What does a 'clean' command do in the context of migrations?

In the context of migrations, the 'clean' command is specifically designed to deal with the management of resources once the data migration has been completed. When invoked, the command destroys the source extent, which effectively means that the system removes the original location of the migrated data and releases the underlying storage volume associated with it. This process helps in freeing up storage resources and ensures that there are no lingering remnants of the old data that could lead to confusion or management overhead.

Understanding this functionality is crucial because it highlights the importance of resource management in storage environments, particularly when transitioning data from one location to another. Properly executing a 'clean' command is a vital step in the migration process to maintain system efficiency and organization.