acepanel.github.io/zh_TW/advanced/container/volume.md

Volume

Volumes are Docker-managed data storage used to persist container data. Compared to directly mounting host directories, volumes are managed by Docker, making them more secure and portable.

Volume List

Go to Container > Volume tab to view the volume list.

The list displays the following information:

• Name: Volume name
• Driver: Storage driver
• Scope: Volume scope
• Mount Point: Actual storage path of the volume on the host
• Created Time: Creation time
• Actions: Delete

Create Volume

1. Click the Create Volume button
2. Enter volume name
3. Select driver (default local)
4. Click Create

Using Volumes

Mount Volume When Creating Container

When creating a container, add volume mounts in the Volume option:

• volume_name:container_path - Use named volume
• host_path:container_path - Directly mount host directory

For example:

• mysql_data:/var/lib/mysql - Mount mysql_data volume to container's /var/lib/mysql
• /opt/ace/data:/data - Mount host's /opt/ace/data directory to container's /data

Volume vs Bind Mount

Feature	Volume	Bind Mount
Management	Docker managed	User managed
Storage Location	Docker data directory	Any host path
Backup	Requires Docker commands	Directly backup directory
Portability	High	Depends on host path
Use Cases	Data that needs persistence like databases	Configuration files, code directories

Delete Volume

Select a volume and click the Delete button to delete the volume.

:::danger Warning Deleting a volume will permanently delete all data in the volume. This operation cannot be undone! :::

:::warning Note If the volume is being used by containers, you need to delete the related containers before deleting the volume. :::

Clean Volumes

Click Clean Volumes to delete all unused volumes and free up disk space.

:::tip Note Please confirm that unused volumes do not contain important data before cleaning. :::

Data Backup

Volume data is stored in the Docker data directory (usually /var/lib/docker/volumes/). You can backup through the following methods:

1. Use docker run to create a temporary container that mounts the volume and exports data
2. Directly backup the Docker data directory (requires stopping Docker service)
3. (In development) Use AcePanel's Backup Feature for backup