Re: [Rdo-list] cinder retype and QoS

On 19 Nov 2014, at 11:33, Kashyap Chamarthy <kchamart(a)redhat.com&gt; wrote: > On Wed, Nov 19, 2014 at 09:59:46AM +0000, Arne Wiebalck wrote: >> Hi, >> >>> From what I see, "cinder retype” does not work with different QoS >>> types yet, correct? > > I'm not a Cinder expert, but looking at the change[1] that introduced > the Cinder volume retype functionality, at end of the commit message, it > says: > > [. . .] > This version will cause retype operations to fail if the current and > new volume types have different: > 1. QoS settings that are enforced by the front-end for in-use volumes. > 2. encryption settings. > > Not sure if that (point 1 there) answers your question. > > > [1] https://review.openstack.org/#/c/44881/ -- Add ability to modify > volume type Thanks. I saw that change. This and packstack tells me it does not work, at least for a Ceph based backend :)

Also the Cinder code (retype being empty in driver.py and not being overwritten rbd.py points) in that direction. http://redhatstackblog.redhat.com/2014/04/15/whats-new-in-icehouse-storage/ gives a slightly different impression IMHO.