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Create Volume

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.

Requirements​

The full documentation can be found on the openstack website

Create Volume command​

openstack volume create
    [--size <size>]
    [--type <volume-type>]
    [--image <image> | --snapshot <snapshot> | --source <volume> | --source-replicated <replicated-volume>]
    [--description <description>]
    [--user <user>]
    [--project <project>]
    [--availability-zone <availability-zone>]
    [--consistency-group <consistency-group>]
    [--property <key=value> [...] ]
    [--hint <key=value> [...] ]
    [--multi-attach]
    [--bootable | --non-bootable]
    [--read-only | --read-write]
    <name>

All parameters are explained here #create-volume

Create​

We will create a volume with the size of 100 GB and the NVMe type(it is also possible to create HDD volumes)

openstack volume create \
    --size 100 \
    --type NVMe \
    volume-nvme-100gb
The output shows that the volume is in creation status
+---------------------+--------------------------------------+
| Field               | Value                                |
+---------------------+--------------------------------------+
| attachments         | []                                   |
| availability_zone   | nova                                 |
| bootable            | false                                |
| consistencygroup_id | None                                 |
| created_at          | 2021-09-29T12:14:16.000000           |
| description         | None                                 |
| encrypted           | False                                |
| id                  | 761c0e3e-ad82-48a7-9b76-34c70c46dd96 |
| multiattach         | False                                |
| name                | volume-nvme-100gb                    |
| properties          |                                      |
| replication_status  | None                                 |
| size                | 100                                  |
| snapshot_id         | None                                 |
| source_volid        | None                                 |
| status              | creating                             |
| type                | NVMe                                 |
| updated_at          | None                                 |
| user_id             | 063459e21cd4432e86cf376c34e2b9ed     |
+---------------------+--------------------------------------+

List volumes​

openstack volume list
+--------------------------------------+-------------------+-----------+------+--------------+
| ID                                   | Name              | Status    | Size | Attached to  |
+--------------------------------------+-------------------+-----------+------+--------------+
| 761c0e3e-ad82-48a7-9b76-34c70c46dd96 | volume-nvme-100gb | available |  100 |              |
...

You now have a volume that can be attached to a server.

The volume will appear in the Cloudify.ro dashboard within minutes of creation.