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<p>I had looked at it, but then, why?</p>
<p>There is no benefit using object storage when you are putting
lustre over top. It would bog down. Supposedly you would want to
use CephFS over the ceph storage. It talks directly to rados. <br>
If you are able to enunciate the rados block devices, you should
also be able to send them directly as block devices (iSCSI at
least) so lustre is able to manage where the data is stored and
use it's optimizing. Otherwise the data can't be optimized. Lustre
would THINK it knows where it was, but the rados crush map would
have put it somewhere else.</p>
<p>Just my 2cents.</p>
<p>Brian<br>
</p>
<div class="moz-cite-prefix">On 2/21/2017 3:08 PM, Brock Palen
wrote:<br>
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<div>Has anyone ever ran Lustre OST's (and maybe MDT's)
on Ceph Radios Block Devices?<br>
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In theory this would work just like an SAN attached
solution. Has anyone ever done it before? I know we are
seeing decent performance from RBD on our system but I
don't have a way to test lustre on it.<br>
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I'm looking at a future system where Ceph and Lustre might
be needed (Object and High performance HPC) but also not a
huge budget to have two full disk stacks. So an idea was to
have lustre servers consume Ceph Block devices, and that
same cluster serves object requests.<br>
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Thoughts or prior art? This probably isn't that different
than the Cloud Formation script that uses EBS volumes if it
works as intended.<br>
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Thanks<br clear="all">
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<div><br>
Brock Palen<br>
<a moz-do-not-send="true"
href="http://www.umich.edu/%7Ebrockp"
target="_blank">www.umich.edu/~brockp</a><br>
Director Advanced Research Computing - TS<br>
XSEDE Campus Champion<br>
<a moz-do-not-send="true"
href="mailto:brockp@umich.edu"
target="_blank">brockp@umich.edu</a><br>
(734)936-1985</div>
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