP account name
eqlx_chap_password = password	(StrOpt) Password for specified CHAP account name
eqlx_cli_max_retries = 5	(IntOpt) Maximum retry count for reconnection
eqlx_cli_timeout = 30	(IntOpt) Timeout for the Group Manager cli command execution
eqlx_group_name = group-0	(StrOpt) Group name to use for creating volumes
eqlx_pool = default	(StrOpt) Pool in which volumes will be created
eqlx_use_chap = False	(BoolOpt) Use CHAP authentication for targets?

The following sample /etc/cinder/cinder.conf configuration lists the relevant settings for a typical Block Storage service using a single Dell EqualLogic Group:

Example 1.1. Default (single-instance) configuration

[DEFAULT]
#Required settings

volume_driver = cinder.volume.drivers.eqlx.DellEQLSanISCSIDriver
san_ip = IP_EQLX
san_login = SAN_UNAME
san_password = SAN_PW
eqlx_group_name = EQLX_GROUP
eqlx_pool = EQLX_POOL

#Optional settings

san_thin_provision = true|false
eqlx_use_chap = true|false
eqlx_chap_login = EQLX_UNAME
eqlx_chap_password = EQLX_PW
eqlx_cli_timeout = 30
eqlx_cli_max_retries = 5
san_ssh_port = 22
ssh_conn_timeout = 30
san_private_key = SAN_KEY_PATH
ssh_min_pool_conn = 1
ssh_max_pool_conn = 5

In this example, replace the following variables accordingly:

IP_EQLX: The IP address used to reach the Dell EqualLogic Group through SSH. This field has no default value.
SAN_UNAME: The user name to login to the Group manager via SSH at the san_ip. Default user name is grpadmin.
SAN_PW: The corresponding password of SAN_UNAME. Not used when san_private_key is set. Default password is password.
EQLX_GROUP: The group to be used for a pool where the Block Storage service will create volumes and snapshots. Default group is group-0.
EQLX_POOL: The pool where the Block Storage service will create volumes and snapshots. Default pool is default. This option cannot be used for multiple pools utilized by the Block Storage service on a single Dell EqualLogic Group.
EQLX_UNAME: The CHAP login account for each volume in a pool, if eqlx_use_chap is set to true. Default account name is chapadmin.
EQLX_PW: The corresponding password of EQLX_UNAME. The default password is randomly generated in hexadecimal, so you must set this password manually.
SAN_KEY_PATH (optional): The filename of the private key used for SSH authentication. This provides password-less login to the EqualLogic Group. Not used when san_password is set. There is no default value.

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