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Article Number: 000130712

PowerStore Alerts: Replication Session Alerts

Summary: PowerStore Replication Session alerts due to Destination system down, Name conflict on destination and Destination out of space issues.

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Article Content

Symptoms

When Dell PowerStore encounters a problem, an error alert is generated to help identify the issue. This article explains the different possible causes and the relevant solutions for these error alerts. If your problem is not resolved despite the solution provided, check the technical support contact options.
SLN317183_en_US__1icon Note: Cannot find the information you need? Let us know via the feedback form at the bottom of this article.

 

Cause

Cause is mentioned in Resolution section under respective alerts.

Resolution

Alert ID POLICY_SESSION_CREATE_FROM_VOLUME_GROUP_FAILED
POLICY_SESSION_CREATE_FROM_VOLUME_FAILED
Alert Text Automatic replication session creation from %(source_name) to %(remote_system_name) failed with error: %(error_message_key)
Error Code (0x00901001) (0x00900301)
Description   A protection policy with a replication rule was applied to a storage resource, but the subsequent creation of the replication session failed. There could be one or more causes for this alert, depending on the error message displayed.
Resolution 1
Destination system down:
Cause
 The destination system may not be reachable for replication to proceed.

Solution
Ensure the destination system is accessible from the source system's network. A "Verify and Update" request may be issued from the source for the remote system to check connectivity.
Resolution 2
Name conflict on destination: 
Cause
The destination system already contains a user-created volume or volume group with the same name as the source. During replication configuration, a volume is attempted to be created on the destination system with the same name as the source resource. If that volume can't be created on the destination system because it already exists then replication will be unable to proceed.

Solution
Rename the destination resource to avoid the name collision. Replication will proceed within the next Recovery Point Objective (RPO) period.
Resolution 3
Destination out of space:
Cause
The destination system may have run out of available storage space to receive replicated data.

Solution
Free storage space on the destination system.
 
Alert ID POLICY_SESSION_CREATE_FROM_REPLICATION_GROUP_FAILED
Alert Text Unable to create a replication session from %(source_name) to %(remote_system_name) due to error: %(error_message_key)
Error Code 0x00901601
Impact Replication group is not protected.
Resolution  Cause:
Most common reasons:
1.  The remote system is unavailable.
Error message: Remote system service for system with management address xx.xx.xx.xx is not available.
2.  Misconfigured storage container destination.
Error message: Can't create replication destination for replication group <name> (<id>). Storage container <name> (<id>) has no destination defined on remote system <name> (<id>).
3. System failure to delete empty replication groups after all the Virtual Volumes were removed from these replication groups
 
Solution:
Resolve the issue reported in the error message and wait for the next RPO cycle. The next RPO cycle will automatically clear this alert if the issue has been resolved.
For cause #3, see Additional Info section below. 
 
  
Alert ID POLICY_SESSION_CREATE_FROM_NAS_SERVER_FAILED
Alert Text Unable to create a replication session from %(source_name) to %(remote_system_name) due to the error: %(error_message_key)
Error Code 0x00900E01
Impact The NAS Server is not yet protected by replication.
Resolution  Cause:
Most common reasons:
  • Peer SDNAS system is down.
  • Destination system already has production NAS server with the same name.
  • Platform error on destination due to which destination resource creation fails/timeout.
  • Software issue that results in changes to a replication rule may not be properly applied to the protection policy, resulting in the PowerStore not being able to create the replication session.

Solution:
Resolve the issue reported in the error message and wait for the next RPO cycle.

If the alert is raised when changing the destination of an asynchronous replication to be a different, third, PowerStore Cluster:
  1. Un-assign the protection policy from the NAS Server.
  2. Create a new protection policy and choose the replication rule that you had used previously. Note: you may create a new replication rule with the desired settings instead of re-using the existing replication rule, if that is preferred.
  3. Assign the newly created protection policy to the NAS Server and the replication session should be created.  The alert should also be cleared once the replication session is created.
  4. Optionally, you may delete the un-used protection policy if it is no longer needed. 
If the issue has been resolved, the next RPO cycle will automatically create the session and clear the alert.
  
 
Alert ID POLICY_METRO_REPLICATE_FOR_VOLUME_FAILED
Alert Text Unable to configure the protection policy on the remote system due to error: %(error_message_key).
Error Code 0x00901501
Impact Local protection is not configured for the metro resource on the remote system.
Resolution  Cause:
1.  The remote system is unavailable (ie. either power failure, network failure, or possibly the system is faulted such that management is not available)
Error message: Remote system service for system with management address xx.xx.xx.xx is not available.
2.  The system limit has reached for policies, snapshot_rules, or replication_rules.
     The error message will have the same format but will mention “snapshot rules” and “replication rules” instead.
Error message: A maximum of 64 protection policies are supported per system.
 

Solution:
Resolve the issue reported in the error message. Once the issue has been resolved, the protection policy on the remote system will be created and the alert cleared.

Additional Information

For alert 0x00901601 with cause software issue resulting in the failure to delete empty replication groups after all the vVOLS were removed from these replication groups:
 

The issue can be solved by deletion of the replication group on which the alert is raised.

1. Find the id of the replication group causing an alert

curl "https://$cluster_ip/api/rest/replication_group?name=eq.$rg_name"

Where cluster_ip is IP of the PowerStore cluster and rg_name is the value of the 'Resource Name' column from the alerts table

 

2. Issue a REST DELETE on the replication group

curl -X DELETE "https://$cluster_ip/api/rest/replication_group/$rg_id"

Where rg_id is the id of the replication group found on the previous step

 

 

Article Properties

Affected Product

PowerStore

Last Published Date

22 Jun 2023

Version

6

Article Type

Solution

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