> optimize performance? The purpose is to share the database over NFS to the
> Galaxy VM.

Are you moving the PostgreSQL/MySQL database over to ZFS or the actual
storage of your datasets over to ZFS? I am assuming the latter.
Remember, ZFS is just a file system, you still need a protocol, like
NFS, to export the data to each of your machines. This is going to be
your bottleneck, luckily the NFS clients supports write caching as
described in our test here[1].

On our HPC cluster, we run xfs filesystem on top of Gluster and we
have another filesystem using xfs on top of FraunhoferFS. I did test
out ZFS on Linux roughly a year ago and in terms of Read/Write on a
single machine it was slower than native ext4 and XFS. This of course
was to be expected. However the added benefit of ZFS may be more
favorable in your case, Snapshots, disk management, ZIL/SSD caching,
etc. If you use a distributed filesystem like Gluster, FraunhoferFS,
or even Lustre (2.x branch supports ZFS!) you will most certainly get
some very good read/write speeds.

However, it sounds like you are using a single machine, so your
read/write is going to be slower than native ext4 and XFS --- trust
but verify, run your own read/write tests.

When I was using ZFS, this ZFSBuild[2] website was most helpful.

Let me know if you have any other questions,
-Adam

[1]: http://www.gluster.org/pipermail/gluster-users/2012-September/034295.html
[2]: http://www.zfsbuild.com/

--
Adam Brenner
Computer Science, Undergraduate Student
Donald Bren School of Information and Computer Sciences

Research Computing Support
Office of Information Technology
http://www.oit.uci.edu/rcs/

University of California, Irvine
www.ics.uci.edu/~aebrenne/
aebrenne@uci.edu

On Tue, Sep 10, 2013 at 3:29 AM, Joachim Jacob | VIB |
<joachim.jacob@vib.be> wrote:
> Hi all,
>
> I am performing some tests to move my galaxy database to ZFS. Does anybody
> have experience with ZFS on linux, and some recommendations/experiences to
> optimize performance? The purpose is to share the database over NFS to the
> Galaxy VM.
>
>
> Thanks,
> Joachim.
>
> --
> Joachim Jacob
> Contact details: http://www.bits.vib.be/index.php/about/80-team
>
>
> ___________________________________________________________
> Please keep all replies on the list by using "reply all"
> in your mail client.  To manage your subscriptions to this
> and other Galaxy lists, please use the interface at:
>  http://lists.bx.psu.edu/
>
> To search Galaxy mailing lists use the unified search at:
>  http://galaxyproject.org/search/mailinglists/
___________________________________________________________
Please keep all replies on the list by using "reply all"
in your mail client.  To manage your subscriptions to this
and other Galaxy lists, please use the interface at:
  http://lists.bx.psu.edu/

To search Galaxy mailing lists use the unified search at:
  http://galaxyproject.org/search/mailinglists/