<div dir="ltr">Greg,<div><br></div><div>I believe what you're referring to is talked about on this blog entry: <a href="http://www.sebastien-han.fr/blog/2013/06/24/what-i-think-about-cephfs-in-openstack/">http://www.sebastien-han.fr/blog/2013/06/24/what-i-think-about-cephfs-in-openstack/</a></div>
<div><br></div><div>With a corresponding blueprint/code fix for havana? <a href="https://blueprints.launchpad.net/nova/+spec/bring-rbd-support-libvirt-images-type">https://blueprints.launchpad.net/nova/+spec/bring-rbd-support-libvirt-images-type</a></div>
<div><br></div><div>Looked all this up a month or so ago... as I would personally also like to use Ceph for both ephemeral, cinder and Object storage. </div><div><br></div><div>- Mitch</div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Wed, Sep 11, 2013 at 12:39 PM, Greg Chavez <span dir="ltr"><<a href="mailto:greg.chavez@gmail.com" target="_blank">greg.chavez@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div>John: I'm talking about primary root disk storage. Secondary storage would persist of course.</div><div><br></div>Mike: Right, I just want to establish that if I set the default Cinder plugin to RBD volumes, and I do nothing else, root volumes are ephemeral. That seems to be the case anyway.<div>
<br></div><div>Seems like some of these parameters become meaningless depending on your backing store. As another example, do you really need to specify a root disk parameter if you're booting from a volume? I would think not.</div>
<div><br></div><div>Thanks for your responses.</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Sep 11, 2013 at 1:29 PM, Mike Dawson <span dir="ltr"><<a href="mailto:mike.dawson@cloudapt.com" target="_blank">mike.dawson@cloudapt.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">When you create an instance backed by an RBD Cinder volume, you can specify which behavior you want. There is a check box in Horizon to toggle the behavior.<br>
<br>
Thanks,<br>
Mike Dawson<div><div class="h5"><div><div><br>
<br>
<br>
On 9/11/2013 1:15 PM, Greg Chavez wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
So if I use RBD as my storage backend for Cinder, what happens to the<br>
root disks of VMs that I terminate?<br>
<br>
Do they still exist as RBD volumes in Ceph or are they<br>
deleted/marked-as-free?<br>
<br>
If the answer is that they get deleted, or at the very least OpenStack<br>
no longer keeps track of them, then there isn't much difference between<br>
the root and ephemeral disks in the flavors I am using. other than their<br>
being distinct disk devices. Or so it seems to me.<br>
</blockquote>
</div></div></div></div></blockquote></div><div><div class="h5"><br><br clear="all"><div><br></div>-- <br>\*..+.-<br>--Greg Chavez<br>+//..;};
</div></div></div>
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