<div dir="ltr">Hi Stephane,<div><br></div><div>If you have any existing instances, you will need to completely power them off and back on again for the change to take affect.</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">
On Wed, Jul 24, 2013 at 12:30 PM, Stephane Boisvert <span dir="ltr"><<a href="mailto:stephane.boisvert@gameloft.com" target="_blank">stephane.boisvert@gameloft.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>Thanks for the quick answer.. I already
did it but it seems not to be taken in account... I'll test it
again and open a new thread if I fail.<br>
<br>
Thanks Jacob<div><div class="h5"><br>
<br>
<br>
On 13-07-24 11:20 AM, Jacob Godin wrote:<br>
</div></div></div><div><div class="h5">
<blockquote type="cite">
<div dir="ltr">Hi Stephane,
<div><br>
</div>
<div>This is actually done in Nova with the config
directive disk_cachemodes="file=writeback"</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Wed, Jul 24, 2013 at 11:47 AM,
Stephane Boisvert <span dir="ltr"><<a href="mailto:stephane.boisvert@gameloft.com" target="_blank">stephane.boisvert@gameloft.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>sorry to interfere in that thread but I did set
cache=true in my ceph config... but where I can set
cache=writeback ? <br>
<br>
<br>
thanks for your help <br>
<div>
<div> <br>
On 13-07-24 10:40 AM, Jacob Godin wrote:<br>
</div>
</div>
</div>
<div>
<div>
<blockquote type="cite">
<div dir="ltr">A few things I found were key for I/O
performance:
<div>
<ol>
<li>Make sure your network can sustain the
traffic. We are using a 10G backbone with 2
bonded interfaces per node.</li>
<li>Use high speed drives. SATA will not cut
it.</li>
<li>Look into tuning settings. Razique, thanks
for sending these along to me a little while
back. A couple that I found were useful:</li>
<ul>
<li>KVM cache=writeback (a little risky, but
WAY faster)</li>
<li>Gluster write-behind-window-size (set to
4MB in our setup)</li>
<li>Gluster cache-size (ideal values in our
setup were 96MB-128MB)</li>
</ul>
</ol>
<div>Hope that helps!</div>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Wed, Jul 24, 2013 at
11:32 AM, Razique Mahroua <span dir="ltr"><<a href="mailto:razique.mahroua@gmail.com" target="_blank">razique.mahroua@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">I had much
performance issues myself with Windows
instances, and I/O demanding instances. Make
sure it fits your env. first before
deploying it in production
<div> <br>
</div>
<div>Regards,</div>
<div>Razique</div>
<div><br>
<div> <span><span style="font-weight:normal;font-family:Helvetica"><b style="color:rgb(19,112,138)">Razique
Mahroua</b></span><span style="font-weight:normal;font-family:Helvetica;color:rgb(19,112,138)"><b> - </b></span><span style="font-family:Helvetica"><span style="font-weight:normal;font-family:Helvetica"><b style="color:rgb(19,112,138)">Nuage
& Co</b></span><span style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;border-spacing:0px;font-size:medium"><span style="border-spacing:0px;text-indent:0px;letter-spacing:normal;font-variant:normal;text-align:-webkit-auto;font-style:normal;font-weight:normal;line-height:normal;border-collapse:separate;text-transform:none;font-size:medium;white-space:normal;font-family:Helvetica;word-spacing:0px"><span style="border-collapse:separate;font-variant:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;border-spacing:0px">
<div style="font-style:normal;font-size:medium;font-family:Helvetica;font-weight:normal"><font color="#13708a"><a href="mailto:razique.mahroua@gmail.com" target="_blank">razique.mahroua@gmail.com</a></font></div>
<div style="font-style:normal;font-size:medium;font-family:Helvetica"><font color="#13708a">Tel : +33
9 72 37 94 15</font></div>
</span></span></span></span></span><br style="text-indent:0px;letter-spacing:normal;font-variant:normal;text-align:-webkit-auto;font-style:normal;font-weight:normal;line-height:normal;text-transform:none;font-size:medium;white-space:normal;font-family:Arial;word-spacing:0px">
<span><img src="cid:part4.01060802.01070206@gameloft.com" height="125" width="125"></span> </div>
<br>
<div>
<div>Le 24 juil. 2013 à 16:25, Jacob
Godin <<a href="mailto:jacobgodin@gmail.com" target="_blank">jacobgodin@gmail.com</a>>
a écrit :</div>
<div>
<div><br>
