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Hi,

I’m wondering how Commvault detects cluster disks in a Windows Failover Cluster. We’re running into an issue where Commvault doesn’t seem to see the cluster disks when executing a filesystem backup. When we manually select the cluster disks in the subclient content of the default subclient, it works fine. But using / in the subclient content causes issues.

Has anyone else had this issue before?

 

Hello @Jeremy 

Are you using the cluster client?

https://documentation.commvault.com/2022e/expert/4977_cluster_group_clients_for_microsoft_clusters.html

https://documentation.commvault.com/2022e/expert/4983_configuring_cluster_group_clients_for_windows_clusters.html


Hi Jeremi,

our agent consults the Windows MSCS Cluster configuration and looks for active disk resources on the nodes of the cluster. However, it does this ONLY as part of the Windows Cluster virtual pseudo client, and it will ignore and exclude any cluster resources when using the regular (physical) Client’s File System agent that is installed/configured for the physical node.

Are you sure you are using the Windows Cluster pseudo client for backing up MS Cluster resources?


Hi @Scott Reynolds@MarkusBaumhardt 

Thanks for your input! Yes, we are using the Windows Cluster pseudo client for backing up the cluster resources. It used to work too, but apparently the servers were patched after which the discovery of the cluster resources started failing.   


@Jeremy  I suspect the patches/changes something else was either modified or a change in the cluster itself. Might be best to open a case and have support review. Most likely would need to check Widows application logs for anything related to cluster resources either going offline or similar.


Hi @Scott Reynolds 

Thanks, I’ll engage support. I’ll update this post with the solution when the issue got fixed.


Hello @Jeremy 

Wanted to follow up here. Were you able to open a case? You can DM me the case number we can followup as well.

Thanks


Hi @Scott Reynolds 

Just DM’d you the case number.

 


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