<div dir="ltr">Hi Nguyễn,<div><br></div><div>Cinder does support configuring multiple storage backends where each backend runs under its own cinder-volume service.</div><div>Different deployments will have different ways to configure multiple backends and you can refer to their documentation.</div><div>You can configure a specific volume type for a particular backend and retype between the two backends if possible (there</div><div>are checks that won't allow it in certain conditions).</div><div>You can follow this[1] documentation for reference. Hope that helps.</div><div><br></div><div>[1] <a href="https://docs.openstack.org/cinder/latest/admin/multi-backend.html">https://docs.openstack.org/cinder/latest/admin/multi-backend.html</a></div><div><br></div><div>Thanks</div><div>Rajat Dhasmana</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Apr 2, 2023 at 11:31 AM Nguyễn Hữu Khôi <<a href="mailto:nguyenhuukhoinw@gmail.com">nguyenhuukhoinw@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">I ask becasuse I have no see docs which talked about.<div dir="auto">I will lab and update you.</div><div dir="auto">Many thanks for quick response. Have a nice weekend.</div><div dir="auto"><br></div><br><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Sun, Apr 2, 2023, 12:43 PM Dmitriy Rabotyagov <<a href="mailto:noonedeadpunk@gmail.com" rel="noreferrer" target="_blank">noonedeadpunk@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div>I don't see any reason why this won't be possible. Though, I would likely used different sets of cinder-volume services for that, as while Ceph does support active-active setup, I'm not sure your NAS driver does - it's worth checking your specific driver with this matrix:</div><div dir="auto"><a href="https://docs.openstack.org/cinder/latest/reference/support-matrix.html" rel="noreferrer noreferrer" target="_blank">https://docs.openstack.org/cinder/latest/reference/support-matrix.html</a></div><div dir="auto"><br></div><div dir="auto">Regarding changing volume types, I assume you mean basically volume retypes. It actually depends on the format of images that are stored on the backend, as cinder does not execute type conversion during retype. So if your NAS storage stores in RAW as Ceph does, this should work, I assume.<br><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">вс, 2 апр. 2023 г., 06:48 Nguyễn Hữu Khôi <<a href="mailto:nguyenhuukhoinw@gmail.com" rel="noreferrer noreferrer" target="_blank">nguyenhuukhoinw@gmail.com</a>>:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Hello.<div dir="auto">I have a question that could we use both SAN and Ceph for multi backend? If yes can we change volume type from SAN to Ceph and otherwise?</div><div dir="auto">Thanks.</div></div>
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