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<p>Hi Massimo,</p>
<p>Though I don't have experience on the migration, but as the
glance RBD driver maintainer and image service maintainer of our
public cloud (Catalyst Cloud based in NZ), I'm happy to provide
some information. Before I talk more, would you mind sharing some
information of your environment?</p>
<p>1. Are you using CoW of Ceph?</p>
<p>2. Are you using multi locations? <br>
</p>
<pre wrap="">show_multiple_locations=True</pre>
<p>3. Are you expecting to migrate all the images in a maintenance
time window or you want to keep the glance service running for end
user during the migration?</p>
<p>4. Is it a public cloud?<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 25/03/17 04:55, Massimo Sgaravatto
wrote:<br>
</div>
<blockquote
cite="mid:CALaZjRFB=ZP7jt+N49v4HWjKCWawy1KQDrX7gn=4-BrOny-cRw@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>Hi</div>
<div><br>
</div>
<div>In our Mitaka cloud we are currently using Gluster as
storage backend for Glance and Cinder.</div>
<div>We are now starting the migration to ceph: the idea is then
to dismiss gluster when we have done.</div>
<div><br>
</div>
<div>I have a question concerning Glance. </div>
<div><br>
</div>
<div>I have understood (or at least I hope so) how to add ceph
as store backend for Glance so that new images will use ceph
while the previously created ones on the file backend will be
still usable.</div>
<div><br>
</div>
<div>My question is how I can migrate the images from the file
backend to ceph when I decide to dismiss the gluster based
storage.</div>
<div><br>
</div>
<div>The only documentation I found is this one:</div>
<div><br>
</div>
<a moz-do-not-send="true"
href="https://dmsimard.com/2015/07/18/migrating-glance-images-to-a-different-backend/">https://dmsimard.com/2015/07/18/migrating-glance-images-to-a-different-backend/</a><br>
<div><br>
</div>
<div><br>
</div>
<div>Could you please confirm that there aren't other better
(simpler) approaches for such image migration ?</div>
<div><br>
</div>
<div>Thanks, Massimo</div>
</div>
<br>
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<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Cheers & Best regards,
Feilong Wang (王飞龙)
--------------------------------------------------------------------------
Senior Cloud Software Engineer
Tel: +64-48032246
Email: <a class="moz-txt-link-abbreviated" href="mailto:flwang@catalyst.net.nz">flwang@catalyst.net.nz</a>
Catalyst IT Limited
Level 6, Catalyst House, 150 Willis Street, Wellington
-------------------------------------------------------------------------- </pre>
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