SnapDiff

 My Article is here: (written more than a decade back)

SnapDiff | PDF


Conceptually, SnapDiff needs these four key pieces of information:

  1. Base Snapshot ID – the starting snapshot.
  2. Diff (Target) Snapshot ID – the snapshot to compare against.
  3. Volume FSID – identifies the WAFL file system (volume).
  4. Root inode number – the root of the inode tree from which the traversal begins.


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