Re: ZFS on linux

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Stephen John Smoogen <smooge@xxxxxxxxx> writes:

> Lawrence Livermore National Laboratory is a US Government/Department
> of Energy laboratory that UC Berkeley has a hand in managing. It was
> not founded by the University of California but came out of the post
> Manhatten project to build the hydrogen bomb. The US DOE did not
> commission the lab to make the port. The port was done as part of a
> project to have a large scale filesystem work for certain computer
> clusters. That work got special permission from Sun but those
> permissions look to be sealed.

To be clear for people not familiar with this, there are two levels of
(then) Sun filesystems involved.  They use many ZFS filesystem (pool)
instances to back the Lustre parallel filesystem.  ZFS replaces the
original Lustre ext-ish stuff.  See the history in
<http://zfsonlinux.org/docs/LUG11_ZFS_on_Linux_for_Lustre.pdf>.  [I'm
not sure the rms quote there is in context.]

> Just because a port was done and then released does not mean that
> Lawrence Livermore is using it in any large way etc. There are
> thousands of projects that come out of these labs which maybe 3-20
> students, grad students and phd's worked on but aren't in any use.
> Most of them will get that file attached to them which doesn't mean
> that LLNL sactioned it, DOE commission it etc etc. It just means that
> it was done at the lab as part of some project and the law requires
> that the file is attached to it.

Yes, but this specifically concerns the Sequoia 50 PB, 800 GB/s parallel
filesystem, e.g.
<http://zfsonlinux.org/docs/Morrone_Sequoia_LUG2013.pdf> and the above.
I assume it's served off EL6-ish systems, by the way.
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