• Mike Hibler's avatar
    Add -Z option to zero free space included in the image due to -F. · 5a02dd31
    Mike Hibler authored
    Previously, this "internal free space" was whatever garbage happened to
    be on the disk we were imaging. By zeroing, we eliminate any leakage of
    information from the source disk and also allow the image to compress just
    a tad (1-4%) better.
    
    Why isn't this the default? Eh...no good reason, other than that this whole
    squish-out-small-free-ranges-to-allow-longer-writes optimization should be
    done by the client and should not be encoded in the image.
    5a02dd31
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