[one-users] SAN

[Ruben S. Montero]

Hi,

Well, in fact an iSCSI SAN can be used in several ways:

1.- Export the iSCSI volume with a NAS.  This is supported through the
tm shared drivers[1]. There are also drivers for the MooseFS [2]. If
you are using this approach you can improve the efficiency by using a
FS that support snapshotting (ZFS, BRTFS - some efforts undergoing in
this area) or image formats that can do that (e.g. qcow2 see [3]).
This requires some scripting to adapt it to you workflow.

2.- Create LVM volumes on the iSCSI for the images using golden LVM
devices. This may require some LVM cluster support. You may take the
LVM driver as a basic example which can be tailored to fit your
specific scenario [4]

3.- Create the devices and export them through iSCSI. This requires
some modification of the TM drivers to restart initiators. Some
information of options 2 and 3 can be found in [5]

[1] http://www.opennebula.org/documentation:rel3.0:sfs
[2] http://opennebula.org/software:ecosystem:moosefs
[3] https://support.opennebula.pro/entries/348847-using-qcow-images
[4] http://www.opennebula.org/documentation:rel3.0:lvm
[5] http://dev.opennebula.org/issues/32

Hope this helps

Cheers

Ruben


On Tue, Nov 22, 2011 at 1:34 AM, Anthony Goddard <agoddard at mbl.edu> wrote:
> Wondering if anyone who's using an iSCSI SAN for storage with OpenNebula
> would mind posting a short / high level overview of how their setup is
> configured? We have a few Dell MD3220i iSCSI SANs which we'd like to use for
> VM storage with OpenNebula and just trying to figure out the best way to do
> it.
> Cheers,
> Anthony
>
>
> ---
> Anthony Goddard
> Woods Hole Marine Biological Laboratory
>
>
>
>
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>



-- 
Dr. Ruben Santiago Montero
Associate Professor (Profesor Titular), Complutense University of Madrid

URL: http://dsa-research.org/doku.php?id=people:ruben
Weblog: http://blog.dsa-research.org/?author=7