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Cascading snapmirror fails to initialize

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Category:
snapmirror
Specialty:
dp
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Applies to

  • DP
  • Snapmirror

Issue

  • Deployed a new CVO system in Azure and trying to implement the following snapmirror cascade:
Site A ( production) to Site B ( Azure CVO1) to Site C ( new CVO in Azure).
 
  • The Site A to Site B replication of volumes is already in place and snapmirrored.
 
  • Created a new volumes on Site C, however when trying to create the cascade relationship from Site B to Site C in the cli,
the relationship gets created but mirror state shows as Broken-off instead of uninitialized in System Manager.
 
  • The only option available is to resync, which fails with the error:
 
"Transition to snapmirrored state failed. Reason: No common Snapshot copy found between
svm_b:vol_mir and svm_c:vol_mir".
 
  • The goal is to snapmirror the volume from SiteB to Site C, so end user can decomission site B and resume replication from Site A to Site C.

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