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Hi folks,

So I was having some back and forth internally about is cinder ready for 
usage and wanted to get other operators thoughts on how there cinder 
experiences have been going, any trials and tribulations.

For context, we are running on liberty (yes I know, working on getting 
that to newer versions) and folks in godaddy are starting to use more 
and more cinder (backed by ceph) and that got me thinking about asking 
the question from operators (and devs) on what kind of readiness 
'rating' (or whatever you would want to call it) would people give 
cinder in liberty.

Some things that I was thinking was around concurrency rates, because I 
know that's be a common issue that the cinder developers have been 
working through (using tooz, and various other lock mechanisms and such).

Have other cinder operators seen concurrent operations (or conflicting 
operations or ...) work better in newer releases (is there any metric/s 
anyone has gathered about how things have gotten worse/better under 
scale for cinder in various releases? partically with regard to using ceph).

Thoughts?

It'd be interesting to capture (not just for my own usage) I think 
because such info helps the overall user and operator and dev community 
(and yes I would expect various etherpads to have parts of this 
information, but it'd be nice to have like a single place where other 
operators can specify how ready they believe a project is for a given 
release and for a given configuration; and ideally provide 
details/comments as to why they believe this).

-Josh