Impossible compression ratio on ZFS

Steven Hartland killing at
Mon Jun 13 11:11:09 UTC 2011

I wasn't but 7.5K vs 620MB not gonna happen ;-)
  ----- Original Message ----- 
  From: Simun Mikecin 
  To: Steven Hartland ; freebsd-fs at 
  Sent: Monday, June 13, 2011 11:56 AM
  Subject: Re: Impossible compression ratio on ZFS

  2011/6/13 Steven Hartland <killing at>

      Using 'du' for file sizes (without -A option) is wrong in the first place.
      Any program or script that is using it in such a way is broken and should be

    That's not true, -A displays the apparent size not the actual disk usage
    which is what we want.

  Disk usage is not equal to file size. 'ls -al' shows file size, 'du' shows disk usage.
  Use the one you need, but don't expect them to be the same thing.

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