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如何对 SnapMirror" 无通用快照 " 错误进行故障排除

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适用场景

  • ONTAP 9

问题描述

  • 创建和更新SnapMirror关系(手动或通过计划)后、将在源卷上创建新的快照。
  • 此快照是卷中的最新快照、将用作传输的基本快照。
  • 然后、SnapMirror引擎将确定新的基本快照与上次为传输创建的上一个复制快照(称为"通用基本快照")之间的差异。
  • 然后、这些差异会传输到目标卷。
  • 这些数据可以包括数据块、用户文件、Snapshot副本、LUN以及卷中的其他数据。
  • 传输完成后、卷中的最新快照现在为"通用基本快照"、直到触发下一次更新为止。
  • SnapMirror要求源卷和目标卷上都存在通用基本快照、以便进行更新。否则、操作将失败并显示 No common snapshot 错误。 

cluster2::> snapmirror resync -source-path svm1:vol1 -destination-path svm2:vol2

Error: command failed: No common Snapshot copy found between svm1:vol1 and svm2:vol2.

cluster2::> snapmirror initialize -destination-path svm2:vol2

cluster2::> snapmirror show svm2:vol2

               Source Path: svm1:vol1
            Destination Path: svm2:vol2
                 Healthy: false
            Unhealthy Reason: Transfer failed.
           Last Transfer Type: initialize
           Last Transfer Error: Destination volume "svm2:vol2" must be an empty                                            data-protection volume.

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