Re: client/cluster compatibility testing

[Josh Durgin <jdurgin@redhat.com>]

On 04/16/2015 09:42 AM, Sage Weil wrote:
> I think the simplest way to address this is to talk about compatibility in
> terms of the upstream stable releases (firefly, hammer, etc.), and test
> that compatibility with teuthology tests from ceph-qa-suite.git.  We have
> some basic inter-version client/cluster tests already in
> suites/upgrade/client-upgrade.  Currently these test new (version "x")
> clients against a given release (dumpling, firefly).  I think we just need
> to add hammer to that mix, and then add a second set of tests that do the
> reverse: test clients from a given release (dumpling, firefly, hammer)
> against an arbitrary cluster version ("x").

The suites in suites/upgrade/$version-x do this, and use a mixed
version cluster rather than a purely version x cluster. It seems like
people would want that intra-cluster version coverage for smooth
upgrades.

Just need to add hammer-x there too (Yuri's renaming the client ones to
be $version-client-x for less confusion).

Also I think we'll want to start doing mixed-client-version tests,
particularly for things like rbd's exclusive locking:

http://tracker.ceph.com/issues/11405

Josh