SnapMirrorのスケジュールされた更新を開始できない場合のトラブルシューティング

環境

• ONTAP 9
• SnapMirror

問題

• snapmirror show -instance  コマンドを実行すると、 Relationship Status がTransferring であることが 長時間表示されます。
• 関係レポートは次のとおりです。
  • Healthy: false 
  • Unhealthy Reason: Scheduled update failed to start. (Scheduled update was delayed because another SnapMirror operation for the relationship is in progress.)
• 次のメッセージも報告されることがあります。 
  • Alert on mirror copies - smc.snapmir.schd.trans.overrun: Scheduled transfer from source volume 'volume_name' to destination volume 'volume_name' is taking longer than the schedule window. 

例：

cluster::> snapmirror show cluster2:volname -instance

               Source Path: cluster1:volname
            Destination Path: cluster2:volname
            Relationship Type: XDP
         Relationship Group Type: none
           SnapMirror Schedule: snapvault
         SnapMirror Policy Type: vault
            SnapMirror Policy: snapvault_vault
               Tries Limit: -
            Throttle (KB/sec): unlimited
              Mirror State: Snapmirrored
           Relationship Status: Transferring
         File Restore File Count: -
         File Restore File List: -
            Transfer Snapshot: daily.2019-12-20_0010
            Snapshot Progress: 6.78GB
             Total Progress: 6.78GB
        Network Compression Ratio: 1:1
           Snapshot Checkpoint: 6.66GB
             Newest Snapshot: daily.2019-12-19_0010
        Newest Snapshot Timestamp: 12/19 00:10:03
            Exported Snapshot: daily.2019-12-19_0010
       Exported Snapshot Timestamp: 12/19 00:10:03
                Healthy: false
             Unhealthy Reason: Scheduled update failed to start. (Scheduled update was delayed because another SnapMirror operation for the relationship is in progress.)