Re: [Ceph-qa] ceph-qa-suite branching (merge it into ceph.git?)

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On Wed, Apr 13, 2016 at 7:38 PM, Sage Weil <sweil@xxxxxxxxxx> wrote:
> On Wed, 13 Apr 2016, Samuel Just wrote:
>> It also doesn't seem like it would actually present a problem in any case.
>
> The reason we didn't do this before was because we wanted to revise tests
> independently of the thing being tested.  But as John points out,
> specifying a test branch should accomplish that, at least for testing.
>
> It might be nice to preserve the ability specify an alternate repo with
> totally out-of-tree tests.  Maybe that can be done with a simple reorg of
> the repo, like putting everything under qa/, so that tasks/ and suites/
> don't appear at the top level (of ceph.git or ceph-qa-suite.git).

Should be doable, teuthology will in any case still need to know how
to pull old-style separate-repo setups for when it is asked to
schedule a suite against a <= jewel branch.  Might be simplest to just
enable teuthology to have a suite path prefix in addition to its repo
address, so that you could tell it "get the suites from repo X in
/foo/bar" and avoid hardcoding it.  Then for older branches it would
be "github.com/ceph/ceph-qa-suite path /" and for newer stuff it would
be "github.com/ceph/ceph path /wherever"

John

> sage
>
>
>
>> -Sam
>>
>> On Wed, Apr 13, 2016 at 11:31 AM, John Spray <jspray@xxxxxxxxxx> wrote:
>> > On Wed, Apr 13, 2016 at 2:58 PM, Gregory Farnum <gfarnum@xxxxxxxxxx> wrote:
>> >> On Wed, Apr 13, 2016 at 6:23 AM, Loic Dachary <loic@xxxxxxxxxxx> wrote:
>> >>> +1 : I agree it would be a good thing.
>> >>>
>> >>> The reason why it would help to merge ceph-qa-suite in ceph is because we have no proper methods or tools to work with interdependent repositories. The problem is not unique to Ceph: every Free Software developer end up bug fixing and adding features to dependencies (ceph-qa-suite in the case of Ceph but also jerasure, rocksdb, s3test etc.). It will take a long time to resolve that more general problem and I don't know about an effort in that direction. Do you ?
>> >>>
>> >>> Cheers
>> >>>
>> >>> On 13/04/2016 12:52, John Spray wrote:
>> >>>> Lately, we've instances where ceph.git and ceph-qa-suite.git got
>> >>>> slightly out of sync, as we were adding new stuff and interface
>> >>>> changes to ceph (especially in cephfs).
>> >>>>
>> >>>> We used to have two repos (ceph and teuthology), now we have three
>> >>>> (ceph, ceph-qa-suite and teuthology).  Splitting tests out of
>> >>>> teuthology was a good thing, but maybe they should have gone into the
>> >>>> ceph tree instead of a new repo?  The ceph-qa-suite branching seems to
>> >>>> pretty much mirror what we do with ceph, with master vs jewel etc.
>> >>>>
>> >>>> Historically we had a comparatively static set of workloads in the qa
>> >>>> suite (e.g. kernel-untar-build, fsstresss, pjd), which didn't change
>> >>>> much with ceph changes.  But these days we're adding much more
>> >>>> detailed tests, so there's more effort to keep the two in sync.
>> >>>>
>> >>>> I would personally love to be able to have a single PR that contained
>> >>>> my code and the tests for it.  What if after Jewel we pulled all of
>> >>>> ceph-qa-suite into the ceph repo?
>> >>>>
>> >>>> We could still enable folks running test changes without having to
>> >>>> rebuild ceph packages: the suite sha1 selected when running a
>> >>>> teuthology suite could still be different from that used for
>> >>>> installing ceph, it's just that it would fetch that sha1 from the ceph
>> >>>> repo instead of from a separate repo.
>> >>
>> >> We do have qa-suite tests that don't necessarily make a lot of sense
>> >> to have in ceph.git. Samba, kernel NFS, ganesha some day. That doesn't
>> >> mean we shouldn't merge them, but it popped into my head.
>> >
>> > Fair point.  I think that because those other tasks depend in turn on
>> > the ceph tasks, we still ultimately benefit from having them in one
>> > place.
>> >
>> > It's also possible that in the long run things like the samba tests
>> > become a bit more "smart" in a way that's more tightly coupled to
>> > ceph, e.g. checking the resulting state inside ceph after doing things
>> > in the samba/ganesha layer, at which point we'd enjoy having them in
>> > the same place as the main body of test code.
>> >
>> > John
>> > --
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