For this plugin, if a tri-state can_cache is implemented, the code
from sh_can_fua could be reused:
https://github.com/libguestfs/nbdkit/blob/7a4f38f98920a1192e5c50ea9bd212e...
Rich.
--
Richard Jones, Virtualization Group, Red Hat
http://people.redhat.com/~rjones
Read my programming and virtualization blog:
http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/