Re: How to see which crush tunables are active in a ceph-cluster?

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Hi,
to answer myself.

With ceph osd crush show-tunables I see a little bit more, but doesn't
know how far away from firefly-tunables I'm at the procuction cluster are.

New testcluster with profile optimal:
ceph osd crush show-tunables
{ "choose_local_tries": 0,
  "choose_local_fallback_tries": 0,
  "choose_total_tries": 50,
  "chooseleaf_descend_once": 1,
  "profile": "firefly",
  "optimal_tunables": 1,
  "legacy_tunables": 0,
  "require_feature_tunables": 1,
  "require_feature_tunables2": 1}

the production cluster:
 ceph osd crush show-tunables
{ "choose_local_tries": 0,
  "choose_local_fallback_tries": 0,
  "choose_total_tries": 50,
  "chooseleaf_descend_once": 0,
  "profile": "unknown",
  "optimal_tunables": 0,
  "legacy_tunables": 0,
  "require_feature_tunables": 1,
  "require_feature_tunables2": 0}

Look this like argonaut or bobtail?

And how proceed to update?
Does in makes sense first go to profile bobtail and then to firefly?


Regards

Udo

Am 01.12.2014 17:39, schrieb Udo Lembke:
> Hi all,
> http://ceph.com/docs/master/rados/operations/crush-map/#crush-tunables
> described how to set the tunables to legacy, argonaut, bobtail, firefly
> or optimal.
> 
> But how can I see, which profile is active in an ceph-cluster?
> 
> With "ceph osd getcrushmap" I got not realy much info
> (only "tunable choose_local_tries 0
> tunable choose_local_fallback_tries 0
> tunable choose_total_tries 50)
> 
> 
> Udo
> 
> _
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