On 2012-12-18, at 17:29, John Bent <johnbent(a)gmail.com&gt; wrote: John, yes the osd-zfs source code is available in the Lustre git repository, in the master branch only. It was also in the 2.3 release as a preview for OSTs only, while the 2.4 release will be the first one that is functional for the MDT. The ZFS code itself is available at zfsonlinux.org in various forms. Cheers, Andreas