<div dir="ltr">Update it seems the Cinder BlockDeviceDriver may be better: <a href="https://wiki.openstack.org/wiki/BlockDeviceDriver">https://wiki.openstack.org/wiki/BlockDeviceDriver</a><div><br></div><div>Related article by somebody else: <a href="http://cloudgeekz.com/71/how-to-setup-openstack-to-use-local-disks-for-instances.html">http://cloudgeekz.com/71/how-to-setup-openstack-to-use-local-disks-for-instances.html</a></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, May 10, 2015 at 2:14 PM, Sam Stoelinga <span dir="ltr"><<a href="mailto:sammiestoel@gmail.com" target="_blank">sammiestoel@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">I am experimenting with an approach. My current plan is to run Cinder LVM on the compute node and attach block device of the local cinder LVM backend directly to the VM. <div>The cinder LVM backend would be a VG span across JBOD disks.<br><div><br></div><div>Anybody ever tried this? Are there any special directive required so that Cinder-scheduler knows that the local Cinder LVM backend should be used?</div></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Sun, May 10, 2015 at 10:51 AM, Jagat Singh <span dir="ltr"><<a href="mailto:jagatsingh@gmail.com" target="_blank">jagatsingh@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px">We are running Hadoop on Openstack. But have disks configured as RAID5. We get terrible disk throughput.</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px">How do we do openstack disk configuration for JBOD in the way Hadoop likes.</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px">We are running Cisco UCS device , each server has 32 cores and 10 disks but on Openstack Hadoop layer in datanode each disk appears as one at this moment.</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px">Is there any documentation or best practices around configuring Openstack for Hadoop. I know there is Savana project but that does not shares how to do things at physical level.</p><p style="margin:0px 0px 1em;padding:0px;border:0px;font-size:15px;clear:both;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;line-height:19.5px">Thanks</p></div>
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