SM-BC関係が断続的に同期から外れる
環境
- ONTAP 9
- SnapMirrorビジネス継続性（SM-BC）
問題
- 以下のイベントがデスティネーション クラスタで散発的にトリガーされます：
SMGROS:HA Group Notification from dest_cluster_node (SNAPMIRROR DESTINATION IS OUT OF SYNC MORE THAN 15 MINUTES: dest_iSCSI_SVM:/cg/dest_vol) ALERT- ソース クラスタで以下のイベントも確認できます：
[src_cluster_node: repl_Handle_sync_resl: callhome.syncsm.exception:error]: Call home for SNAPMIRROR SYNCHRONOUS EXCEPTION: Network Latency exceeded threshold limit.[src_cluster_node: sm_rpl_admin_main: sm.syncmirror.out.of.sync:alert]: Sync granular CG relationship with source path src_iSCSI_SVM:/cg/src_vol and destination path dest_iSCSI_SVM:/cg/dest_vol has transitioned from in-sync to out-of-sync for the follow reason: Replication engine was aborted as part of a consistency group coordinated operation.(Replication engine error).sm.syncmirror.out.of.sync:alertすぐに続いてsms.status.in.sync:noticeイベント。
- 以下のイベントは、SnapMirrorデスティネーションの監査ログで確認できます。
InSyncTransfer[Mar 19 12:15:01]:138f4255-b3b9-11ee-9d67-d039eab0afa9 Operation-Uuid=a2f9e8b2-e5af-11ee-ad6f-d039eab0aa86 Group=CGflexvol Operation-Cookie=0 action=Info Transfer failed.(Replication engine was aborted as part of a consistency group coordinated operation.(Replication engine error(Refer to the corresponding sms.status.out.of.sync EMS generated on the SnapMirror destination cluster for more details on the OutOfSync reason. If the SnapMirror destination does not generate an OutOfSync EMS this could be a transient failure during a resync operation.))).
InSyncTransfer[Mar 19 14:55:15]:138f7463-b3b9-11ee-9d67-d039eab0afa9 Operation-Uuid=a2f9e8b2-e5af-11ee-ad6f-d039eab0aa86 Group=CGflexvol Operation-Cookie=0 action=Info Relationship "1397115a-b3b9-11ee-9d67-d039eab0afa9" is out of sync(Replication engine was aborted as part of a consistency group coordinated operation.(Replication engine error))
- 以下のイベントがソースEMSログに表示されます。
Wed Mar 19 12:12:00 +0800 [src_cluster_node: mgwd: sm.mediator.unreachable:alert]: ONTAP Mediator (IP: 10.10.119.244) is unreachable from cluster <src_cluster>.