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How to Resize Vultr Block Storage Volume

Updated on 08 April, 2026

Learn how to increase the capacity of your Vultr Block Storage volume to accommodate growing data needs.

Resizing a Vultr Block Storage volume allows you to scale up your storage needs when your data grows. For instance, you can scale the storage size from 80 GB to 160 GB to create more room for business assets like databases, images, audio, and video. You can't shrink a Vultr Block Storage volume to a smaller size unless you create a new instance and copy over the files.

Resizing a Block Storage volume involves two steps:

  1. Resize the volume using the Vultr Console, API, CLI, or Terraform.
  2. Expand the filesystem on the attached instance to use the new space.

Resize the Volume

Follow this guide to resize a Vultr Block Storage volume using the Vultr Console, API, CLI or Terraform.

  • Vultr Console
  • Vultr API
  • Vultr CLI
  • Terraform
  1. Navigate to Products and select Cloud Storage.
  2. Click Block Storage. Then, select the target Vultr Block Storage volume.
  3. Click the current storage size. For instance, 80 GB.
  4. Enter a new size in GB. For instance, 160. Type YES to confirm and click Continue.

  1. Send a GET request to the List Block Storages endpoint and note the Vultr Block Storage volume ID.

    console 
    $ curl "https://api.vultr.com/v2/blocks" \
    -X GET \
    -H "Authorization: Bearer ${VULTR_API_KEY}"

  2. Send a PATCH request to the Update Block Storage endpoint, specify a Vultr Block storage volume ID, and a new size in GB.

    console 
    $ curl "https://api.vultr.com/v2/blocks/block_storage_id" \
    -X PATCH \
    -H "Authorization: Bearer ${VULTR_API_KEY}" \
    -H "Content-Type: application/json" \
    --data '{       
        "size_gb": 160
    }'

    Visit the Update Block Storage endpoint to view additional attributes to add to your request.

  1. List all Vultr Block Storage volumes and note the ID. For instance, 6856bb78-e67b-416c-8fc1-2473c66fa016.

    console 
    $ vultr-cli block-storage list

  2. Specify a Vultr Block Storage volume ID and the new storage size in GB.

    console 
    $ vultr-cli block-storage resize block_storage_id \
--size=160

    Run vultr-cli block-storage resize --help to view all options.

  1. Open your Terraform configuration for the existing Block Storage resource.

  2. Update the size_gb argument with the new volume size.

    terraform 
    resource "vultr_block" "remote_block_storage" {
    label      = "Remote-Block-Storage"
    region     = "ewr"
    block_type = "high_perf"
    size_gb    = 160  # Updated size
}

  3. Apply the configuration and observe the following output:

    Apply complete! Resources: 0 added, 1 changed, 0 destroyed.

Expand the Filesystem

After resizing the volume, you must expand the filesystem on the attached instance to use the additional space.

  1. Connect to your instance via SSH.

  2. Verify the block storage device path. For example, /dev/vdb.

    console 
    $ lsblk

  3. If the block storage uses a partition (for example, /dev/vdb1), expand the partition using growpart.

    console 
    $ sudo growpart /dev/vdb 1

  4. Resize the filesystem based on the filesystem type.

    • For ext4 filesystems:

      console 
      $ sudo resize2fs /dev/vdb1

    • For XFS filesystems:

      console 
      $ sudo xfs_growfs /mount/point

  5. Verify the new size is available.

    console 
    $ df -h

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