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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>It supports iSCSI volumes which employ the use of LVM, <a href="http://docs.openstack.org/diablo/openstack-compute/admin/content/managing-volumes.html">http://docs.openstack.org/diablo/openstack-compute/admin/content/managing-volumes.html</a>.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The template file you reference is not the full picture. When you mount a volume a new snippet of XML is generated and passed to libvirt. The XML would look something like this,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><disk type='block'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> <driver name='qemu' type='raw'/><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><source dev='/dev/mapper/nova--volumes-volume--0000000a'/><o:p></o:p></span></p><p class=MsoNormal><span lang=FR style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><target dev='/dev/vdb' bus='virtio'/><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </disk><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>You can find the details in the code here, https://github.com/openstack/nova/blob/2011.3/nova/virt/libvirt/connection.py#L344<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> openstack-bounces+adrian_f_smith=dell.com@lists.launchpad.net [mailto:openstack-bounces+adrian_f_smith=dell.com@lists.launchpad.net] <b>On Behalf Of </b>Roman Sokolkov<br><b>Sent:</b> Wednesday, October 12, 2011 6:09 AM<br><b>To:</b> openstack@lists.launchpad.net<br><b>Subject:</b> Re: [Openstack] [OPENSTACK] Does diablo support lvm block devices instead files for VMs?<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi!<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Could someone answer for my question?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>2011/10/7 Roman Sokolkov <<a href="mailto:rsokolkov@gmail.com">rsokolkov@gmail.com</a>><o:p></o:p></p><p class=MsoNormal>Hi! For my research I think Diablo doesn't support LVM block devices for VMs, does it? <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>In /usr/share/nova/libvirt.xml.template only file supports for main disk device. I am right? <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal> #if $getVar('rescue', False)<o:p></o:p></p></div><div><p class=MsoNormal> <disk type='file'><o:p></o:p></p></div><div><p class=MsoNormal> <driver type='${driver_type}'/><o:p></o:p></p></div><div><p class=MsoNormal> <source file='${basepath}/disk.rescue'/><o:p></o:p></p></div><div><p class=MsoNormal> <target dev='${disk_prefix}a' bus='${disk_bus}'/><o:p></o:p></p></div><div><p class=MsoNormal> </disk><o:p></o:p></p></div><div><p class=MsoNormal> <disk type='file'><o:p></o:p></p></div><div><p class=MsoNormal> <driver type='${driver_type}'/><o:p></o:p></p></div><div><p class=MsoNormal> <source file='${basepath}/disk'/><o:p></o:p></p></div><div><p class=MsoNormal> <target dev='${disk_prefix}b' bus='${disk_bus}'/><o:p></o:p></p></div><div><p class=MsoNormal> </disk><o:p></o:p></p></div><div><p class=MsoNormal> #else<o:p></o:p></p></div><div><p class=MsoNormal> #if not ($getVar('ebs_root', False))<o:p></o:p></p></div><div><p class=MsoNormal> <disk type='file'><o:p></o:p></p></div><div><p class=MsoNormal> <driver type='${driver_type}'/><o:p></o:p></p></div><div><p class=MsoNormal> <source file='${basepath}/disk'/><o:p></o:p></p></div><div><p class=MsoNormal> <target dev='${root_device}' bus='${disk_bus}'/><o:p></o:p></p></div><div><p class=MsoNormal> </disk><o:p></o:p></p></div><div><p class=MsoNormal> #end if<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thanks<o:p></o:p></p></div></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <br>Regards, Roman Sokolkov<o:p></o:p></p></div></body></html>