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SnapMirror updates delayed after destination ONTAP upgrade

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snapmirror
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Applies to

ONTAP 9.x

Issue

  • Once the destination is upgraded, the transfer time for the same relationship has increased from 2 seconds to ~91 seconds. 
  • Before upgrade, the time taken by snapmirror update was less than 1 minute:

Fri Jul 23 23:00:02 HKT 2021 ScheduledUpdate[Jul 23 23:00:00]:c9e798a1-27ea-11eb-b27a-00a098e629b1 Operation-Uuid=59cf0e7c-2b1f-4609-882b-23a6b3ba736b Group=none Operation-Cookie=0 action=End source=svm:volname destination=svm:volname status=Success bytes_transferred=3040 network_compression_ratio=1.0:1 transfer_desc=Logical Transfer with Storage Efficiency - Optimized Directory Mode

  • After upgrade the update time increase to more than 1 minute:

Tue Jul 27 12:59:31 HKT 2021 DelayedUpdate[Jul 27 12:58:00]:c9e798a1-27ea-11eb-b27a-00a098e629b1 Operation-Uuid=1675da6f-da96-4880-af3f-5443ad8a580b Group=none Operation-Cookie=0 action=End source=svm:volname destination=svm:volname status=Success bytes_transferred=3080 network_compression_ratio=1.0:1 transfer_desc=Logical Transfer with Storage Efficiency - Optimized Directory Mode Note=Delayed update operation is queued.
 

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