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SnapMirror initialization or update fails after transferring a portion of the data

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snapmirror
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dp
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Applies to

  • Data ONTAP systems correctly configured for SnapMirror transfers
  • There are one or more firewalls between the source and destination
  • Volume SnapMirror (VSM) and Qtree SnapMirror (QSM) can be similarly affected

Issue

  • Messages are logged in /etc/messages or on the console:

Source
Wed Jan  1 08:00:00 EST [SM-SOURCE: replication.src.err:error]: SnapMirror: source transfer from vol_data to SM_DEST:vol_mirror : transfer failed.    

Destination
Wed Jan  1 07:00:00 CST [SM-DEST:replication.dst.err:error]: SnapMirror: destination transfer from SM-SOURCE:vol_data to vol_mirror : replication transfer failed to complete.

  • The following messages are recorded in /etc/log/snapmirror:

Source
src Wed Jan  1 08:00:00 EST SM-SOURCE:vol_data SM-DEST:vol_mirror Abort (Transfer failed)

Destination
dst Wed Jan  1 07:00:00 CST SM-SOURCE:vol_data SM-DEST:vol_mirror Abort (replication transfer failed to complete)

  • At the same time, other transfers that use the same source and destination pair are successful.
  • Transfers using the same source and different destinations, or different sources and the same destination, are also successful.
  • The failed transfer might appear to have normal throughput at the start of the transfer but slow down or decrease throughput until it eventually fails.
  • The failed transfer might appear to transfer the same amount of data during each attempt.
  • Failing transfers can also report below error messages.

src Wed Jan  1 08:00:00 EST SM-SOURCE:vol_data SM-DEST:vol_mirror Abort (could not write to socket)
dst Wed Jan  1 07:00:00 CST SM-SOURCE:vol_data SM-DEST:vol_mirror Abort (cannot connect to source filer)

 

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