Hey,
You need to run chkdsk via Powershell targeting CSV mount point. As an example:
chkdsk.exe C:\ClusterStorage\Volume1 /scan
This command will scan the issues on CSV. Check the following articles for more information:
https://www.starwindsoftware.com/blog/how-to-perform-check-disk-on-cluster-shared-volume-on-starwind-vsan
https://techcommunity.microsoft.com/t5/failover-clustering/how-to-run-chkdsk-and-defrag-on-cluster-shared-volumes-in/ba-p/371905
Cheers,
Alex Bykovskyi
StarWind Software
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