The majority of the code is this project comes from OpenSolaris which has been released under the CDDL open source license. This includes the core ZFS code, libavl, libnvpair, libefi, libunicode, and libutil. The original OpenSolaris source can be downloaded from: http://dlc.sun.com/osol/on/downloads/b121/on-src.tar.bz2 Files which do not originate from OpenSolaris are noted by a header and attributed properly. These exceptions include but are not limited to the vdev_disk.c and zvol.c implementation which are also licensed under the CDDL. This package is distributed under the terms of the CDDL. See the file OPENSOLARIS.LICENSE for more information.