Hello,
> Try to work with the tunables:
>
> $ *ceph osd crush show-tunables*
> {
> "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": "firefly",
> "require_feature_tunables": 1,
> "require_feature_tunables2": 1,
> "has_v2_rules": 0,
> "require_feature_tunables3": 1,
> "has_v3_rules": 0,
> "has_v4_buckets": 0,
> "require_feature_tunables5": 0,
> "has_v5_rules": 0
> }
>
> try to 'disable' the '*require_feature_tunables5*', with that I think you should be ok, maybe there's another way, but that works for me. One
> way to change it, is to comment out in the crushmap the option "*tunable chooseleaf_stable 1*" and inject the crushmap again in the cluster (of
> course that would produce on a lot of data moving on the pgs)
Thanks a lot, I removed the line "tunable chooseleaf_stable 1" from the crushmap and it works now !
root@iccluster013:~# df -h /mnt/
Filesystem Size Used Avail Use% Mounted on
10.90.38.17,10.90.38.18,10.90.39.5:/ 66T 19G 66T 1% /mnt
Best regards,
--
Yoann Moulin
EPFL IC-IT
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