公开(公告)号：US09916102B1

公开(公告)日：2018-03-13

申请号：US15197064

申请日：2016-06-29

申请人： EMC Corporation

发明人： Ivan Bassov ,  Walter C. Forrester ,  Michal Marko ,  Ahsan Rashid

IPC分类号： G06F12/08 ,  G06F3/06

CPC分类号： G06F3/067 ,  G06F3/0605 ,  G06F3/0631 ,  G06F3/065

摘要： A technique for managing storage space in a data storage system generates liability values on a per-family basis, with each family including files in the file system that are related to one another by snapping. Each family thus groups together files in the file system that share at least some blocks among one another based on snapshot activities. Distinct files that do not share blocks based on snapping are provided in separate families. The file system leverages the snap-based relationships among family members to produce more accurate estimates of liability than would otherwise be feasible.

公开(公告)号：US10013217B1

公开(公告)日：2018-07-03

申请号：US13929879

申请日：2013-06-28

申请人： EMC Corporation

发明人： Jean-Pierre Bono ,  William C. Davenport ,  Miles A. de Forest ,  Walter C. Forrester ,  Michal Marko ,  Alexander Mathews

IPC分类号： G06F3/06

CPC分类号： G06F3/0689 ,  G06F3/0608 ,  G06F3/0626 ,  G06F3/0647 ,  G06F3/0665 ,  G06F16/113

摘要： An improved technique involves providing file system shrink capability by shrinking the size of the volume file in which an upper deck file system is stored. Along these lines, a data storage system, upon receiving a request to shrink an upper deck file system, determines a new address in the upper deck file system, based on an amount the upper deck file system is to be shrunk, to which the end-of-file (EOF) pointer of the volume file will point. The new address will have a smaller distance from the address of the file pointer than the original address to which the EOF pointer points. The data storage system then identifies nonempty data blocks of the upper deck file system that have logical addresses having a larger distance from the address of the file pointer than the second logical address.

公开(公告)号：US09329803B1

公开(公告)日：2016-05-03

申请号：US13931769

申请日：2013-06-28

申请人： EMC Corporation

发明人： Jean-Pierre Bono ,  William C. Davenport ,  Miles A. de Forest ,  Walter C. Forrester ,  Michal Marko ,  Ye Zhang ,  Philippe Armangau

IPC分类号： G06F3/00 ,  G06F3/06

CPC分类号： G06F3/0688 ,  G06F3/0608 ,  G06F3/0611 ,  G06F3/0641 ,  G06F3/0643 ,  G06F3/0665

摘要： A data storage system includes storage devices and a processing subsystem executing software forming a lower-deck file system and an upper-deck file system. The lower-deck file system presents a volume file from which storage is provided to the upper-deck file system, and units of storage of the storage devices are allocable to the upper-deck file system but are not reserved to it. The volume file is thinly provisioned, and additional units of storage are added dynamically to increase its allocated size in response to demand from the upper-deck file system. The lower-deck file system operates in a mapped mode in which a block address in the lower-deck file system is obtained by a generally arbitrary mapping (e.g., an Inode/IB tree) of a block address in the volume file.

摘要翻译： 数据存储系统包括存储设备和执行形成下层文件系统和上层文件系统的软件的处理子系统。 下层文件系统提供一个卷文件，从上层文件系统提供存储，存储设备的存储单元可分配给上层文件系统，但不保留给它。 卷文件被稀疏地配置，并且动态添加额外的存储单元以增加其分配的大小以响应来自上层文件系统的需求。 下层文件系统以映射模式操作，其中通过卷文件中的块地址的大致任意的映射（例如，Inode / IB树）获得下层文件系统中的块地址。

公开(公告)号：US09881016B1

公开(公告)日：2018-01-30

申请号：US14588065

申请日：2014-12-31

申请人： EMC Corporation

发明人： Jean-Pierre Bono ,  Michal Marko ,  Rohit Chawla ,  Ye Zhang ,  William Davenport

IPC分类号： G06F17/30

CPC分类号： G06F17/30153 ,  G06F17/30132 ,  G06F17/30203

摘要： Examples are generally directed towards a file server having a unified file system associated with a unified slice map volume. In one example, the unified file system stores file system metadata and sparse volume metadata within the unified slice map volume. The unified file system performs a unified set of functions using the file system metadata and sparse volume metadata in the unified slice map volume.

公开(公告)号：US09256603B1

公开(公告)日：2016-02-09

申请号：US13931757

申请日：2013-06-28

申请人： EMC Corporation

发明人： Jean-Pierre Bono ,  William C. Davenport ,  Miles A. de Forest ,  Walter C. Forrester ,  Michal Marko ,  Ye Zhang ,  Philippe Armangau

IPC分类号： G06F12/00 ,  G06F17/30

CPC分类号： G06F17/30067 ,  G06F17/30197

摘要： A data storage system includes storage devices and a processing subsystem executing software forming a lower-deck file system and an upper-deck file system. The lower-deck file system presents a volume file from which storage is provided to the upper-deck file system, and units of storage of the storage devices are reserved to the upper-deck file system. The volume file is fully provisioned based on the reserved units of storage so that an out-of-space condition is not presented to the upper-deck file system. Reserved units of storage are dynamically added to the volume file to increase its allocated size in response to demand from the upper-deck file system, and a direct operating mode is used in which a block address in the lower-deck file system is obtained by a predetermined calculation from a corresponding block address in the volume file.

