On Wed, 2012-10-24 at 14:07 +0200, Marco Nelles wrote:
> As some of you might know, we are working for SUSE on a patchset in order to
> get ldiskfs compiled with SLES 11 SP 2 kernel. If you're interested, see here:
> Comments, hints or even changes are always welcome of course.
> Furthermore I would like to ask a question about the future of ldiskfs. Lustre
> 2.4 will be able to use external OSD like ZFS. Is it right that an unpatched
> ZFS can be used as storage engine with Lustre 2.4?
Right, ZFS doesn't require kernel patches so you'll be able to use a
stock kernel with Lustre+ZFS. Currently I do my Lustre development with
a stock 2.6.32 RHEL6 kernel.
> By now ldiskfs is officially based on ext4 sources from RHEL6 kernel 2.6.32.
> What are the plans for ldiskfs with Lustre 2.4?
That's a good question. Speaking for Livermore we'd love to see ldiskfs
get cleanly split from the Lustre source and promoted to a stand alone
first class package. Adding support for multiple OSDs has helped move
things is this direction, but a lot of work is still required to make
this possible for ldiskfs.