storage-operator release notes - Container Service for Kubernetes

The storage-operator component provides automatic volume expansion, online disk resizing, storage resource monitoring, and data pre-populating (populating high-performance volumes with data from Object Storage Service (OSS)). These features streamline the management of Alibaba Cloud storage resources in Container Service for Kubernetes (ACK) clusters. This topic explains how to use storage-operator and lists its release changes.

Introduction

storage-operator automates the lifecycle management of storage components in ACK clusters. It integrates multiple advanced storage features to improve the operational efficiency of your storage resources. By default, storage-operator is deployed in your cluster as a Deployment and includes the following features:

Volume expansion: Manages the automatic expansion of cloud disk and NAS volumes.
To disable this feature, add the feature gate Expander=false.
Cloud disk resizing: Modifies disk configurations.
To disable this feature, add the feature gate DiskVolumeUpgradeControl=false.
Stateful application migration: Migrates stateful applications across zones.
To disable this feature, add the feature gate ApplicationMigrationAcrossAZ=false.
Data pre-populating: Allows you to specify an OSS bucket as a data source when creating a persistent volume (PV). The system then automatically pre-populates data from the OSS bucket into a newly created high-performance volume, such as a Cloud Parallel File System (CPFS) volume. This is ideal for use cases such as AI training and big data analytics that require warming up cold data from OSS to a high-performance file system to accelerate computation jobs.
To enable this feature, add the feature gate VolumePopulator=true. When enabled, the system creates a namespace named ack-volume-populator to run temporary persistent volume claims (PVCs) and pods generated during the data pre-population process.

Change log

May 2026

Version

Image address

Changes

Date

Impact

v1.35.3

registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.35.3-75bc289

New features:
- Pod rootfs auto-scaling: Added root file system auto-scaling for ACS Pods.
Improvements:
- Upgraded Go to 1.26 and gRPC to 1.79.3.
- Security update: Upgraded golang.org/x/crypto from 0.41.0 to 0.45.0.
Bug fixes:
- Feature-gates parsing: Fixed a parsing error for the feature-gates parameter in deployment configuration.

May 19, 2026

No impact on workloads.

January 2026

Version	Image address	Changes	Release date	Impact
v1.35.1	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.35.1-4b60408	Added the Volume Populator feature, enabling pre-population of OSS data to high-performance volumes.	January 19, 2026	No impact on workloads.

October 2025

Version	Image address	Description	Release date	Impact
v1.33.2	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.33.2-f32da36	Updated the base image to a distroless image. Fixed an intermittent race condition between goroutines.	October 17, 2025	No impact on workloads.

August 2025

Version	Image address	Description	Release date	Impact
v1.33.1	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.33.1-cb82bad	Split `storage-cnfs` into the managed `cnfs-controller` component, available separately in Add-ons. For backward compatibility, `cnfs-controller` auto-installs when you install or upgrade this component. Removed sub-component management. Integrates the former `storage-auto-expander` and `storage-controller` features; no longer requires a `ConfigMap`. Added feature gates to enable or disable individual features.	August 20, 2025	No impact on workloads.
v1.32.10	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.32.10-aa189c8	Reduced memory footprint of `storage-auto-expander`.	August 8, 2025	No impact on workloads.

May 2025

Version	Image address	Description	Release date	Impact
v1.32.9	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.32.9	Improved security for storage-cnfs and storage-controller by accessing metadata in security hardening mode.	May 14, 2025	No impact on workloads.

March 2025

Version	Image address	Description	Release date	Impact
v1.32.5	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.32.5	Fixed an issue in `storage-cnfs`.	March 31, 2025	No impact on workloads.
v1.32.4	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.32.4	Deprecated `storage-monitor`. Its functionality merged into `storage-cnfs`. `storage-cnfs` now monitors NAS volume capacity and triggers a PVC alert when available capacity drops below 15%. Fixed an issue where `storage-auto-expander` repeatedly expanded NAS volumes.	March 12, 2025	No impact on workloads.

September 2024

Version	Image address	Description	Release date	Impact
v1.31.1	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.31.1	Upgraded `storage-controller` base image to Alpine Linux 3.18. Enabled byte-level NAS capacity monitoring in `storage-monitor`. Fixed issues in `storage-auto-expander` and upgraded its base image to Alpine Linux 3.18.	September 26, 2024	No impact on workloads.

July 2024

Version	Image address	Changes	Release date	Impact
v1.30.2	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.30.2	Optimized component logs.	July 12, 2024	No impact on workloads.

May 2024

Version	Image address	Description	Release date	Impact
v1.30.1	registry-{{regionID}}.ack.aliyuncs.com/acs/storage-operator:v1.30.1	Updated dependencies. Disabled older TLS versions to improve system security.	May 31, 2024	No impact on workloads.

January 2024

Version	Image address	Description	Release date	Impact
v1.28.2-be0cf84-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/storage-operator:v1.28.2-be0cf84-aliyun	Fixed an issue in storage-controller.	January 17, 2024	No impact on workloads.

December 2023

Version	Image address	Description	Release date	Impact
v1.28.1-4e62141-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/storage-operator:v1.28.1-4e62141-aliyun	Fixed issues in storage-monitor. Updated base image to Alpine.	December 25, 2023	No impact on workloads.

