公开(公告)号：WO2006116293A2

公开(公告)日：2006-11-02

申请号：PCT/US2006/015442

申请日：2006-04-24

Applicant: NETWORK APPLIANCE, INC.

Inventor： LANGO, Jason,Ansel ,  CHO, Yong, Eun ,  EASTHAM, Paul, Christoper ,  ZHENG, Ling ,  MANLEY, Stephen, L. ,  EDWARDS, John, W., Jr. ,  ENGLISH, Robert, M. ,  ACKAOUY, Emmanuel

IPC: G06F11/14 ,  G06F11/20

CPC classification number: G06F11/1435 ,  G06F11/1464 ,  G06F11/1469

Abstract: A technique is disclosed for restoring data of sparse volumes, where one or more block pointers within the file system structure are marked as ABSENT, and fetching the appropriate data from an alternate location on demand. Client data access requests to the local storage system initiate a restoration of the data from a backing store as required. A demand generator can also be used to restore the data as a background process by walking through the sparse volume and restoring the data of absent blocks. A pump module is also disclosed to regulate the access of the demand generator. Once all the data has been restored, the volume contains all data locally, and is no longer a sparse volume.

Abstract translation: 公开了一种用于恢复稀疏卷的数据的技术，其中文件系统结构中的一个或多个块指针被标记为ABSENT，并且根据需要从备用位置获取适当的数据。 对本地存储系统的客户端数据访问请求根据需要启动从后台存储器恢复数据。 还可以使用需求生成器通过遍历稀疏卷并恢复缺席块的数据来将数据恢复为后台进程。 还公开了一种泵模块来调节需求发生器的通路。 一旦所有数据都已恢复，卷将包含本地的所有数据，并且不再是稀疏卷。

公开(公告)号：EP1882223A2

公开(公告)日：2008-01-30

申请号：EP06751225.1

申请日：2006-04-24

Applicant: NETWORK APPLIANCE, INC.

Inventor： LANGO, Jason,Ansel ,  CHO, Yong, Eun ,  EASTHAM, Paul, Christoper ,  ZHENG, Ling ,  MANLEY, Stephen, L. ,  EDWARDS, John, W., Jr. ,  ENGLISH, Robert, M. ,  ACKAOUY, Emmanuel

IPC: G06F11/14 ,  G06F11/20

CPC classification number: G06F11/1435 ,  G06F11/1464 ,  G06F11/1469

Abstract: A technique is disclosed for restoring data of sparse volumes, where one or more block pointers within the file system structure are marked as ABSENT, and fetching the appropriate data from an alternate location on demand. Client data access requests to the local storage system initiate a restoration of the data from a backing store as required. A demand generator can also be used to restore the data as a background process by walking through the sparse volume and restoring the data of absent blocks. A pump module is also disclosed to regulate the access of the demand generator. Once all the data has been restored, the volume contains all data locally, and is no longer a sparse volume.

公开(公告)号：EP1882223B1

公开(公告)日：2009-08-19

申请号：EP06751225.1

申请日：2006-04-24

Applicant: NETWORK APPLIANCE, INC.

Inventor： LANGO, Jason,Ansel ,  CHO, Yong, Eun ,  EASTHAM, Paul, Christoper ,  ZHENG, Ling ,  MANLEY, Stephen, L. ,  EDWARDS, John, W., Jr. ,  ENGLISH, Robert, M. ,  ACKAOUY, Emmanuel

IPC: G06F11/14 ,  G06F11/20

CPC classification number: G06F11/1435 ,  G06F11/1464 ,  G06F11/1469

Abstract: A technique is disclosed for restoring data of sparse volumes, where one or more block pointers within the file system structure are marked as ABSENT, and fetching the appropriate data from an alternate location on demand. Client data access requests to the local storage system initiate a restoration of the data from a backing store as required. A demand generator can also be used to restore the data as a background process by walking through the sparse volume and restoring the data of absent blocks. A pump module is also disclosed to regulate the access of the demand generator. Once all the data has been restored, the volume contains all data locally, and is no longer a sparse volume.