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Slow SnapMirror throughput and stuck in Transferring phase

  1. Last updated
    May 29, 2025
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436
Visibility:
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Category:
ontap-9
Specialty:
perf
Last Updated:
5/29/2025, 6:50:47 PM

Applies to

  • ONTAP 9
  • XDP SnapMirror

Issue

  • SnapMirror is stuck moving forward
cluster::> snapmirror show -destination-path SVM:volume -instance

                            Source Path:SVM:volume
                       Destination Path: SVM:volume
                      Relationship Type: XDP
                Relationship Group Type: none
                    SnapMirror Schedule: -
                 SnapMirror Policy Type: mirror-vault
                      SnapMirror Policy: MirrorAndVault
                            Tries Limit: -
                      Throttle (KB/sec): unlimited
                           Mirror State: Uninitialized
                    Relationship Status: Transferring
                File Restore File Count: -
                 File Restore File List: -
                      Transfer Snapshot: snapmirror.abcd.2025-04-27_075958
                      Snapshot Progress: 15.69TB
                         Total Progress: 15.69TB
    Percent Complete for Current Status: -
              Network Compression Ratio: 1:1
                    Snapshot Checkpoint: 15.68TB
                        Newest Snapshot: -
  • There may be a disk or CPU bottleneck on the source or destination of the relationship
  • Nothing is running on the destination that would interfere
  • SnapMirror throughput appears to be near zero

 

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