Generate a tracking file

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When data evacuation starts, a tracking file is created.

This tracking file contains the namespaces to be copied.

  1. All namespaces currently stored on the Source Slicestor device are cataloged in a Local Storage Map file (storage.json).
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  2. To aid in better distribution of data across disks, all of these namespaces are then split into 512 smaller namespaces.
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  3. These smaller namespaces are shuffled and stored in the tracking file.
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Note: The smaller namespaces are shuffled to randomize the order in which data is copied to achieve maximum uniformity across all disks.