Sparsify an image in-place

virt-sparsify

  • Make virtual machine drive images thin-provisioned.
    NOTE: Use only for offline machines to avoid data corruption.
    More information: <https://libguestfs.org>.
  • Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

virt-sparsify --in-place {{path/to/image.img}}

click the source code to copy install virt-sparsify on any operating system with command-not-found.com