Published on May 9, 2026
Kubernetes has long provided users with the ability to manage persistent storage through various features and APIs. The existing VolumeSnapshot API has enabled snapshotting of single volumes to prevent data loss or corruption. However, as applications grow more complex, the need for managing multiple volumes as a cohesive unit has emerged.
The release of Kubernetes v1.36 marks a pivotal shift with Volume Group Snapshots moving from beta to General Availability. This enhanced feature allows users to create crash-consistent snapshots of multiple volumes simultaneously, addressing the issues that arise when snapshots are taken at different times. Notably, this release benefits users reliant on Container Storage Interface (CSI) volume drivers.
Volume Group Snapshots use specific APIs that allow for the management of groups of snapshots. Administrators can create a VolumeGroupSnapshot, while the snapshot controller handles the underlying operations. This functionality promotes seamless recovery processes, particularly for applications that rely on multiple interdependent volumes, thus improving workload consistency and reliability.