<blockquote type="cite">
<div dir="ltr">Hi Denis,
<div> <br>
</div>
<div>I would take a look into
GlusterFS with a distributed,
replicated volume. We have
been using it for several
months now, and it has been
stable. Nova will need to have
the volume mounted to its
instances directory (default
/var/lib/nova/instances), and
Cinder has direct support for
Gluster as of Grizzly I
believe.</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Wed,
Jul 24, 2013 at 11:11 AM,
Denis Loshakov <span dir="ltr"><<a href="mailto:dloshakov@gmail.com" target="_blank">dloshakov@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi
all,<br>
<br>
I have issue with creating
shared storage for
Openstack. Main idea is to
create 100% redundant shared
storage from two servers
(kind of network RAID from
two servers).<br>
I have two identical servers
with many disks inside. What
solution can any one provide
for such schema? I need
shared storage for running
VMs (so live migration can
work) and also for
cinder-volumes.<br>
<br>
One solution is to install
Linux on both servers and
use DRBD + OCFS2, any
comments on this?<br>
Also I heard about Quadstor
software and it can create
network RAID and present it
via iSCSI.<br>
<br>
Thanks.<br>
<br>
P.S. Glance uses swift and
is setuped on another
servers<br>
<br>
_______________________________________________<br>
OpenStack-operators mailing
list<br>
<a href="mailto:OpenStack-operators@lists.openstack.org" target="_blank">OpenStack-operators@lists.openstack.org</a><br>
<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</a><br>
</blockquote>
</div>
<br>
</div>
_______________________________________________<br>
OpenStack-operators mailing list<br>
<a href="mailto:OpenStack-operators@lists.openstack.org" target="_blank">OpenStack-operators@lists.openstack.org</a><br>
<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</a><br>
</blockquote>
</div>
</div>
</div>
<br>
</div>
</div>
</blockquote>
</div>
<br>
</div>
<br>
<fieldset></fieldset>
<br>
<pre>_______________________________________________
OpenStack-operators mailing list
<a href="mailto:OpenStack-operators@lists.openstack.org" target="_blank">OpenStack-operators@lists.openstack.org</a>
<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</a>
</pre>
</blockquote>
<br>
<br>
</div>
</div>
<span><font color="#888888">
<div>-- <br>
<table border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td rowspan="8"><img src="cid:part13.08030603.02080100@gameloft.com"></td>
</tr>
<tr>
<td><b>Stéphane Boisvert</b></td>
</tr>
<tr>
<td>GNS-Shop Technical Coordinator</td>
</tr>
<tr>
<td><font size="2px">5800 St-Denis suite 1001</font></td>
</tr>
<tr>
<td><font size="2px">Montreal (QC), H2S 3L5</font></td>
</tr>
<tr>
<td><b><font size="2px">MSN:</font></b><font size="2px"> <a href="mailto:stephane.boisvert@gameloft.com" target="_blank">stephane.boisvert@gameloft.com</a></font></td>
</tr>
<tr>
<td><b><font size="2px">E-mail:</font></b><font size="2px"> <a href="mailto:stephane.boisvert@gameloft.com" target="_blank">stephane.boisvert@gameloft.com</a></font></td>
</tr>
</tbody>
</table>
</div>
</font></span></div>
<br>
_______________________________________________<br>
OpenStack-operators mailing list<br>
<a href="mailto:OpenStack-operators@lists.openstack.org" target="_blank">OpenStack-operators@lists.openstack.org</a><br>
<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators</a><br>
<br>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
<br>
<div>-- <br>
<table border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td rowspan="8"><img src="cid:part18.06060404.01090609@gameloft.com"></td>
</tr>
<tr>
<td><b>Stéphane Boisvert</b></td>
</tr>
<tr>
<td>GNS-Shop Technical Coordinator</td>
</tr>
<tr>
<td><font size="2px">5800 St-Denis suite 1001</font></td>
</tr>
<tr>
<td><font size="2px">Montreal (QC), H2S 3L5</font></td>
</tr>
<tr>
<td><b><font size="2px">MSN:</font></b><font size="2px">
<a href="mailto:stephane.boisvert@gameloft.com" target="_blank">stephane.boisvert@gameloft.com</a></font></td>
</tr>
<tr>
<td><b><font size="2px">E-mail:</font></b><font size="2px">
<a href="mailto:stephane.boisvert@gameloft.com" target="_blank">stephane.boisvert@gameloft.com</a></font></td>
</tr>
</tbody>
</table>
</div>
</div></div></div>
</blockquote></div><br></div>