---------- Forwarded message ---------- From: harryxiyou <harryxiyou@gmail.com> Date: 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@awcloud.com> Cc: Kazutaka Morita <morita.kazutaka@gmail.com>, openstack-dev@lists.launchpad.org, Liu Yuan <namei.unix@gmail.com>, sheepdog <sheepdog@lists.wpkg.org>, openstack <openstack@lists.launchpad.net>, Kang Hua <kanghua151@gmail.com> On Sat, Jan 19, 2013 at 10:57 AM, 张家龙 <zhangjl@awcloud.com> wrote:

Maybe，you need to modify the nova/virt/libvirt.xml.template.In our tesing of nova and sheepdog,

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