178 lines
5.4 KiB
ReStructuredText
178 lines
5.4 KiB
ReStructuredText
=========================
|
|
Create and manage volumes
|
|
=========================
|
|
|
|
Volumes are block storage devices that you attach to instances to enable
|
|
persistent storage. You can attach a volume to a running instance or
|
|
detach a volume and attach it to another instance at any time. You can
|
|
also create a snapshot from or delete a volume. Only administrative
|
|
users can create volume types.
|
|
|
|
Create a volume
|
|
~~~~~~~~~~~~~~~
|
|
|
|
#. Log in to the dashboard.
|
|
|
|
#. Select the appropriate project from the drop down menu at the top left.
|
|
|
|
#. On the :guilabel:`Project` tab, open the :guilabel:`Volumes` tab and
|
|
click :guilabel:`Volumes` category.
|
|
|
|
#. Click :guilabel:`Create Volume`.
|
|
|
|
In the dialog box that opens, enter or select the following values.
|
|
|
|
:guilabel:`Volume Name`: Specify a name for the volume.
|
|
|
|
:guilabel:`Description`: Optionally, provide a brief description for the
|
|
volume.
|
|
|
|
:guilabel:`Volume Source`: Select one of the following options:
|
|
|
|
* No source, empty volume: Creates an empty volume. An empty volume does
|
|
not contain a file system or a partition table.
|
|
|
|
* Snapshot: If you choose this option, a new field for
|
|
:guilabel:`Use snapshot as a source` displays. You can select the
|
|
snapshot from the list.
|
|
|
|
* Image: If you choose this option, a new field for :guilabel:`Use image
|
|
as a source` displays. You can select the image from the list.
|
|
|
|
* Volume: If you choose this option, a new field for
|
|
:guilabel:`Use volume as a source` displays. You can select the volume
|
|
from the list. Options to use a snapshot or a volume as the source for a
|
|
volume are displayed only if there are existing snapshots or volumes.
|
|
|
|
:guilabel:`Type`: Leave this field blank.
|
|
|
|
:guilabel:`Size (GB)`: The size of the volume in gibibytes (GiB).
|
|
|
|
:guilabel:`Availability Zone`: Select the Availability Zone from the list.
|
|
By default, this value is set to the availability zone given by the cloud
|
|
provider (for example, ``us-west`` or ``apac-south``). For some cases,
|
|
it could be ``nova``.
|
|
|
|
#. Click :guilabel:`Create Volume`.
|
|
|
|
The dashboard shows the volume on the :guilabel:`Volumes` tab.
|
|
|
|
.. _attach_a_volume_to_an_instance_dash:
|
|
|
|
Attach a volume to an instance
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
After you create one or more volumes, you can attach them to instances.
|
|
You can attach a volume to one instance at a time.
|
|
|
|
#. Log in to the dashboard.
|
|
|
|
#. Select the appropriate project from the drop down menu at the top left.
|
|
|
|
#. On the :guilabel:`Project` tab, open the :guilabel:`Volumes` tab and
|
|
click :guilabel:`Volumes` category.
|
|
|
|
#. Select the volume to add to an instance and click
|
|
:guilabel:`Manage Attachments`.
|
|
|
|
#. In the :guilabel:`Manage Volume Attachments` dialog box, select an instance.
|
|
|
|
#. Enter the name of the device from which the volume is accessible by
|
|
the instance.
|
|
|
|
.. note::
|
|
|
|
The actual device name might differ from the volume name because
|
|
of hypervisor settings.
|
|
|
|
#. Click :guilabel:`Attach Volume`.
|
|
|
|
The dashboard shows the instance to which the volume is now attached
|
|
and the device name.
|
|
|
|
You can view the status of a volume in the Volumes tab of the dashboard.
|
|
The volume is either Available or In-Use.
|
|
|
|
Now you can log in to the instance and mount, format, and use the disk.
|
|
|
|
Detach a volume from an instance
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
#. Log in to the dashboard.
|
|
|
|
#. Select the appropriate project from the drop down menu at the top left.
|
|
|
|
#. On the :guilabel:`Project` tab, open the :guilabel:`Volumes` tab and
|
|
click the :guilabel:`Volumes` category.
|
|
|
|
#. Select the volume and click :guilabel:`Manage Attachments`.
|
|
|
|
#. Click :guilabel:`Detach Volume` and confirm your changes.
|
|
|
|
A message indicates whether the action was successful.
|
|
|
|
Create a snapshot from a volume
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
#. Log in to the dashboard.
|
|
|
|
#. Select the appropriate project from the drop down menu at the top left.
|
|
|
|
#. On the :guilabel:`Project` tab, open the :guilabel:`Volumes` tab and
|
|
click :guilabel:`Volumes` category.
|
|
|
|
#. Select a volume from which to create a snapshot.
|
|
|
|
#. In the :guilabel:`Actions` column, click :guilabel:`Create Snapshot`.
|
|
|
|
#. In the dialog box that opens, enter a snapshot name and a brief
|
|
description.
|
|
|
|
#. Confirm your changes.
|
|
|
|
The dashboard shows the new volume snapshot in Volume Snapshots tab.
|
|
|
|
Edit a volume
|
|
~~~~~~~~~~~~~
|
|
|
|
#. Log in to the dashboard.
|
|
|
|
#. Select the appropriate project from the drop down menu at the top left.
|
|
|
|
#. On the :guilabel:`Project` tab, open the :guilabel:`Volumes` tab and
|
|
click :guilabel:`Volumes` category.
|
|
|
|
#. Select the volume that you want to edit.
|
|
|
|
#. In the :guilabel:`Actions` column, click :guilabel:`Edit Volume`.
|
|
|
|
#. In the :guilabel:`Edit Volume` dialog box, update the name and description
|
|
of the volume.
|
|
|
|
#. Click :guilabel:`Edit Volume`.
|
|
|
|
.. note::
|
|
|
|
You can extend a volume by using the :guilabel:`Extend Volume`
|
|
option available in the :guilabel:`More` dropdown list and entering the
|
|
new value for volume size.
|
|
|
|
Delete a volume
|
|
~~~~~~~~~~~~~~~
|
|
|
|
When you delete an instance, the data in its attached volumes is not
|
|
deleted.
|
|
|
|
#. Log in to the dashboard.
|
|
|
|
#. Select the appropriate project from the drop down menu at the top left.
|
|
|
|
#. On the :guilabel:`Project` tab, open the :guilabel:`Volumes` tab and
|
|
click :guilabel:`Volumes` category.
|
|
|
|
#. Select the check boxes for the volumes that you want to delete.
|
|
|
|
#. Click :guilabel:`Delete Volumes` and confirm your choice.
|
|
|
|
A message indicates whether the action was successful.
|