Compute
Elastic Cloud Server
Huawei Cloud Flexus
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Cloud Phone Host
Huawei Cloud EulerOS
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
VPC Endpoint
Cloud Connect
Enterprise Router
Enterprise Switch
Global Accelerator
Management & Governance
Cloud Eye
Identity and Access Management
Cloud Trace Service
Resource Formation Service
Tag Management Service
Log Tank Service
Config
OneAccess
Resource Access Manager
Simple Message Notification
Application Performance Management
Application Operations Management
Organizations
Optimization Advisor
IAM Identity Center
Cloud Operations Center
Resource Governance Center
Migration
Server Migration Service
Object Storage Migration Service
Cloud Data Migration
Migration Center
Cloud Ecosystem
KooGallery
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP Filing
Support Plans
My Credentials
Customer Operation Capabilities
Partner Support Plans
Professional Services
Analytics
MapReduce Service
Data Lake Insight
CloudTable Service
Cloud Search Service
Data Lake Visualization
Data Ingestion Service
GaussDB(DWS)
DataArts Studio
Data Lake Factory
DataArts Lake Formation
IoT
IoT Device Access
Others
Product Pricing Details
System Permissions
Console Quick Start
Common FAQs
Instructions for Associating with a HUAWEI CLOUD Partner
Message Center
Security & Compliance
Security Technologies and Applications
Web Application Firewall
Host Security Service
Cloud Firewall
SecMaster
Anti-DDoS Service
Data Encryption Workshop
Database Security Service
Cloud Bastion Host
Data Security Center
Cloud Certificate Manager
Edge Security
Situation Awareness
Managed Threat Detection
Blockchain
Blockchain Service
Web3 Node Engine Service
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
Storage
Object Storage Service
Elastic Volume Service
Cloud Backup and Recovery
Storage Disaster Recovery Service
Scalable File Service Turbo
Scalable File Service
Volume Backup Service
Cloud Server Backup Service
Data Express Service
Dedicated Distributed Storage Service
Containers
Cloud Container Engine
SoftWare Repository for Container
Application Service Mesh
Ubiquitous Cloud Native Service
Cloud Container Instance
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GeminiDB
GaussDB
Distributed Database Middleware
Database and Application Migration UGO
TaurusDB
Middleware
Distributed Cache Service
API Gateway
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
Multi-Site High Availability Service
EventGrid
Dedicated Cloud
Dedicated Computing Cluster
Business Applications
Workspace
ROMA Connect
Message & SMS
Domain Name Service
Edge Data Center Management
Meeting
AI
Face Recognition Service
Graph Engine Service
Content Moderation
Image Recognition
Optical Character Recognition
ModelArts
ImageSearch
Conversational Bot Service
Speech Interaction Service
Huawei HiLens
Video Intelligent Analysis Service
Developer Tools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Content Delivery & Edge Computing
Content Delivery Network
Intelligent EdgeFabric
CloudPond
Intelligent EdgeCloud
Solutions
SAP Cloud
High Performance Computing
Developer Services
ServiceStage
CodeArts
CodeArts PerfTest
CodeArts Req
CodeArts Pipeline
CodeArts Build
CodeArts Deploy
CodeArts Artifact
CodeArts TestPlan
CodeArts Check
CodeArts Repo
Cloud Application Engine
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive

Versioning

Updated on 2024-05-31 GMT+08:00

Scenarios

OBS can store multiple versions of an object. You can quickly search for and restore different versions or restore data in the event of accidental deletions or application faults.

By default, versioning is disabled for new OBS buckets. New objects will overwrite existing objects in case they have the same names.

Constraints

When you enable WORM for a bucket, OBS automatically enables versioning and versioning cannot be suspended later for that bucket.

Enabling Versioning

  • Enabling versioning does not change the versions or contents of existing objects in the bucket. The version ID of an object is null before versioning is enabled. If a namesake object is uploaded after versioning is enabled, a version ID will be assigned to the object. For details, see Figure 1.
    Figure 1 Versioning (enabled vs. disabled)
  • With versioning enabled, OBS automatically allocates a unique version ID to a newly uploaded object. When an object with the same name as an existing object is uploaded again, both objects are stored in OBS with the same name but different version IDs. For details, see Figure 2.
    Figure 2 Versioning (different version IDs for objects with the same name)
    Table 1 Version description

    Version

    Description

    Latest version

    After versioning is enabled, each operation on an object will result in saving of the object with a new version ID. The version ID generated upon the latest operation is called the latest version.

    Historical Version

    After versioning is enabled, each operation on an object will result in saving of the object with a new version ID. Version IDs generated upon operations other than the latest operation are called historical versions.

  • The latest objects in a bucket are returned by default after a GET Object request.
  • Objects can be downloaded by version IDs. By default, the latest object is downloaded if the version ID is not specified.
  • You can select an object and click Delete on the right to delete the object. After the object is deleted, OBS generates a Delete Marker with a unique version ID for the deleted object, and the deleted object is displayed in the Deleted Objects list. If you try to access the deleted object, a 404 error will be returned.
    Figure 3 Object with a delete marker
  • You can recover a deleted object by deleting the version having a delete marker.
  • After an object is deleted, you can specify the version number in Deleted Objects to permanently delete the object of the specified version.
  • An object is displayed either in the object list or the list of deleted objects. It will never be displayed in both the lists at the same time.

    For example, after object A is uploaded and deleted, it will be displayed in the Deleted Objects list. If you upload an object named A again, the object A will be displayed in the Objects list, and the previously deleted object A will no longer be displayed in the Deleted Objects list. For details, see Figure 4.

    Figure 4 Uploading a namesake object after the original one is deleted
  • All object versions except those with Delete Marker stored in OBS are charged.

Suspending Versioning

Once the versioning function is enabled, it can be suspended but cannot be disabled. Once versioning is suspended, version IDs will no longer be allocated to newly uploaded objects. If an object with the same name already exists and does not have a version ID, the object will be overwritten.

Figure 5 Object versions in the scenario when versioning is suspended

If versions of objects in a bucket do not need to be controlled, you can suspend the versioning function.

  • Historical versions will be retained in OBS. If you do not need these historical versions, manually delete them.
  • Objects can be downloaded by version IDs. By default, the latest object is downloaded if the version ID is not specified.
  • All historical object versions except those with Delete Marker stored in OBS are charged.

Differences Between Scenarios When Versioning Is Suspended and Disabled

If you delete an object when versioning is suspended, a null version with the Delete Marker is generated regardless of whether the object has historical versions. But, if versioning is disabled, the same operation will not generate a version with the Delete Marker.

NOTE:

After versioning is enabled, each historical version of an object is stored and occupies storage space. OBS charges storage fees for all versions. Exercise caution to avoid extra storage fees.

How to Use

You can configure versioning through the OBS Console, APIs, and SDKs.

Tool

Reference

OBS Console

Configuring Versioning

SDKs

OBS supports software development kits (SDKs) in multiple languages. For details, see the corresponding developer guide on the SDK Overview page.

API

Configuring Versioning for a Bucket

We use cookies to improve our site and your experience. By continuing to browse our site you accept our cookie policy. Find out more

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback