<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I just noticed there is a bug in ram_allocation_ratio, it actually only multiplies the check for free ram which doen't do a lot. Bug filed here:<div><br></div><div><a href="https://bugs.launchpad.net/nova/+bug/1016273">https://bugs.launchpad.net/nova/+bug/1016273</a></div><div><br></div><div>In the meantime, to overcommit you will have to disable the ram check completely by setting the following set of enabled filters in conf.</div><div><br></div><div>scheduler_default_filters=AvailabilityZoneFilter,ComputeFilter<br><div><div><div><br></div><div>Vish</div><div><br></div><div>On Jun 21, 2012, at 3:03 PM, Sam Su wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi Vish,</div><div><br></div><div>Thank you for your response.</div><div><br></div><div>I added a 'line ram_allocation_ratio=10' in nova.conf, then restarted nova-scheduler in control node. after that was done, I tried to create a VM, but it still failed, and the debug info is showing as below:</div>
<div><a href="http://pastebin.com/RDHb9fDU">http://pastebin.com/RDHb9fDU</a>
</div><div><br></div><div>Can you help me to take a look at the error info at your convenience?</div><div><br></div><div>Thanks,</div><div>Sam</div><br><div class="gmail_quote">On Thu, Jun 21, 2012 at 12:23 PM, Vishvananda Ishaya <span dir="ltr"><<a href="mailto:vishvananda@gmail.com" target="_blank">vishvananda@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 style="word-wrap:break-word">Try setting:<div><br></div><div>ram_allocation_ratio=10</div><div><br></div><div>in your nova.conf (it defaults to 1.5)</div>
<div><br></div><div>Vish</div><div><br><div><div><div class="h5"><div>On Jun 21, 2012, at 11:34 AM, Sam Su wrote:</div><br></div></div><blockquote type="cite"><div><div class="h5">Hi,<div><br></div><div>I have a mini openstack environment with one compute node and one nova control node. There is 4G memory in the compute node, and I have allocated 2 VMs with 2G memory for each VM. When I try to create another VM , I get the error as below:</div>
<div><a href="http://pastebin.com/QZMQvXtB" target="_blank">http://pastebin.com/QZMQvXtB</a>
</div><div><br></div><div>I am wondering whether Openstack has support memory overcommit? How to do this? </div><div><br></div><div>It will be much appreciated If someone can give me some hints about this in convenience.</div>
<div><br></div><div>Thanks,</div><div>Sam</div></div></div>
_______________________________________________<br>Mailing list: <a href="https://launchpad.net/~openstack" target="_blank">https://launchpad.net/~openstack</a><br>Post to : <a href="mailto:openstack@lists.launchpad.net" target="_blank">openstack@lists.launchpad.net</a><br>
Unsubscribe : <a href="https://launchpad.net/~openstack" target="_blank">https://launchpad.net/~openstack</a><br>More help : <a href="https://help.launchpad.net/ListHelp" target="_blank">https://help.launchpad.net/ListHelp</a><br>
</blockquote></div><br></div></div></blockquote></div><br>
</blockquote></div><br></div></div></body></html>