October 2023

Version	Image address	Description	Release date	Impact
v1.26.2-1de13b6-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/storage-operator:v1.26.2-1de13b6-aliyun	Updated storage-controller to v1.26.2-639bc21-aliyun to support cross-zone migration of stateful applications using ESSDs. Updated storage-cnfs to v1.24.39-0e24b92-aliyun to enable version control for OSS buckets and automatically create StorageClasses for NAS volumes.	October 25, 2023	No impact on workloads.

July 2023

Version	Image address	Changes	Release date	Impact
v1.26.1-50a1499-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/storage-operator:v1.26.1-50a1499-aliyun	Fixed several monitoring and snapshot issues.	July 2, 2023	No impact on workloads.

February 2023

Version	Image address	Description	Release date	Impact
v1.24.102-b1cfa3d-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/storage-operator:v1.24.102-b1cfa3d-aliyun	Added storage-controller to support changing cloud disk types.	February 6, 2023	No impact on workloads.

November 2022

Version	Image address	Description	Release date	Impact
v1.24.97-3eb7acc-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/storage-operator:v1.24.97-3eb7acc-aliyun	Updated storage-snapshot-manager to v1.22.1-464f816-aliyun. Fixed an intermittent crash of storage-snapshot-manager in clusters with virtual nodes.	November 2, 2022	No impact on workloads.

September 2022

Version	Image address	Description	Release date	Impact
v1.24.95-e2d0756-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/storage-operator:v1.24.95-e2d0756-aliyun	Updated `storage-cnfs-controller` to v1.24.31-262bf31-aliyun.	September 27, 2022	No impact on workloads.

August 2022

Version	Image address	Description	Release date	Impact
v1.22.91-c4d5ab4-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/csi-plugin:v1.22.91-c4d5ab4-aliyun	Added storage metric collection.	August 25, 2022	No impact on workloads.

July 2022

Version	Image address	Description	Release date	Impact
v1.22.86-041b094-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/csi-plugin:v1.22.86-041b094-aliyun	Added CNFS client acceleration (disabled by default). See Enable the distributed caching feature of the CNFS client. Fixed an array index out-of-bounds error in the auto scaling component when disk usage exceeds 100%.	July 13, 2022	No impact on workloads.

May 2022

Version	Image	Description	Release date	Impact
v1.22.8-aa22537-aliyun	registry.cn-{{region}}.aliyuncs.com/acs/storage-operator:v1.22.8-aa22537-aliyun	Modified the disk snapshot YAML file.	May 13, 2022	No impact on workloads.

April 2022

Version	Image address	Changes	Release date	Impact
v1.22.0.75-5bc07f7-aliyun	registry.cn-{{region}}.aliyuncs.com/acs/storage-operator:v1.22.0.75-5bc07f7-aliyun	Added support for advanced disk snapshots.	2022-04-14	No impact on workloads.

March 2022

Version	Image address	Description	Release date	Impact
v1.18.8.68-9078250-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/storage-operator:v1.18.8.68-9078250-aliyun	Patched vulnerabilities in the CentOS 7 base image.	2022-03-16	No impact on workloads.

December 2021

Version	Image address	Description	Release date	Impact
v1.18.8.67-c1aef60-aliyun	registry.cn-{{regionID}}.aliyuncs.com/acs/storage-operator:v1.18.8.67-c1aef60-aliyun	Fixed slow quota updates and automatic expansion failures in NAS.	December 22, 2021	No impact on workloads.

September 2021

Version	Image address	Changes	Release date	Impact
v1.18.8.60-a5ba617-aliyun	registry-vpc.${region}.aliyuncs.com/acs/storage-operator:v1.18.8.60-a5ba617-aliyun	Enabled quota by default for CNFS-managed NAS to support automatic expansion. Fixed an issue where pods were scheduled to unavailable nodes. Added support for scheduling pods to Linux and non-virtual nodes. Fixed an issue that prevented CNFS status changes.	September 24, 2021	No impact on workloads.

August 2021

Version	Image address	Changes	Release date	Impact
v1.18.8.55-e398ce5-aliyun	registry-vpc.${region}.aliyuncs.com/acs/storage-operator:v1.18.8.55-e398ce5-aliyun	CNFS now supports creating Capacity NAS by default. Setting archiveOnDelete to false in the default CNFS StorageClass now deletes the subdirectory when the PV is deleted. Fixed excessive CPU consumption in storage-monitor.	August 16, 2021	No impact on workloads.

June 2021

Version	Image address	Description	Release date	Impact
v1.18.8.37-c63030b-aliyun	registry-vpc.${region}.aliyuncs.com/acs/storage-operator:v1.18.8.37-c63030b-aliyun	Added support for auto scaling. Added support for CNFS.	June 25, 2021	No impact on workloads.

March 2021

Version

Image address

Changes

Release date

Impact

v1.18.8.28-18cca7b-aliyun

registry-vpc.${region}.aliyuncs.com/acs/storage-operator:v1.18.8.28-18cca7b-aliyun

New features:

Added support for batch snapshots.
Added support for scheduled snapshots.
Added support for cluster monitoring.

March 25, 2021

No impact on workloads.