Review the ZFS dataset output that is displayed on your system: Which four correctly describe the output?

Question

Options

• A/data/file4 has been added.
• BThe link /data/file3 has been added.
• C/data/file3 has been renamed to /data/file13.
• D/data/file4 has been modified and is now larger.
• E/data/file1 has been deleted.
• F/data/file1 has been modified and is now smaller.
• G/data/file5 has been modified.
• H/data/file3 (a link) has been removed.

• A
  82% (42)
• B
  10% (5)
• D
  2% (1)
• F
  4% (2)
• H
  2% (1)

Explanation

In a zfs diff output, each line is prefixed with a symbol: + (added), - (removed), M (modified), and R (renamed with an arrow showing old → new path). Options A, C, E, and G are correct because the output shows /data/file4 with a + (newly added), /data/file3 renamed to /data/file13 via an R entry, /data/file1 with a - (deleted), and /data/file5 with an M (modified).

The distractors fail because B confuses a rename with a new symlink addition - /data/file3 was renamed, not created as a link; D incorrectly calls /data/file4 a modification when the + symbol explicitly means it was added fresh; F misreads the - on /data/file1 as a size-reduction modification rather than a deletion; and H incorrectly describes /data/file3 as a removed link when the R symbol indicates a rename, not removal.

Memory tip: Think of zfs diff symbols like file operation verbs - + = Plus means Produced (new), - = minus means missing (deleted), M = Mutated (changed), R = Renamed. When a file changes identity (name), it's always R, never - followed by +.

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