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Snapmirror takes a long time

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84
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Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

  • ONTAP
  • Snapmirror

Issue

  • A sudden increase in SnapMirror transfer time occurs.
  • One day it takes 5 minutes for normal SnapMirror updates but the next is five hours.
  • No contention on the network, loss, or throttling in ONTAP or replication throttling are seen.
  • The size of the update shows 0 bytes transferred in the SnapMirror logs (located in /etc/log/mlog/snapmirror.log via SPI):

Sun May 21 20:22:35 CEST 2023 FlexGroupUpdate[May 21 20:22:23]: Operation-Uuid=... Group=flexgroup Operation-Cookie=0 action=End source=src_svm:fg1 destination=dst_svm:fg1 status=Success bytes_transferred=0 network_compression_ratio=1.0:1

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