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78 lines
2.8 KiB
Markdown
78 lines
2.8 KiB
Markdown
# Volume
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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.
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## Volume List
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Go to **Container** > **Volume** tab to view the volume list.
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The list displays the following information:
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- **Name**: Volume name
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- **Driver**: Storage driver
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- **Scope**: Volume scope
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- **Mount Point**: Actual storage path of the volume on the host
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- **Created Time**: Creation time
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- **Actions**: Delete
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## Create Volume
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1. Click the **Create Volume** button
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2. Enter volume name
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3. Select driver (default local)
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4. Click Create
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## Using Volumes
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### Mount Volume When Creating Container
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When creating a container, add volume mounts in the **Volume** option:
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- **volume_name:container_path** - Use named volume
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- **host_path:container_path** - Directly mount host directory
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For example:
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- `mysql_data:/var/lib/mysql` - Mount mysql_data volume to container's /var/lib/mysql
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- `/opt/ace/data:/data` - Mount host's /opt/ace/data directory to container's /data
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### Volume vs Bind Mount
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| Feature | Volume | Bind Mount |
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|------------------|--------------------------------------------|---------------------------------------|
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| Management | Docker managed | User managed |
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| Storage Location | Docker data directory | Any host path |
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| Backup | Requires Docker commands | Directly backup directory |
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| Portability | High | Depends on host path |
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| Use Cases | Data that needs persistence like databases | Configuration files, code directories |
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## Delete Volume
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Select a volume and click the **Delete** button to delete the volume.
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::: danger Warning
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Deleting a volume will permanently delete all data in the volume. This operation cannot be undone!
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:::
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::: warning Note
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If the volume is being used by containers, you need to delete the related containers before deleting the volume.
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:::
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## Clean Volumes
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Click **Clean Volumes** to delete all unused volumes and free up disk space.
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::: tip Note
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Please confirm that unused volumes do not contain important data before cleaning.
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:::
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## Data Backup
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Volume data is stored in the Docker data directory (usually `/var/lib/docker/volumes/`). You can backup through the following methods:
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1. Use `docker run` to create a temporary container that mounts the volume and exports data
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2. Directly backup the Docker data directory (requires stopping Docker service)
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3. (In development) Use AcePanel's [Backup Feature](../backup) for backup
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