Techniques for data persistence across instances of cloud shell layers

Techniques are provided for persisting user data across containment layer instances. The techniques include a method in which a computer system receives a request to reserve a block volume, the request received from a session manager service. The method further includes reserving a chunk volume, identifying a datacenter identifier of the chunk volume, returning the datacenter identifier of the chunk volume to the session manager service, attaching the chunk volume to the volume management team machine, receiving an instruction from the session manager service to release the chunk volume, creating a backup of the chunk volume including data stored in the chunk volume, and releasing the chunk volume. 提供了用于跨安全壳层实例持久化用户数据的技术。所述技术包括一种方法，其中计算机系统接收预留块卷的请求，该请求是从会话管理器服务接收的。该方法还包括预留块卷，识别块卷的数据中心标识符，将块卷的数据中心标识符返回给会话管理器服务，将块卷附加到卷管理队机器，接收来自会话管理器服务的释放块卷的指令，创建包括存储在块卷中的数据的块卷的备份，以及释放块卷。