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SM-BC relationship falls out of sync intermittenty

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ontap-9
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dp
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Applies to

  • ONTAP 9
  • SnapMirror Business Continuity (SM-BC)

Issue

  • Below events are triggered on the destination cluster sporadically:
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
  • Below events could also be seen at the source cluster:
  1. [src_cluster_node: repl_Handle_sync_resl: callhome.syncsm.exception:error]: Call home for SNAPMIRROR SYNCHRONOUS EXCEPTION: Network Latency exceeded threshold limit.
  2. [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).
  3. sm.syncmirror.out.of.sync:alert followed soon by sms.status.in.sync:notice event.
 

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