On Tue, Oct 25, 2016 at 3:10 PM, Steve Taylor <[email protected] > wrote:
> Recently we tested an upgrade from 0.94.7 to 10.2.3 and found exactly the > opposite. Upgrading the clients first worked for many operations, but we > got "function not implemented" errors when we would try to clone RBD > snapshots. > Yes, we have seen “function not implemented” in the past as well when connecting new clients to old clusters. > you must keep your CRUSH tunables at firefly or hammer until the clients > are upgraded. > Not that I am proposing to try it, but… or else what? Whatever the “or else!” is, the same would apply, I assume, to connecting old clients to a brand-new jewel cluster which would have been created with jewel tunables in the first place? Thanks!
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