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手动故障转移

11/20/2024 贡献者

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术语"故障转移"并不是指使用SnapMirror活动同步进行复制的方向、因为它是一种双向复制技术。相反、"故障转移"是指发生故障时、哪个存储系统将成为首选站点。

例如、您可能希望在关闭站点进行维护之前或执行灾难恢复测试之前执行故障转移以更改首选站点。

更改首选站点只需简单的操作即可。在集群之间切换复制行为的权限时、IO将暂停一两秒钟、但IO不会受到影响。

GUI示例：

SM-AS首选站点的SystemManager剪辑

通过命令行界面将其更改回的示例：

Cluster2::> snapmirror failover start -destination-path jfs_as2:/cg/jfsAA
[Job 9575] Job is queued: SnapMirror failover for destination "jfs_as2:/cg/jfsAA                      ".

Cluster2::> snapmirror failover show

Source    Destination                                          Error
Path      Path        Type     Status    start-time end-time   Reason
-------- -----------  -------- --------- ---------- ---------- ----------
jfs_as1:/cg/jfsAA
         jfs_as2:/cg/jfsAA
                      planned  completed 9/11/2024  9/11/2024
                                         09:29:22   09:29:32

The new destination path can be verified as follows:


Cluster1::> snapmirror show -destination-path jfs_as1:/cg/jfsAA

                            Source Path: jfs_as2:/cg/jfsAA
                       Destination Path: jfs_as1:/cg/jfsAA
                      Relationship Type: XDP
                Relationship Group Type: consistencygroup
                 SnapMirror Policy Type: automated-failover-duplex
                      SnapMirror Policy: AutomatedFailOverDuplex
                            Tries Limit: -
                           Mirror State: Snapmirrored
                    Relationship Status: InSync

手动故障转移

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