Commvault backups failing for a VM with large disks
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Good morning,
I am testing backing up XCP-NG Windows VM's into Commvault. I have successfully backed up 7 of my 8 VM's with no problems whatsoever. I am using the recommended Windows VSA proxy.
The VM which is failing backups is a test file server. It has a 100 GB OS VDI, and 2x 1.95TB VDIs. These VDIs are pooled together in Windows using Storage Spaces to create a Storage Pool of slightly under 4TB. I have enough overhead to create a snapshot of this VM on the SAN datastore it is using.
After detaching the 2x 1.95TB VDIs, the server backs up normally. Any recommendations? I also have a ticket open with Commvault to troubleshoot this. The error that Commvault throws is "Error initializing proxy mount path." I have done troubleshooting on the proxy including disabling Automount, Automount scrub, reinstalling the agent, and updating the agent.
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To me it sounds like a Commvault issue. If you want some investigation on Vates side, I would recommend to open a support ticket
