use char *buf instead of void *buf which was causing warning

Signed-off-by: James Paton <jpaton2@gmail.com>
use 1GB instead of 1TB which was causing buffer overflow

Signed-off-by: James Paton <jpaton2@gmail.com>
can now do reads, but writes still hang for some reason

Signed-off-by: James Paton <jpaton2@gmail.com>
Merge branch 'master' of github.com:igorcanadi/FreEBS