MTV document has this statement:
When performing a warm migration of a Microsoft Windows virtual machine from VMware, you must start VSS on the Windows guest operating system in order for the snapshot and Quiesce guest file system to succeed.If you do not start VSS on the Windows guest operating system, the snapshot creation during the Warm migration fails with errors.
According to this thread, actually VSS needs to be exist instead of started:
https://redhat-internal.slack.com/archives/C014ZTV21L2/p1764077656856529
By revising the doc, customer will not need to start VSS manually, when there are hundreds of windows guest, it could be a terrible task.

mtv2.x

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