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

• Install Openstack CLI
• Authentication

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.