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Mediator Assisted Unplanned Switchoverがトリガーされた理由

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環境

  • MetroCluster IP
  • ONTAP 9
  • Mediator Assisted Unplanned Switchover(MAUSO;メディエーターアシスト計画外スイッチオーバー)

回答

  • スイッチオーバー時に、一方のサイトの両方のノードがDRパートナーとDRAUXパートナーへの接続を失いました。
例:

08Jul2024 17:53:16 iscsi_session_stateChanged iscsi_session_state="Reconnecting" iscsi_target="iqn.2016-07.com.netapp:X" iscsi_target_type="dr_partner" iscsi_target_address="1.1.2.3:65200" iscsi_session_state_change_reason="Reason: session login timed out." iscsi_timeout_value="5"

08Jul2024 17:53:16 iscsi_session_stateChanged iscsi_session_state="Reconnecting" iscsi_target="iqn.2016-06.com.netapp:Y" iscsi_target_type="dr_auxiliary" iscsi_target_address="1.1.2.4:65200" iscsi_session_state_change_reason="Reason: session login timed out." iscsi_timeout_value="5"

  • 同じノードがメディエーターのメールボックスディスクに同時にアクセスできなくなります
例:

08Jul2024 17:53:21 iscsi_session_stateChanged iscsi_session_state="Reconnecting" iscsi_target="iqn.2012-05.local:mailbox.target.X:1" iscsi_target_type="mailbox" iscsi_target_address="1.2.3.4" iscsi_session_state_change_reason="Reason: socket error 54." iscsi_timeout_value="0"

  • MetroCluster IPサイトでこれらのリソースの両方が失われると、ノードは自己停止し、もう一方のサイトのノードでMAUSOがトリガーされます。

追加情報

AdditionalInformation_text

 

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