公开(公告)号：US20140372832A1

公开(公告)日：2014-12-18

申请号：US14307372

申请日：2014-06-17

Applicant: NetApp, Inc.

Inventor： Yong Cho ,  Maya Palem ,  Vignesh Sukumar ,  John K. Edwards ,  David Grunwald ,  Andy Kahn

IPC: G06F11/10 ,  G06F17/30 ,  H04L29/08

CPC classification number: G06F11/1076 ,  G06F17/3007 ,  H04L67/1097

Abstract: A network storage server includes a tool for detecting and fixing errors while the network storage server remains online (available for servicing client requests), which includes enabling a user to approve or disapprove remedial changes before the changes are committed. The technique bypasses the usual consistency point process for new or modified data blocks representing potential remedial changes. At a consistency point, dirty data blocks representing the potential remedial changes are written to a change log file residing outside the volume. The modified data blocks are written in sequential order to logical blocks of the change log file. In response to a user input indicating that a potential change should be committed, the corresponding modified data blocks are read from the change log file in the order in which they were written to the change log file, and they are written to persistent storage in that order.

Abstract translation: 网络存储服务器包括用于在网络存储服务器保持联机（可用于服务客户端请求）的情况下检测和修复错误的工具，其中包括使用户在更改发生之前批准或不批准补救更改。 该技术绕过代表潜在补救变化的新的或修改的数据块的通常一致性点过程。 在一致性点上，将表示潜在补救措施更改的脏数据块写入驻留在卷外的更改日志文件。 经修改的数据块按顺序写入变更日志文件的逻辑块。 响应于指示应该提交潜在变化的用户输入，从更改日志文件中读取相应的修改后的数据块，并将它们写入到更改日志文件中，并将它们写入永久存储器 订购。

公开(公告)号：US20150046504A1

公开(公告)日：2015-02-12

申请号：US14522951

申请日：2014-10-24

Applicant: NetApp, Inc.

Inventor： John K. Edwards

IPC: G06F17/30

CPC classification number: G06F17/30233 ,  G06F3/0604 ,  G06F3/061 ,  G06F3/0631 ,  G06F3/064 ,  G06F3/067 ,  G06F3/0689 ,  G06F17/30091 ,  Y10S707/99943 ,  Y10S707/99952 ,  Y10S707/99953 ,  Y10S707/99956

Abstract: A write allocation technique extends a conventional write allocation procedure employed by a write anywhere file system of a storage system. A write allocator of the file system implements the extended write allocation technique in response to an event in the file system. The extended write allocation technique efficiently allocates blocks, and frees blocks, to and from a virtual volume (vvol) of an aggregate. The aggregate is a physical volume comprising one or more groups of disks, such as RAID groups, underlying one or more vvols of the storage system. The aggregate has its own physical volume block number (pvbn) space and maintains metadata, such as block allocation structures, within that pvbn space. Each vvol also has its own virtual volume block number (vvbn) space and maintains metadata, such as block allocation structures, within that vvbn space. The inventive technique extends input/output efficiencies of the conventional write allocation procedure to comport with an extended file system layout of the storage system.

Abstract translation: 写分配技术扩展了存储系统的写任意文件系统所采用的常规写分配过程。 文件系统的写分配器响应于文件系统中的事件实现扩展写分配技术。 扩展写分配技术有效地分配块，并将块从聚合体的虚拟卷（vvol）中分离出来。 聚合是包含一组或多组磁盘的物理卷，例如RAID组，存储系统的一个或多个vvol。 聚合具有自己的物理卷块数（pvbn）空间，并在该pvbn空间内维护诸如块分配结构的元数据。 每个vvol还具有自己的虚拟卷块号（vvbn）空间，并在该vvbn空间内维护诸如块分配结构的元数据。 本发明的技术扩展了常规写入分配过程的输入/输出效率，以与存储系统的扩展文件系统布局相匹配。

公开(公告)号：US08825963B1

公开(公告)日：2014-09-02

申请号：US13863316

申请日：2013-04-15

Applicant: NetApp. Inc.

Inventor： John K. Edwards ,  Keith A. Smith ,  Jiri Schindler ,  Steven R. Kleiman

IPC: G06F13/00 ,  G06F17/30

CPC classification number: G06F17/30091 ,  G06F3/0611 ,  G06F3/064 ,  G06F3/067 ,  G06F11/1076

Abstract: A storage system provides highly flexible data layouts that can be tailored to various different applications and use cases. The system dynamically balances performance with block sharing, based on service level objectives (SLOs). The system defines several types of data containers, including “regions”, “logical extents” and “slabs”. Each region includes one or more logical extents. Allocated to each logical extent is at least part of one or more slabs allocated to the region that includes the extent. Each slab is a set of blocks of storage from one or more physical storage devices. The slabs can be defined from a heterogeneous pool of physical storage. The system also maintains multiple “volumes” above the region layer. Each volume includes one or more logical extents from one or more regions. Layouts of the extents within the regions are not visible to any of the volumes.

Abstract translation: 存储系统提供高度灵活的数据布局，可以针对各种不同的应用程序和用例进行定制。 系统根据服务水平目标（SLO）将性能与块共享动态平衡。 系统定义了几种类型的数据容器，包括“区域”，“逻辑盘区”和“板”。 每个区域包括一个或多个逻辑盘区。 分配到每个逻辑范围的至少一部分是分配给包含该范围的区域的一个或多个slab。 每个平板是来自一个或多个物理存储设备的一组存储块。 板可以从物理存储的异构池定义。 该系统还在区域层之上维护多个“体积”。 每个卷包括来自一个或多个区域的一个或多个逻辑盘区。 区域内的区域的布局对于任何卷都不可见。