<div dir="ltr">Has anyone tried creating a block device from a Ceph pool and then exporting that device via NFS to the compute nodes for instance storage? I'm kicking that idea around here. </div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Wed, Apr 24, 2013 at 11:31 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 ended up using Gluster as a shared storage for instance and Ceph for Cinder/ Nova-volume and admin storage as well.<div>works perfectly!</div><div><div class="im"><br><div>
<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:'Lucida Grande';word-spacing:0px"><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">
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<br></div><div><div>Le 24 avr. 2013 à 19:08, Jacob Godin <<a href="mailto:jacobgodin@gmail.com" target="_blank">jacobgodin@gmail.com</a>> a écrit :</div><br><blockquote type="cite"><div class="im"><div dir="ltr">Razique, what did you end up deciding on? I would like to keep my Ceph RADOS setup, but need a different filesystem to put on top of it. Wondering if anyone else is doing that?<div>
<br></div><div><br></div></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote"><div class="im">On Wed, Apr 24, 2013 at 1:21 PM, Razique Mahroua <span dir="ltr"><<a href="mailto:razique.mahroua@gmail.com" target="_blank">razique.mahroua@gmail.com</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div class="im">I feel you Jacob, <div>Loring I had the exact same issue ! Using both Argonaut and Bobtail, on high I/O load the mount crashed the server - well the server wasn't crashing, the mount went crazy, and impossible to unmount the disk, kill the process, so I always ended up rebooting the nodes. What is interesting though is that the reason why it is not still considered as production-ready is because of the way metadata is currently implemented, rather than the code itself....</div>
<div><br></div></div><div><div><br><div><div class="im">
<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:'Lucida Grande';word-spacing:0px"><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">
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<br></div><div><div class="h5"><div><div>Le 24 avr. 2013 à 17:36, Lorin Hochstein <<a href="mailto:lorin@nimbisservices.com" target="_blank">lorin@nimbisservices.com</a>> a écrit :</div><br><blockquote type="cite">
<div dir="ltr"><div>
Razique:<div><br></div><div>Out of curiosity, what kinds of problems did you see with CephFS? I've heard it's not ready for production yet, but I haven't heard anybody talk about specific experiences with it.</div>
<div><br></div></div><div>Lorin<br><div class="gmail_extra"><br><br><div class="gmail_quote"><div>On Sat, Apr 20, 2013 at 8:14 AM, Razique Mahroua <span dir="ltr"><<a href="mailto:razique.mahroua@gmail.com" target="_blank">razique.mahroua@gmail.com</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>Hi Paras, <div>that's the kind of setup I've always seen myself. After unsuccessful tests with CephFS, I'll move to the following strategy:</div>
<div>- GlusterFS as a shared storage for the instances (check the official doc, we wrote about its deployment for OpenStack)</div><div>- Ceph cluster wit the direct RBD gateway from nova to RADOS</div><div>- Ceph cluster as well the imaging service (Glance)</div>
<div><br></div><div>Some others use MooseFS as well the the stared storage (we wrote a deployment guide as well)</div><div>Best regards,</div><div>Razique</div><div><br></div></div><div><div><br><div><div>
<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:'Lucida Grande';word-spacing:0px"><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">
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<br></div><div><div><div><div>Le 19 avr. 2013 à 17:05, Paras pradhan <<a href="mailto:pradhanparas@gmail.com" target="_blank">pradhanparas@gmail.com</a>> a écrit :</div><br><blockquote type="cite"><div><div dir="ltr">
Well I am not sure if we would like to do it since it is marked as deprecated. So this is what I am thinking. For shared storage, I will be using glusterfs and use cinder just for extra block disk on the instances. This what the Openstack operators doing typically ? <div>
<br></div><div>Thanks</div><div>Paras.</div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div>On Fri, Apr 19, 2013 at 12:10 AM, Razique Mahroua <span dir="ltr"><<a href="mailto:razique.mahroua@gmail.com" target="_blank">razique.mahroua@gmail.com</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>More infos here:<div><a href="http://osdir.com/ml/openstack-cloud-computing/2012-08/msg00293.html" target="_blank">http://osdir.com/ml/openstack-cloud-computing/2012-08/msg00293.html</a></div>
<div><br></div><div>But I'm not sure about the last updates - you can still use it at the moment </div><div>Razique</div></div><div><br><div><div>
<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:'Lucida Grande';word-spacing:0px"><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">
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<br><div><div>Le 18 avr. 2013 à 17:13, Paras pradhan <<a href="mailto:pradhanparas@gmail.com" target="_blank">pradhanparas@gmail.com</a>> a écrit :</div><div><br><blockquote type="cite"><div dir="ltr">
Regarding block migration, this is what confuses me. This is from the Openstack operations manual<div><br></div><div>--</div><div><div>Theoretically live migration can be done with non-shared storage, using</div>
<div>a feature known as KVM live block migration. However, this is a littleknown feature in OpenStack, with limited testing when compared to live migration, and is slated for deprecation in KVM upstream.</div></div><div>
--</div>
<div><br></div><div>Paras.</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Apr 18, 2013 at 3:00 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">Sure :)<div>Great feedbacks around. Many technologies do pretty much everything on the paper - but I guess in the end it's more about if the tech. does the job and if it does it well.</div>
