[cinder][ops] restricting the Ceph version used with Cinder

Tobias Urdin tobias.urdin at binero.com
Fri Nov 13 00:59:32 UTC 2020

Hello Brian,

Thanks for the information! Really appreciate that it’s communicated properly.

I have a question, I think it’s a little harsh to constraint deployments needing the same release for server and client when The Ceph project itself guarantees backward compatibility. What is the reasoning behind this and will Cinder upstream ensure that upgrade paths between Ceph releases are not broken?

Best regards 

> On 13 Nov 2020, at 01:00, Brian Rosmaita <rosmaita.fossdev at gmail.com> wrote:
> The Cinder project plans to take advantage of recent developments in Ceph to make some improvements to the RBD driver.  To do that, we propose restricting the Cinder-supported releases of Ceph to the active stable releases plus the two prior releases.
> This will make Mimic the minimum supported version of Ceph for the Wallaby and X releases of Cinder.
> This is explained in a bit more detail in a patch to the RBD driver documentation:
>    https://review.opendev.org/#/c/762592/
> If you have concerns about this proposal, please leave comments on the review.
> Thank you,
> brian

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