<div dir="ltr">If you're trying to do what I think you are, which is to create a bootable cinder volume (in rbd) using a glance image (in rbd), you can enable the following in glance-api.conf:<div><br></div><div>show_image_direct_url = True</div>
<div><br></div><div>Enabling this will allow cinder to 'see' that the glance image is also in rbd, and it will essentially make a fast copy-on-write clone of the glance image into your cinder volume (effectively it's just an rbd clone from one pool, images, into another, volumes).</div>
<div><br></div><div>- Darren</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On 27 March 2014 10:46, Thomas Bernard <span dir="ltr"><<a href="mailto:tbe@atolcd.com" target="_blank">tbe@atolcd.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Yes i have a 10G network between all my node (controller, compute & storage).<br>
I precise that i create new instance with "boot from image (create new volume)".<span class="HOEnZb"><font color="#888888"><br>
<br>
-- <br>
Le 27/03/2014 11:11, Ken Peng a écrit :</font></span><div class="HOEnZb"><div class="h5"><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
于 2014-3-27 17:21, Thomas Bernard 写道:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I use a Havana infrastructure with CEPH storage (cinder & rbd) and when<br>
i create new big volume this is very slow.<br>
Openstack provision all the space on CEPH cluster this is very very<br>
(very) slow.<br>
</blockquote>
<br>
Do you have the enough bandwidth from compute nodes to the storage node?<br>
For example, a 10G+bps connection link.<br>
<br>
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