On Tue, 10 Nov 2015, [email protected] wrote:
> Hi all,
>
> Context:
> Firefly 0.80.9
> Ubuntu 14.04.1
> Almost a production platform in an openstack environment
> 176 OSD (SAS and SSD), 2 crushmap-oriented storage classes , 8 servers in 2
> rooms, 3 monitors on openstack controllers
> Usage: Rados Gateway for object service and RBD as back-end for Cinder and
> Glance
>
> The Ceph cluster was installed by Mirantis procedures
> (puppet/fuel/ceph-deploy):
>
> I noticed that tunables were curiously set.
> 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,
> "straw_calc_version": 1,
> "profile": "unknown",
> "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}
>
> I tried to update them
> ceph osd crush tunables optimal ==>
> adjusted tunables profile to optimal
>
> But when checking
> 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,
> "straw_calc_version": 1,
> "profile": "unknown",
> "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}
>
> Nothing has changed.
>
> I finally did
> ceph osd crush set-tunable straw_calc_version 0
You actually want straw_calc_version 1. This is just confusing output
from the 'firefly' tunable detection... the straw_calc_version does not
have any client dependencies.
sage
>
> and
> 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,
> "straw_calc_version": 0,
> "profile": "firefly",
> "optimal_tunables": 1,
> "legacy_tunables": 0,
> "require_feature_tunables": 1,
> "require_feature_tunables2": 1,
> "require_feature_tunables3": 1,
> "has_v2_rules": 0,
> "has_v3_rules": 0}
>
> It's OK
>
> My question:
> Does the "ceph osd crush tunables <profile>" command change all the requested
> parameters in order to set the tunables to the right profile?
>
> Brgds
>
> _________________________________________________________________________________________________________________________
>
> Ce message et ses pieces jointes peuvent contenir des informations
> confidentielles ou privilegiees et ne doivent donc
> pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu
> ce message par erreur, veuillez le signaler
> a l'expediteur et le detruire ainsi que les pieces jointes. Les messages
> electroniques etant susceptibles d'alteration,
> France Telecom - Orange decline toute responsabilite si ce message a ete
> altere, deforme ou falsifie. Merci
>
> This message and its attachments may contain confidential or privileged
> information that may be protected by law;
> they should not be distributed, used or copied without authorization.
> If you have received this email in error, please notify the sender and delete
> this message and its attachments.
> As emails may be altered, France Telecom - Orange shall not be liable if this
> message was modified, changed or falsified.
> Thank you.
>
> --
> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
>
--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
