Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for Openstack Cinder like Sheepdog volumes
At Sat, 19 Jan 2013 13:14:42 +0800, harryxiyou wrote: On Sat, Jan 19, 2013 at 12:24 PM, MORITA Kazutaka morita.kazut...@gmail.com wrote: At Fri, 18 Jan 2013 22:56:38 +0800, [...] The answer depends on the protocol between QEMU and HLFS. What is used for accessing HLFS volumes from QEMU? Is it iSCSI, NFS, or something else? Actually, we just realize the block driver interfaces QEMU provided. You can see our patch from http://code.google.com/p/cloudxy/source/browse/trunk/hlfs/patches/hlfs_driver_for_qemu.patch And what about Sheepdog? What is used for accessing Sheepdog volumes from QEMU? Is it iSCSI, NFS, or something else? Sheepdog uses an own protocol, and I think your file system is similar. IIUC, what you need to do are: 1. modify libvirt so that you can specify your file system as a QEMU disk 2. add a volume driver to Cinder to handle your file system You don't need to modify Nova. You can use nova.virt.libvirt.volume.LibvirtNetVolumeDriver as a libvirt volume driver like sheepdog and rbd. Thanks, Kazutaka ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for Openstack Cinder like Sheepdog volumes
On Sat, Jan 19, 2013 at 5:27 PM, MORITA Kazutaka morita.kazut...@gmail.com wrote: At Sat, 19 Jan 2013 13:14:42 +0800, harryxiyou wrote: [...] Sheepdog uses an own protocol, and I think your file system is similar. IIUC, what you need to do are: 1. modify libvirt so that you can specify your file system as a QEMU disk 2. add a volume driver to Cinder to handle your file system You don't need to modify Nova. You can use nova.virt.libvirt.volume.LibvirtNetVolumeDriver as a libvirt volume driver like sheepdog and rbd. I have the same thoughts. Morita, thanks for your help. You can also see another emali i sent to you a moment ago named Add a new block storage driver by Libvirt/Qemu way for Openstack, which says how to add a new block storage for Openstack in details. I hope you can review that one and give me your suggestions if you have free time. Thanks in advance ;-) -- Thanks Harry Wei ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for Openstack Cinder like Sheepdog volumes
Until the QEMU support is official, I don't think it's a good idea to have HLFS driver in Cinder. On Sat, Jan 19, 2013 at 1:14 PM, harryxiyou harryxi...@gmail.com wrote: On Sat, Jan 19, 2013 at 12:24 PM, MORITA Kazutaka morita.kazut...@gmail.com wrote: At Fri, 18 Jan 2013 22:56:38 +0800, [...] The answer depends on the protocol between QEMU and HLFS. What is used for accessing HLFS volumes from QEMU? Is it iSCSI, NFS, or something else? Actually, we just realize the block driver interfaces QEMU provided. You can see our patch from http://code.google.com/p/cloudxy/source/browse/trunk/hlfs/patches/hlfs_driver_for_qemu.patch And what about Sheepdog? What is used for accessing Sheepdog volumes from QEMU? Is it iSCSI, NFS, or something else? -- Thanks Harry Wei ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp -- Regards Huang Zhiteng ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for Openstack Cinder like Sheepdog volumes
On Sat, Jan 19, 2013 at 7:00 PM, Huang Zhiteng winsto...@gmail.com wrote: Until the QEMU support is official, I don't think it's a good idea to have HLFS driver in Cinder. It sounds reasonable, we will send our patches to QEMULibvirt community. After the patches are merged, we will send patch to Openstack. Do you have any other suggestions? -- Thanks Harry Wei ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for Openstack Cinder like Sheepdog volumes
It seems you also have tgt patch for HLFS, personally I'd prefer iSCSI support over qEMU support since iSCSI is well supported by almost every hypervisor. On Jan 19, 2013 9:23 PM, harryxiyou harryxi...@gmail.com wrote: On Sat, Jan 19, 2013 at 7:00 PM, Huang Zhiteng winsto...@gmail.com wrote: Until the QEMU support is official, I don't think it's a good idea to have HLFS driver in Cinder. It sounds reasonable, we will send our patches to QEMULibvirt community. After the patches are merged, we will send patch to Openstack. Do you have any other suggestions? -- Thanks Harry Wei ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for Openstack Cinder like Sheepdog volumes
On Sat, Jan 19, 2013 at 10:09 PM, Huang Zhiteng winsto...@gmail.com wrote: It seems you also have tgt patch for HLFS, personally I'd prefer iSCSI support over qEMU support since iSCSI is well supported by almost every hypervisor. We will first realize HLFS driver by Qemu/Libvirt way for Openstack. Then, we will also realize iSCSI way. Thanks for your suggestions ;-) -- Thanks Harry Wei ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
[Openstack] [Openstack-dev][Sheepdog]Add a new driver for Openstack Cinder like Sheepdog volumes
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 ;-) -- Thanks Harry Wei ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for Openstack Cinder like Sheepdog volumes
At Fri, 18 Jan 2013 22:56:38 +0800, harryxiyou wrote: 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 ;-) The answer depends on the protocol between QEMU and HLFS. What is used for accessing HLFS volumes from QEMU? Is it iSCSI, NFS, or something else? Thanks, Kazutaka ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
Re: [Openstack] [Openstack-dev][Sheepdog]Add a new driver for Openstack Cinder like Sheepdog volumes
On Sat, Jan 19, 2013 at 12:24 PM, MORITA Kazutaka morita.kazut...@gmail.com wrote: At Fri, 18 Jan 2013 22:56:38 +0800, [...] The answer depends on the protocol between QEMU and HLFS. What is used for accessing HLFS volumes from QEMU? Is it iSCSI, NFS, or something else? Actually, we just realize the block driver interfaces QEMU provided. You can see our patch from http://code.google.com/p/cloudxy/source/browse/trunk/hlfs/patches/hlfs_driver_for_qemu.patch And what about Sheepdog? What is used for accessing Sheepdog volumes from QEMU? Is it iSCSI, NFS, or something else? -- Thanks Harry Wei ___ Mailing list: https://launchpad.net/~openstack Post to : openstack@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
