[OT] System Imaging

[Sam Flory]

J. Epperson wrote:

> If you binary-zero-fill the free space on the target before shutting it
> down, you'll approach the performance of a "used blocks only" solution.
> 

  In case people don't know what binary-zero-fill means.  Either you
write zeros across the entire disk before creating your gold master
image.  Or you create a file filled with zeros that consumes the
remainder of space on every partition.  (cat /dev/zero >zeroed_file)
Swap partitions can be unmounted zeroed then mkswaped.