Scaleway Block Storage

Scaleway block storage resources represent persistent block volumes managed by Scaleway. Plakar Control Plane backs up block storages by triggering a Scaleway snapshot export, which saves the volume as a QCOW2 image to a Scaleway Object Storage bucket, then backs up that image into the Kloset store. Scaleway Block Storage resources currently support backup only; restoring a block volume is not available.

A dedicated Scaleway Object Storage bucket is required for this process. We recommend creating a bucket specifically for this purpose, as it is also used when backing up other Scaleway resources such as instances.

Inventory Management

Managed inventories can discover Scaleway Block Storage volumes automatically once connected to your Scaleway project. Scaleway Block Storage resources are only discovered by the Scaleway inventory and cannot be setup by a self-managed inventory.

Backup flow

flowchart TD
  subgraph Scaleway["Scaleway Project"]
    Volume["Block Storage Volume"]
    Snapshot["Snapshot Export
QCOW2 image"]

    subgraph Bucket["Object Storage Bucket
Temporary staging area"]
      Image["Exported QCOW2 image"]
    end
  end

  subgraph Plakar["Plakar Control Plane"]
    Source["Scaleway Block Storage
Source app"]
    Backup["Backup process
Encrypt & deduplicate"]
  end

  Store["Kloset Store"]

  Source -->|"uses Scaleway API"| Volume
  Volume --> Snapshot
  Snapshot --> Image

  Image -->|"read from staging bucket"| Backup
  Backup --> Store

Source Configuration

The following settings are available when configuring a source app.

• Access Key: Required. The access key used to authenticate with Scaleway. See the documentation on Managing IAM Policies and API Keys on Scaleway for instructions on how to set up the permissions and generate an access key and secret key.
• Secret Key: Required. The secret key used to authenticate with Scaleway.
• Bucket: Required. The Scaleway Object Storage bucket name, used as a temporary staging area when exporting block storage snapshots. This bucket must exist before configuring the resource. We recommend using a dedicated bucket for Plakar Control Plane operations rather than a general-purpose bucket.

Permissions

Plakar Control Plane requires a set of IAM permissions on your Scaleway project to access block volumes and the staging Object Storage bucket. These permissions should be attached to an IAM application that Plakar Control Plane will use to authenticate. See the documentation on Managing IAM Policies and API Keys on Scaleway for instructions on how to set up the permissions and generate an access key and secret key.