PowerStore: After the successful NDU of PowerStore cluster, replication session's synchronization goes into System_Paused state.

Summary: After the successful Nondisruptive upgrade (NDU) of PowerStore cluster, replication session's synchronization (using RPO, REST, or PowerStore Manager) goes into System_Paused state.

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Symptoms

On the destination cluster, pre-NDU steps pause all the replication sessions. Pause of replication sessions for NDU deletes the respective shadow snapshots.

Cause

Since Paused_For_Ndu is done locally on destination cluster, source cluster is not aware of it. 

After the NDU finishes, replication session synchronization is attempted (using RPO, REST, or PowerStore Manager). It fails because shadow snapshot was detached and deleted on destination cluster.

Resolution

Next replication session synchronization (using RPO, REST, or PowerStore Manager) recovers the shadow snapshot on destination cluster and replication sessions must move to OK state.

The issue is resolved in PowerStore 2.x.

Affected Products

PowerStore
Article Properties
Article Number: 000185143
Article Type: Solution
Last Modified: 07 Sep 2021
Version:  4
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