<div>For such critical implementation, reliable solution is a must-have - ie that have proven through years they can be used and are stable enough for us to enjoy our week-ends :)</div><div><br></div><div>Razique</div><div>
<br></div><div><div><div>Le 18 avr. 2013 à 00:14, Paras pradhan <<a href="mailto:pradhanparas@gmail.com" target="_blank">pradhanparas@gmail.com</a>> a écrit :</div><br><blockquote type="cite"><div><div dir="ltr">
Thanks for the replies Razique. We are doing a test installation and looking for options for live migration. Looks like both cinder and shared file stirage are options. Among these two which one do you guys recommended considering the Cinder block will be typical lvm based commodity hardware.<div>
<br></div><div>Thanks</div><div>Paras.</div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div>On Wed, Apr 17, 2013 at 5:03 PM, Razique Mahroua <span dir="ltr"><<a href="mailto:razique.mahroua@gmail.com" target="_blank">razique.mahroua@gmail.com</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>Definitely, use the "--block_migrate" flag along the nova migrate command so you don't need a shared storage.</div>
<div><div>
You can boot from Cinder, depending on which version of OPS you run </div><div><br><div><div>
<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:'Lucida Grande';word-spacing:0px"><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">
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<br></div><div><div><div>Le 17 avr. 2013 à 23:55, Paras pradhan <<a href="mailto:pradhanparas@gmail.com" target="_blank">pradhanparas@gmail.com</a>> a écrit :</div><br><blockquote type="cite"><div><div dir="ltr">
Can we do live migration without using shared storage like glusterfs and using cinder to boot the volume from? <div><br></div><div>Sorry little off topic </div><div><br></div><div>Thanks</div><div>
Paras.</div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div>On Wed, Apr 17, 2013 at 4:53 PM, Razique Mahroua <span dir="ltr"><<a href="mailto:razique.mahroua@gmail.com" target="_blank">razique.mahroua@gmail.com</a>></span> wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>Many use either a proprietary backend or the good old LVM<div>
I'll go with Ceph for it since there is a native integration between cinder/ nova-volume and Ceph</div>
</div><div><br><div><div>
<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:'Lucida Grande';word-spacing:0px"><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">
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<br><div><div>Le 17 avr. 2013 à 23:49, Paras pradhan <<a href="mailto:pradhanparas@gmail.com" target="_blank">pradhanparas@gmail.com</a>> a écrit :</div><div><br><blockquote type="cite"><div dir="ltr">
What do people use for cinder?<div><br></div><div>Thanks</div><div>Paras.</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, Apr 17, 2013 at 4:41 PM, 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 was about to use CephFS (Bobtail) but the I can't resize the instances without having CephFS crashing.<div>
I'm currently considering GlusterFS which not only provides great performance, it's also pretty much easy to administer :)</div><div><br></div><div><div><div>Le 17 avr. 2013 à 22:07, JuanFra Rodriguez Cardoso <<a href="mailto:juanfra.rodriguez.cardoso@gmail.com" target="_blank">juanfra.rodriguez.cardoso@gmail.com</a>> a écrit :</div>
<div><br><blockquote type="cite"><div dir="ltr">Glance and Nova with MooseFS.<br>Reliable, good performance and easy configuration.<br><div class="gmail_extra"><br clear="all"><div><div>---</div>JuanFra</div>
<br><br><div class="gmail_quote">2013/4/17 Jacob Godin <span dir="ltr"><<a href="mailto:jacobgodin@gmail.com" target="_blank">jacobgodin@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Hi all,<div><br></div><div>Just a quick survey for all of you running distributed file systems for nova-compute instance storage. What are you running? Why are you using that particular file system?</div>
<div><br></div><div>We are currently running CephFS and chose it because we are already using Ceph for volume and image storage. It works great, except for snapshotting, where we see slow performance and high CPU load.</div>
<div><br></div></div>
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<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>
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_______________________________________________<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>
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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>
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</blockquote></div><br></div></div></div></div><div><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></div></div></blockquote></div><div><div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Lorin Hochstein<br><div>Lead Architect - Cloud Services</div><div>Nimbis Services, Inc.</div><div><a href="http://www.nimbisservices.com/" target="_blank">www.nimbisservices.com</a></div>
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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></div></div></blockquote></div><br></div>
</blockquote></div><br></div></div><br>_______________________________________________<br>
OpenStack-operators mailing list<br>
<a href="mailto:OpenStack-operators@lists.openstack.org">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><br clear="all"><div><br></div>-- <br>Joe Topjian<div>Systems Administrator</div><div>Cybera Inc.</div><div><br></div><div><a href="http://www.cybera.ca" target="_blank">www.cybera.ca</a></div>
<div><br></div><div><font color="#666666"><span>Cybera</span><span> is a not-for-profit organization that works to spur and support innovation, for the economic benefit of Alberta, through the use of cyberinfrastructure.</span></font></div>
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