---------- Forwarded message ---------- From: harryxiyou <harryxiyou(a)gmail.comDate: Sat, Jan 19, 2013 at 11:49 AM Subject: Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for OpenstackCinder like Sheepdog volumes To: 张家龙 <zhangjl(a)awcloud.comCc: Kazutaka Morita <morita.kazutaka(a)gmail.com&gt;, openstack-dev(a)lists.launchpad.org, Liu Yuan <namei.unix(a)gmail.com&gt;, sheepdog <sheepdog(a)lists.wpkg.org&gt;, openstack <openstack(a)lists.launchpad.net&gt;, Kang Hua <kanghua151(a)gmail.com On Sat, Jan 19, 2013 at 10:57 AM, 张家龙 <zhangjl(a)awcloud.com&gt; wrote: Hi Zhang jia long, What are the functions of libvirt.xml.template? Currently, we just wanna to add a new block driver(a new one as the same as sheepdog driver) to Openstack Cinder ;-) The performances will be enhenced later. [...] > Hi Morita and other developers, > If i add a QEMU/Libvirt driver(the same as Sheepdog volumes driver in > Openstack Cinder branch) to let Openstack Cinder support a new block-level > storage system, I should change following stuffs, right? > 1, Add a driver file to the dir in Openstack Cinder branch(the same as > sheepdog.py), > https://github.com/openstack/cinder/blob/master/cinder/volume/drivers > 2, Change the file in Openstack Nova branch(Let libvirt attach HLFS volumes > to QEMU, the same as sheepdog)， > https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py > Do I should change/add any other files for Openstack? Cloud anyone give me > some suggestions? Thanks in advance ;-) Hi Openstack developers, libvirt developers and Sheepdog developers, I also have following questions, please give me some suggestions. Thanks in advance ;-) 1, The libvirt codes in Nova branch are just interfaces which call the standard Libvirt library, right? (Or the libvirt codes in Nova branch are the standard Libvirt library.) 2, If i add a new block storage driver for Openstack by QEMU/Libvirt way, should i also modify standard libvirt library and QEMU source codes to let them support this new driver so that i can use this new driver to let libvirt attach the new driver volumes to QEMU in Openstack? 3, Certainly, i should also do following stuffs. a, Add a driver file to the dir in Openstack Cinder branch(the same as sheepdog.py), https://github.com/openstack/cinder/blob/master/cinder/volume/drivers b, Change the file in Openstack Nova branch(Let libvirt attach the new driver volumes to QEMU, the same as sheepdog)， https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py 4, Should i have to do any other stuffs? -- Thanks Harry Wei -- Thanks Harry Wei