Installation and configuration

Installation

Important

First need to do setting up the environment. All commands are executed only from superuser.

Mode superuser:

sudo -i

Important

Installation is performed on all nodes with cinder-volume service.

  1. Install package:

    • from Python packages repository:

      pip3 install cinder-sharedlvm-driver

Note

To install Cinder Sharedlvm Driver on Astra Linux (Smolensk) do following:

  1. Connect the provided repository with AccentOS packages.

  2. Install the package with the command:

    sudo apt install -y aos-cinder-sharedlvm-driver

Configuration

Important

It is recommended to increase the value of the rpc_response_timeout parameter in the [DEFAULT] section in configuration file /etc/cinder/cinder.conf on all Cinder nodes and value of the agent_response_timeout drivers parameter on nodes with cinder-volume for correct execution of long-term operations on volumes.

  1. Configure and start aos-agent service of lvm type on nodes with cinder-volume, cinder-backup and nova-compute services.

  2. Specify the driver as the storage backend driver in the Cinder config file /etc/cinder/cinder.conf.

    Example of configuring sanlock backend:

    [sanlock]
volume_driver = cinder_sharedlvm_driver.driver.SharedLVMDriver
agent_transport_url = amqp://aos:password@sanlock.stand.loc/aos
volume_group = vol
lvm_type = default
lvm_mirrors = 0
volume_backend_name=sanlock
agent_response_timeout = 60
[nova]
token_auth_url = http://sanlock.stand.loc:5000
auth_section = keystone_authtoken
auth_type = password

  3. cinder-volume service restart:

    # Debian:
systemctl restart cinder-volume.service

Driver parameters

Driver extends standard LVM driver parameters in Cinder config file /etc/cinder/cinder.conf with additional:

Section Parameter Description Default value
[sanlock] agent_transport_url

Connection parameters to the message server AMQP. Example: amqp://aos:password@controller:5672/aos, where aos is vhost name in RabbitMQ in this case.

Important

If there are special characters in the login and password, they should be replaced with the corresponding URL codes. Example: passw#ord — passw%23ord.

  
[sanlock] agent_response_timeout Maximum time to wait for a response from aos-agent service. 60
[sanlock] agent_confirm_timeout Maximum time to wait for confirmation of response from aos-agent service. 10
[nova] token_auth_url Nova service connection parameters. Example: http://sanlock.stand.loc:5000.  
[nova] auth_section Section of Keystone configuration file used for authorization. keystone_authtoken
[nova] auth_type Authorization type. password

Important

It is necessary to fill in parameters of section [nova] for the driver to work correctly.

Note

Section name [sanlock] is the name of Cinder backend and may differ in each case.