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スループットが非常に低く、ボリューム移動が停止しているように見える

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ontap-9
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環境

  • ONTAP 9
  • ボリューム移動

問題

  • しばらくすると、データ変更率の高い大容量ボリュームのボリューム移動で、スループットが2 MB未満に低下したように見える(volume move show を参照)。
  • Move State は「healthy
  • Bytes Sent の価値は継続的に向上
  • ソースで追加データが変更または書き込まれると、Percentage Completed後退することがある
  • Cutovers Attempted またはTimes Cutover Hard/Soft Deferred
  • 例: volume move show  コマンドの出力では、KB/秒のスループットと高い推定終了時間が表示されます(一部の行は省略しています)。
  • Cluster::> volume move show -volume vol1 -vserver svm1 Vserver Name: svm1 Volume Name: vol1 Actual Completion Time: - Bytes Remaining: 4.50TB Bytes Sent: 29.19TB Cutovers Attempted: 0 Times Cutover Hard Deferred: 0 Times Cutover Soft Deferred: 0 Destination Aggregate: node1-aggr1 Detailed Status: Transferring data: 29.19TB sent. Estimated Time of Completion: Fri Apr 04 12:38:31 2025 Job ID: 4583 Managing Node: node1 Percentage Complete: 85% Move Phase: replicating Estimated Remaining Duration: 33 days 22:56 Replication Throughput: 404.4KB/s Duration of Move: 18:54:17 Source Aggregate: node2-aggr1 Start Time of Move: Fri Feb 28 17:47:55 2025 Move State: healthy

 

 


 

 

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