taikun.cloud

Taikun Logo

Taikun OCP Guide

Table of Contents

Manage volumes and volume types

Volumes are the Block Storage devices that you attach to instances to
enable persistent storage. Users can attach a volume to a running
instance or detach a volume and attach it to another instance at any
time. For information about using the dashboard to create and manage
volumes as an end user, see the OpenStack End User Guide </user/manage-volumes>.

As an administrative user, you can manage volumes and volume types
for users in various projects. You can create and delete volume types,
and you can view and delete volumes. Note that a volume can be encrypted
by using the steps outlined below.

Create a volume type

  1. Log in to the dashboard and select the admin project from the
    drop-down list.
  2. On the Admin
    tab, open the Volume tab.
  3. Click the Volume Types tab, and click Create Volume Type
    button. In the Create Volume Type window, enter a name for the
    volume type.
  4. Click Create Volume Type button to confirm your
    changes.

Note

A message indicates whether the action succeeded.

Create an encrypted volume
type

  1. Create a volume type using the steps above for create-a-volume-type.
  2. Click Create Encryption in the Actions column of the
    newly created volume type.
  3. Configure the encrypted volume by setting the parameters below from
    available options (see table):

    Provider

    Specifies the encryption provider format.

    Control Location

    Specifies whether the encryption is from the front end (nova) or the
    back end (cinder).

    Cipher

    Specifies the encryption algorithm.

    Key Size (bits)

    Specifies the encryption key size.

  4. Click Create Volume Type Encryption.
figures/create_volume_type_encryption.png
Encryption Options

The table below provides a few alternatives available for creating
encrypted volumes.

Encryption parameters

Parameter options

Comments

Provider

luks (Recommended)Allows easier import and migration of imported encrypted volumes,
and allows access key to be changed without re-encrypting the
volume
plainLess disk overhead than LUKS
Control Locationfront-end (Recommended)The encryption occurs within nova so that the data transmitted over
the network is encrypted
back-endThis could be selected if a cinder plug-in supporting an encrypted
back-end block storage device becomes available in the future. TLS or
other network encryption would also be needed to protect data as it
traverses the network

Cipher

aes-xts-plain64 (Recommended)See NIST reference below to see advantages*
aes-cbc-essivNote: On the command line, type ‘cryptsetup benchmark’ for
additional options

Key Size (bits)

256 (Recommended for aes-xts-plain64 and aes-cbc-essiv)Using this selection for aes-xts, the underlying key size would only
be 128-bits*

* Source NIST
SP 800-38E

Note

To see further information and CLI instructions, see Create
an encrypted volume type
in the OpenStack Block Storage
Configuration Guide.

Delete volume types

When you delete a volume type, volumes of that type are not
deleted.

  1. Log in to the dashboard and select the admin project from the
    drop-down list.
  2. On the Admin
    tab, open the Volume tab.
  3. Click the Volume Types tab, select the volume type or types
    that you want to delete.
  4. Click Delete Volume Types button.
  5. In the Confirm Delete Volume Types window, click the
    Delete Volume Types button to confirm the
    action.

Note

A message indicates whether the action succeeded.

Delete volumes

When you delete an instance, the data of its attached volumes is not
destroyed.

  1. Log in to the dashboard and select the admin project from the
    drop-down list.
  2. On the Admin
    tab, open the Volume tab.
  3. Click the Volumes tab, Select the volume or volumes that
    you want to delete.
  4. Click Delete Volumes button.
  5. In the Confirm Delete Volumes window, click the Delete Volumes button to
    confirm the action.

Note

A message indicates whether the action succeeded.

taikun-logo-icon

Explore Taikun CloudWorks in 2 Minutes!