Glance based cinder volume protection plugin¶

Volume glance protection plugin¶

Add a new volume protection plugin which do the backup and restore of cinder volumes by glance service. Volume data would be stored in the bank as chunks like what image protection plugin do.

Steps of protect operation: 1. Create a temporary snapshot to the volume you want to backup 2. Create a temporary volume based on the snapshot in step 1 3. Create a temporary glance image of the temporary volume 4. Download the temporary image and save it to karbor bank 5. Clean all the temporary resources in step 1 to 4 6. Save the backup metadata to bank

Steps of restore operation: 1. Create an image with the volume data in bank 2. Create a volume with the created image in step 1 3. Wait for the volume status being available 4. Clean the created image in step 1

Steps in delete operation: 1. List and delete the objects (volume data and metadata) in bank.

Volume glance protection plugin schema:¶

OPTIONS_SCHEMA = {
    "title": "Volume Glance Protection Options",
    "type": "object",
    "properties": {
        "backup_name": {
            "type": "string",
            "title": "Backup Name",
            "description": "The name of the backup.",
            "default": None
        },
        "description": {
            "type": "string",
            "title": "Description",
            "description": "The description of the backup."
        }
    },
    "required": ["backup_name"]
}

RESTORE_SCHEMA = {
    "title": "Volume Glance Protection Restore",
    "type": "object",
    "properties": {
        "restore_name": {
            "type": "string",
            "title": "Restore Resource Name",
            "description": "The name of the restore resource ",
            "default": None
        },
    },
    "required": ["restore_name"]
}

Alternatives¶

None

Data model impact¶

None.

REST API impact¶

None

Security impact¶

None

Notifications impact¶

None

Other end user impact¶

None

Performance Impact¶

This plugin may be slower than cinder backup and cinder snapshot plugin.

Other deployer impact¶

Add the volume by glance protection plugin endpoint to setup.cfg. Add the volume by glance protection plugin configuration to provider file.

Developer impact¶

None

Assignee(s)¶

Primary assignee: Pengju Jiao <jiaopengju@cmss.chinamobile.com>

Work Items¶

• Write volume by glance protection plugin
• Write tests