Crushmap (tunables) flapping on cluster

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Hi list,


I'm running a cluster which is currently in migration from hammer to jewel.


Actually i have the problem, that the tunables are flapping and a map of an rbd image is not working.


It is flapping between:


{
    "choose_local_tries": 0,
    "choose_local_fallback_tries": 0,
    "choose_total_tries": 50,
    "chooseleaf_descend_once": 1,
    "chooseleaf_vary_r": 1,
    "chooseleaf_stable": 0,
    "straw_calc_version": 1,
    "allowed_bucket_algs": 54,
    "profile": "hammer",
    "optimal_tunables": 0,
    "legacy_tunables": 0,
    "minimum_required_version": "hammer",
    "require_feature_tunables": 1,
    "require_feature_tunables2": 1,
    "has_v2_rules": 0,
    "require_feature_tunables3": 1,
    "has_v3_rules": 0,
    "has_v4_buckets": 1,
    "require_feature_tunables5": 0,
    "has_v5_rules": 0
}

and

{
    "choose_local_tries": 0,
    "choose_local_fallback_tries": 0,
    "choose_total_tries": 50,
    "chooseleaf_descend_once": 1,
    "chooseleaf_vary_r": 1,
    "straw_calc_version": 1,
    "allowed_bucket_algs": 54,
    "profile": "hammer",
    "optimal_tunables": 0,
    "legacy_tunables": 0,
    "require_feature_tunables": 1,
    "require_feature_tunables2": 1,
    "require_feature_tunables3": 1,
    "has_v2_rules": 0,
    "has_v3_rules": 0,
    "has_v4_buckets": 1
}

Did someone have that problem too?

How can it be solved?


Regards,

Steve




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