On 05/14/2013 01:44 AM, Gabriel Gunderson wrote:
> There are real reasons why this might not *actually* work. Be aware of
> caches, buffers, journals, snapshots, flushes, and RAIDs, oh my!

And on copy-on-write filesystems such as BtrFS and ZFS, I imagine it's
not possible to overwrite an existing block; each shred pass would
simply allocate a new block.  Eventually old blocks would be reused of
course.


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