
Fix bug with using PowerStore with enabled CHAP as a storage backend. Change-Id: I2164be24a2c6adce78dc7782d2fa2791e1a8f27e Closes-Bug: #1900979
2.7 KiB
Dell EMC PowerStore driver
This section explains how to configure and connect the block storage nodes to an PowerStore storage cluster.
Supported operations
- Create, delete, attach and detach volumes.
- Create, 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.
- Get volume statistics.
- Attach a volume to multiple servers simultaneously (multiattach).
- Revert a volume to a snapshot.
Driver configuration
Add the following content into
/etc/cinder/cinder.conf
:
[DEFAULT]
enabled_backends = powerstore
[powerstore]
# PowerStore REST IP
san_ip = <San IP>
# PowerStore REST username and password
san_login = <San username>
san_password = <San Password>
# Storage protocol
storage_protocol = <Storage protocol> # FC or iSCSI
# Volume driver name
volume_driver = cinder.volume.drivers.dell_emc.powerstore.driver.PowerStoreDriver
# Backend name
volume_backend_name = <Backend name>
# PowerStore appliances
powerstore_appliances = <Appliances names> # Ex. Appliance-1,Appliance-2
# PowerStore allowed ports
powerstore_ports = <Allowed ports> # Ex. 58:cc:f0:98:49:22:07:02,58:cc:f0:98:49:23:07:02
Driver options
The driver supports the following configuration options:
cinder.volume.drivers.dell_emc.powerstore.driver
SSL support
To enable the SSL certificate verification, modify the following
options in the cinder.conf
file:
driver_ssl_cert_verify = True
driver_ssl_cert_path = <path to the CA>
By default, the SSL certificate validation is disabled.
If the driver_ssl_cert_path
option is omitted, the
system default CA will be used.
Thin provisioning and compression
The driver creates thin provisioned compressed volumes by default. Thick provisioning is not supported.
CHAP authentication support
The driver supports one-way (Single mode) CHAP authentication. To use CHAP authentication CHAP Single mode has to be enabled on the storage side.
Note
When enabling CHAP, any previously added hosts will need to be updated with CHAP configuration since there will be I/O disruption for those hosts. It is recommended that before adding hosts to the cluster, decide what type of CHAP configuration is required, if any.
CHAP configuration is retrieved from the storage during driver initialization, no additional configuration is needed. Secrets are generated automatically.