On Wed, Jul 11, 2018 at 11:30:19AM +0300, Arik Hadas wrote:
4. Mount each reserved place for a disk as a loopback device and
the volume-chain directly to it 
nbdkit tar plugin can overwrite a single file inside a tarball, all in
userspace and non-root.
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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