It supports iSCSI volumes which employ the use of LVM, http://docs.openstack.org/diablo/openstack-compute/admin/content/managing-volumes.html. 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, <disk type='block'> <driver name='qemu' type='raw'/> <source dev='/dev/mapper/nova--volumes-volume--0000000a'/> <target dev='/dev/vdb' bus='virtio'/> </disk> You can find the details in the code here, https://github.com/openstack/nova/blob/2011.3/nova/virt/libvirt/connection.py#L344 From: openstack-bounces+adrian_f_smith=dell.com at lists.launchpad.net [mailto:openstack-bounces+adrian_f_smith=dell.com at lists.launchpad.net] On Behalf Of Roman Sokolkov Sent: Wednesday, October 12, 2011 6:09 AM To: openstack at lists.launchpad.net Subject: Re: [Openstack] [OPENSTACK] Does diablo support lvm block devices instead files for VMs? Hi! Could someone answer for my question? 2011/10/7 Roman Sokolkov <rsokolkov at gmail.com<mailto:rsokolkov at gmail.com>> Hi! For my research I think Diablo doesn't support LVM block devices for VMs, does it? In /usr/share/nova/libvirt.xml.template only file supports for main disk device. I am right? #if $getVar('rescue', False) <disk type='file'> <driver type='${driver_type}'/> <source file='${basepath}/disk.rescue'/> <target dev='${disk_prefix}a' bus='${disk_bus}'/> </disk> <disk type='file'> <driver type='${driver_type}'/> <source file='${basepath}/disk'/> <target dev='${disk_prefix}b' bus='${disk_bus}'/> </disk> #else #if not ($getVar('ebs_root', False)) <disk type='file'> <driver type='${driver_type}'/> <source file='${basepath}/disk'/> <target dev='${root_device}' bus='${disk_bus}'/> </disk> #end if Thanks -- Regards, Roman Sokolkov -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20111012/e854cf59/attachment.html>