公开(公告)号：US20150317226A1

公开(公告)日：2015-11-05

申请号：US14266733

申请日：2014-04-30

Applicant: NetApp, Inc.

Inventor： PARAG SARFARE ,  JOANNE MIKKELSON ,  JOSEPH BROWN

IPC: G06F11/20

CPC classification number: G06F11/2094 ,  G06F11/0727 ,  G06F11/2017 ,  G06F11/2023 ,  G06F11/203 ,  G06F11/2038 ,  G06F11/2048 ,  G06F11/2069 ,  G06F2201/82

Abstract: Techniques for detecting data loss during site switchover are disclosed. An example method includes storing at NVRAM of a first node a plurality of operations of a second node, the first and second nodes being disaster recovery partners. The method also includes during a switchover from the second node to the first node, receiving an indication of a first number of operations yet to be completed. The method further includes comparing the first number to a second number of operations in the plurality of operations stored at the NVRAM of the first node. The method also includes in response to the comparing, determining whether at least one operation is missing from the plurality of operations stored in the NVRAM of the first node. The method further includes in response to determining that at least one operation is missing, failing at least one volume.

Abstract translation: 公开了在现场切换期间检测数据丢失的技术。 一个示例性方法包括在NVRAM的第一节点处存储第二节点的多个操作，第一和第二节点是灾难恢复伙伴。 该方法还包括在从第二节点切换到第一节点期间，接收尚待完成的第一数量的操作的指示。 该方法还包括将第一数量与存储在第一节点的NVRAM中的多个操作中的第二数量的操作进行比较。 该方法还包括响应于比较，确定从存储在第一节点的NVRAM中的多个操作中是否丢失了至少一个操作。 该方法还包括响应于确定至少一个操作丢失，至少一个卷失败。