摘要翻译： 数据存储系统包括存储设备和执行形成下层文件系统和上层文件系统的软件的处理子系统。 下层文件系统提供一个卷文件，从该文件向上层文件系统提供存储，存储设备的存储单位保留给上层文件系统。 卷文件基于保留的存储单元完全配置，使得空格不足的条件不会呈现给上层文件系统。 保留的存储单元被动态地添加到卷文件中以根据来自上层文件系统的需求增加其分配的大小，并且使用直接操作模式，其中下层文件系统中的块地址由 来自卷文件中的对应块地址的预定计算。

公开(公告)号：US09690803B1

公开(公告)日：2017-06-27

申请号：US14319634

申请日：2014-06-30

申请人： EMC Corporation

发明人： Jean-Pierre Bono ,  Michal Marko ,  Walter C. Forrester ,  Alexander Mathews ,  James P. Ferrigno ,  Yunfei Chen

IPC分类号： G06F17/30

CPC分类号： G06F17/30182

摘要： A technique for storing support files in a data storage apparatus provides auxiliary files in a container file system. The container file system stores a container file that provides a file-based realization of a data object, such as an entire file system, LUN, or vVOL, for example, and stores one or more auxiliary files in the container file system alongside the container file. Thus, an auxiliary file that supports an application program's operations on a data object resides in the same fault domain with the container file that realizes the data object.

公开(公告)号：US09256629B1

公开(公告)日：2016-02-09

申请号：US13931775

申请日：2013-06-28

申请人： EMC Corporation

发明人： Jean-Pierre Bono ,  William C. Davenport ,  Miles A. de Forest ,  Walter C. Forrester ,  Michal Marko ,  Ye Zhang ,  Philippe Armangau

IPC分类号： G06F17/30

CPC分类号： G06F17/30197 ,  G06F17/30067

摘要： A data storage system includes storage devices and a processing subsystem executing software forming a lower-deck file system and an upper-deck file system. The lower-deck file system presents a volume file from which storage is provided to the upper-deck file system, and units of storage of the storage devices are allocable to the upper-deck file system but not reserved to it. The volume file is thinly provisioned, and additional units of storage are added dynamically to increase its allocated size in response to demand from the upper-deck file system. The lower-deck file system operates in a mapped mode in which a block address in the lower-deck file system is obtained by a generally arbitrary mapping (e.g., an Inode/IB tree) of a block address in the volume file.

摘要翻译： 数据存储系统包括存储设备和执行形成下层文件系统和上层文件系统的软件的处理子系统。 下层文件系统提供一个卷文件，从该文件提供存储到上层文件系统，存储设备的存储单元可分配给上层文件系统，但不保留给它。 卷文件被稀疏地配置，并且动态添加额外的存储单元以增加其分配的大小以响应来自上层文件系统的需求。 下层文件系统以映射模式操作，其中通过卷文件中的块地址的大致任意的映射（例如，Inode / IB树）获得下层文件系统中的块地址。

公开(公告)号：US09256614B1

公开(公告)日：2016-02-09

申请号：US13931764

申请日：2013-06-28

申请人： EMC Corporation

发明人： Jean-Pierre Bono ,  William C. Davenport ,  Miles A. de Forest ,  Walter C. Forrester ,  Michal Marko ,  Ye Zhang ,  Philippe Armangau

IPC分类号： G06F17/30

CPC分类号： G06F17/30312 ,  G06F17/30088 ,  G06F17/30321

摘要： A data storage system employs a multi-level stack including a lower-deck file system and an upper-deck file system providing a file system interface to a file system consumer. The lower-deck file system presents a volume file to provide storage to the upper-deck file system. Storage is reserved to the upper-deck file system, and the volume file is fully provisioned so an out-of-space condition is not presented to the upper-deck file system. In an initial direct operating mode a block address in the lower-deck file system is obtained by a calculation from a corresponding block address in the volume file. Snapshots of a primary volume file are created and stored in respective snapshot volume files. The lower-deck file system transitions into a mapped mode using generally arbitrary mappings of block addresses of the primary volume file and snapshot volume files to obtain corresponding block addresses in the lower-deck file system.

摘要翻译： 数据存储系统采用包括下层文件系统和向文件系统消费者提供文件系统接口的上层文件系统的多层堆栈。 下层文件系统提供卷文件以向上层文件系统提供存储。 存储被保留给上层文件系统，并且卷文件被完全配置，使得空间不足的条件不被呈现给上层文件系统。 在初始直接操作模式中，通过从卷文件中的相应块地址的计算获得下层文件系统中的块地址。 创建主卷文件的快照并存储在相应的快照卷文件中。 下层文件系统通过使用主卷文件和快照卷文件的块地址的大致任意映射来转换为映射模式，以在下层文件系统中获取相应的块地址。