公开(公告)号：US20150317224A1

公开(公告)日：2015-11-05

申请号：US14265592

申请日：2014-04-30

Applicant: NetAPP, Inc.

Inventor： Yong Cho ,  Prachi Deshmukh

IPC: G06F11/20 ,  H04L29/08

CPC classification number: G06F11/2094 ,  G06F3/0619 ,  G06F3/0634 ,  G06F3/0635 ,  G06F3/0659 ,  G06F3/067 ,  G06F11/1662 ,  G06F11/20 ,  G06F11/2035 ,  G06F11/2046 ,  G06F11/2069 ,  G06F11/2071 ,  G06F11/2097 ,  G06F2201/805 ,  G06F2201/82 ,  G06F2212/1032 ,  G06F2212/163 ,  G06F2212/263 ,  H04L29/08 ,  H04L67/1097 ,  H04L69/40

Abstract: Methods, systems, and computer program products for preventing non-detectable data loss during site switchover are disclosed. A computer-implemented method may include receiving a request to perform a switchover from a first node to a second node, determining whether to place a storage volume involved in the switchover in a suspended state, setting the storage volume in the suspended state based on determining that the storage volume is to be placed in the suspended state, and maintaining the storage volume in the suspended state after completing the switchover. In an example, the storage volume may be placed in a suspended state based on examining a volume-specific attribute indicating whether the storage volume is to be suspended when involved in a switchover. In one example, each storage volume involved in a switchover may be placed in a suspended state when indicated as part of a switchover request.

Abstract translation: 公开了用于在站点切换期间防止不可检测的数据丢失的方法，系统和计算机程序产品。 计算机实现的方法可以包括接收执行从第一节点切换到第二节点的请求，确定是否将切换中涉及的存储卷放置在暂停状态，基于确定将所述存储卷设置为暂停状态 存储卷将处于挂起状态，并在完成切换后将存储卷保持在挂起状态。 在一个示例中，存储卷可以基于检查特定于卷的属性而被置于暂停状态，该特定属性指示当参与切换时是否暂停存储卷。 在一个示例中，当切换请求的一部分被指示时，切换中涉及的每个存储卷可以被置于暂停状态。

公开(公告)号：US09170883B2

公开(公告)日：2015-10-27

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: G06F17/30 ,  G06F11/10 ,  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。